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cui .com date 10/10/2012 page 1 of 36 series : nqb description : fully regulated advanced bus converters features ? industry standard quarter-brick with digital pmbus interface 57.9 x 36.8 x 11.3 mm (2.28 x 1.45 x 0.445 in) ? optional industry standard 5-pins for intermediate bus architectures ? industry-leading power density for telecom and datacom 127~141w / sq. in ? cui dc/dc energy optimizer built-in ? high efficiency, typ. 96.4% at half load, 12 vout ? fully regulated advanced bus converter from 36~75vin ? 2,250 vdc input to output isolation ? fast feed forward regulation to manage line transients ? optional baseplate for high temperature applications ? droop load sharing with 10% current share accuracy ? pmbus revision 1.2 compliant ? 2.9 million hours mtbf ? iso 9001/14001 certified supplier ? ericsson bmr456 compatible model input voltage output voltage output current output wattage (vdc) (vdc) max (a) max (w) nqb-420[d,n] wa-an 36~75 12 35 420 nqb-468[d,n]ma-an 40~60 12 39 468 nqb-415[d,n]wb-an 36~75 12.45 35 415 nqb-462[d,n]mb-an 40~60 12.45 39 462 general characteristics ? configurable soft start/stop ? precision delay and ramp-up ? voltage margining ? voltage/current/temperature monitoring ? configurable output voltage ? configurable fault response ? power good www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 2 of 36 cui inc model : nqb description : fully regulated advanced bus converters part number key nqb- xxx x x x - x x x x - xxx - es x input voltage range: w = wide (36~75 v) m = medium (40~60 v) firmware con guration: 000~zzz base number design output power: 1~999 example part number: nqb-420dwa-an-001 420 w output power, digital pins wide input voltage range, 12.0 v output 5.33 mm pins, negative enable logic rmware revision 001 digital interface: d = digital pins n = no digital pins nominal output voltage: a = 12.0 v b = 12.45 v load sharing function: d = vout droop pin description: a = 5.33 mm (0.210 in.) b = 4.57 mm (0.180 in.) c = 3.69 mm (0.145 in.) d = 2.79 mm (0.110 in.) s = smt enable logic sense: n = negative logic p = positive logic heatsink option: "blank" = open frame h = heatsink at l = heatsink lateral ns t = heatsink transverse ns g = heatsink with gnd pin engineering sample: es engineering phase: a~z packaging: 20 converters(through hole pin)/tray, pe foam dissipative 20 converters(surface mount pin)/tray, antistatic ppe contents part number key........................................................2 general information...................................................3 safety speci cation....................................................3 absolute maximum ratings..........................................4 emc speci cation.........................................20 operating information...................................21 thermal consideration..................................24 connections............................................25 pmbus interface...........................................26 mechanical information.................................29 soldering information...................................32 delivery package information.........................33 product quali cation speci cation...................35 electrical speci cation: 12 v, 35 a, 420 w, 36~75 vin; nqb-420[d,b] wa-an......6 12 v, 39 a, 468 w, 40~60 vin; nqb-468[d,b]ma-an....10 12.45 v, 35 a, 415 w, 36~75 vin; nqb-415[d,b]wb-an....14 12.45 v, 39 a, 462 w, 40~60 vin; nqb-420[d,b]mb-an....19 www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 3 of 36 cui inc model : nqb description : fully regulated advanced bus converters general information reliability the failure rate ( ) and mean time between failures (mtbf= 1/ ) is calculated at max output power and an operating ambient temperature (t a ) of +40c. cui power modules uses telcordia sr-332 issue 2 method 1 to calculate the mean steady-state failure rate and standard deviation ( ). telcordia sr-332 issue 2 also provides techniques to estimate the upper confidence levels of failure rates based on the mean and standard deviation. mean steady-state failure rate, std. deviation, 425 nfailures/h 60.9 nfailures/h mtbf (mean value) for the nqb series = 2.9 mh. mtbf at 90% confidence level = 2.4 mh compatibility with rohs requirements the products are compatible with the relevant clauses and requirements of the rohs directive 2011/65/eu and have a maximum concentration value of 0.1% by weight in homogeneous materials for lead, mercury, hexavalent chromium, pbb and pbde and of 0.01% by weight in homogeneous materials for cadmium. exemptions in the rohs directive utilized in cui power modules products are found in the statement of compliance document. safety specification general information cui power modules dc/dc converters and dc/dc regulators are designed in accordance with the safety standards iec 60950-1, en 60950-1 and ul 60950-1 safety of information technology equipment . iec/en/ul 60950-1 contains requirements to prevent injury or damage due to the following hazards: ? electrical shock ? energy hazards ? fire ? mechanical and heat hazards ? radiation hazards ? chemical hazards on-board dc/dc converters and dc/dc regulators are defined as component power supplies. as components they cannot fully comply with t he provisions of any safety requirements without conditions of acceptability. clearance between conductors and between conductive parts of the component power supply and conductors on the board in the final product must meet the applicable safety requirements. certain conditions of acceptability apply for component power supplies with limited stand-off (see mechanical information for further information). it is the responsibility of the installer to ensure that the final product housing these components complies with the requirements of all applicable safety standards and regulations for the final product. component power supplies for general use should comply with the requirements in iec/en/ul 60950-1 safety of information technology equipment. product related standards, e.g. ieee 802.3af power over ethernet , and ets-300132-2 power interface at the input to telecom equipment, operated by direct current (dc) are based on iec/en/ul 60950-1 with regards to safety. cui power modules dc/dc converters and dc/dc regulators are ul 60950-1 recognized and certified in accordance with en 60950-1. the flammability rating for all construction parts of the products meet requirements for v-0 class material according to iec 60695-11-10, fire hazard testing, test flames C 50 w horizontal and vertical flame test methods. isolated dc/dc converters galvanic isolation between input and output is verified in an electric strength test and the isolation voltage (v iso ) meets the voltage strength requirement for basic insulation according to iec/en/ul 60950-1. it is recommended to use a slow blow fuse at the input of each dc/dc converter. if an input filter is used in the circuit the fuse should be placed in front of the input filter. in the rare event of a component problem that imposes a short circuit on the input source, this fuse will provide the following functions: ? isolate the fault from the input power source so as not to affect the operation of other parts of the system ? protect the distribution wiring from excessive current and power loss thus preventing hazardous overheating the dc/dc converter output is considered as safety extra low voltage (selv) if one of the following conditions is met: ? the input source has double or reinforced insulation from the ac mains according to iec/en/ul 60950-1 ? the input source has basic or supplementary insulation from the ac mains and the input of the dc/dc converter is maximum 60 vdc and connected to protective earth according to iec/en/ul 60950-1 ? the input source has basic or supplementary insulation from the ac mains and the dc/dc converter output is connected to protective earth according to iec/en/ul 60950-1 non - isolated dc/dc regulators the dc/dc regulator output is selv if the input source meets the requirements for selv circuits according to iec/en/ul 60950-1. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 4 of 36 cui inc model : nqb description : fully regulated advanced bus converters absolute maximum ratings characteristics min typ max unit t p1 c 5 2 1 + 0 4 - ) n o i t c e s n o i t a r e d i s n o c l a m r e h t e e s ( e r u t a r e p m e t g n i t a r e p o t s c 5 2 1 + 5 5 - e r u t a r e p m e t e g a r o t s v i input voltage -0.5 +80 +65* v v iso c d v 0 5 2 2 1 e t o n e e s , ) e g a t l o v t s e t t u p t u o o t t u p n i ( e g a t l o v n o i t a l o s i v tr input voltage transient according to etsi en 300 132-2 and telcordia gr-1089- core +100 +80* v v rc v 8 1 3 . 0 - e g a t l o v n i p l o r t n o c e t o m e r v v 6 . 3 3 . 0 - 1 a s , 0 a s , a d s , l c s , l r t c , t r e l a s o / i c i g o l stress in excess of absolute maximum ratings may cause permanent damage. absolute maximum ratings, sometimes referred to as no destruction limits, are normally tested with one parameter at a time exceeding the limits of output data or electrical characteristics. if exposed to s tress above these limits, function and performance may degrade in an unspecified manner. note 1: isolation voltage (input/output to base-plate) max 750 vdc. *) apply for the narrow input version v i = 40-60 v fundamental circuit diagram -in +in +out -out driver driver control rc isolation auxillary supply rc www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 5 of 36 cui inc model : nqb description : fully regulated advanced bus converters functional description t p1 , t p3 = -40 to +90oc, v i = 36 to 75 v, sense pins connected to output pins unless otherwise specified under conditions. typical values given at: t p1 , t p3 = +25c, v i = 53 v, max i o , unless otherwise specified under conditions configuration file: 190 10-cda 102 0314/001 characteristics conditions min typ max unit pmbus monitoring accuracy % 2 2 . 0 2 - e g a t l o v t u p n i d a e r _ n i v vout_read output voltage v i % 0 . 1 1 . 0 0 . 1 - v 3 5 = iout_read output current v i = 53 v, 50-100% of max i o -6 0.15 6 % iout_read output current v i = 53 v, 10% of max i o -0.6 - 0.6 a 5 5 . 3 5 - e r u t a r e p m e t d a e r _ p m e t oc fault protection characteristics input under voltage lockout, uvlo v - 3 3 - t l u a f e d y r o t c a f % 2 - 2 - y c a r u c c a t n i o p t e s hysteresis v - 2 - t l u a f e d y r o t c a f configurable via pmbus of threshold range, note 1 0 - - v s - 0 0 3 - y a l e d (output voltage) over/under voltage protection, ovp/uvp vout_uv_fault_limit v - 0 - t l u a f e d y r o t c a f configurable via pmbus, note 1 0 - 16 v vout_ov_fault_limit v - 6 . 5 1 - t l u a f e d y r o t c a f configurable via pmbus, note 1 v out - 16 v s - 0 0 2 - e m i t e s n o p s e r t l u a f over current protection, ocp % 6 6 - o i y c a r u c c a t n i o p t e s iout_oc_fault_limit - 1 4 - t l u a f e d y r o t c a f a configurable via pmbus, note 1 0 - 100 s - 0 0 2 - e m i t e s n o p s e r t l u a f over temperature protection, otp otp_fault_limit - 5 2 1 - t l u a f e d y r o t c a f c configurable via pmbus, note 1 -50 125 otp hysteresis 0 1 t l u a f e d y r o t c a f configurable via pmbus, note 1 0 125 s - 0 0 3 - e m i t e s n o p s e r t l u a f logic input/output characteristics logic input low (v il ) ctrl, sa0, sa1, pg, scl, sda, - - 1.1 v logic input high (v ih v - - 1 . 2 ) logic output low (v ol ) ctrl, pg, salert, scl, sda i ol = 6 ma - - 0.25 v logic output high (v oh ) ctrl, pg, salert, scl, sda i oh = -6 ma 2.7 - - v s - 3 . 1 2 e t o n ) f u b ( t e m i t e e r f s u b note 1: see operating information section. note 2: pmbus timing parameters according to pmbus spec. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 6 of 36 cui inc model : nqb description : fully regulated advanced bus converters 12.0 v, 35 a / 420 w electrical specification t p1 , t p3 = -40 to +90oc, v i = 36 to 75 v, sense pins connected to output pins unless otherwise specified under conditions. typical values given at: t p1 , t p3 = +25c, v i = 53 v, max i o , unless otherwise specified under conditions. additional c out = 3.5 mf, configuration file: 19010-cda 102 0314/001 characteristics conditions min typ max unit v i v 5 7 6 3 e g n a r e g a t l o v t u p n i v ioff turn-off input voltage decreasing input voltage 32 33 34 v v ion turn-on input voltage increasing input voltage 34 35 36 v c i 8 1 e c n a t i c a p a c t u p n i l a n r e t n i f p o w 0 2 4 0 r e w o p t u p t u o efficiency 50% of max i o 2 . 6 9 % max i o 5 . 5 9 50% of max i o , v i = 48 v 96.4 max i o , v i 5 . 5 9 v 8 4 = p d power dissipation max i o w 5 . 9 2 8 . 9 1 p li input idling power i o = 0 a, v i w 3 . 3 v 3 5 = p rc input standby power v i = 53 v (turned off with rc) 0.4 w f s default switching frequency 0-100% of max i o z h k 7 4 1 0 4 1 3 3 1 v oi output voltage initial setting and accuracy t p1 = 25c, v i = 53 v, i o = 35 a 11.88 12.0 12.12 v v o output adjust range see operating information 4.0 13.2 v output voltage tolerance band 0-100% of max i o v 4 2 . 2 1 6 7 . 1 1 line regulation max i o v m 5 5 1 2 load regulation v i = 53 v, 0-100% of max i o 6 40 mv v tr load transient voltage deviation v i = 53 v, load step 25-75-25% of max i o , di/dt = 1 a/ s 0.4 v t tr s 0 5 1 e m i t y r e v o c e r t n e i s n a r t d a o l t r ramp-up time (from 10?90% of v oi ) 10-100% of max i o, t p1 , t p3 = 25oc, v i = 53 v 8 ms t s start-up time (from v i connection to 90% of v oi ) 24 ms t f vin shutdown fall time (from v i off to 10% of v o ) max i o 6 . 3 m s i o = 0 a, c o s 7 f m 0 = t rc rc start-up time max i o s m 2 1 rc shutdown fall time (from rc off to 10% of v o ) max i o s m 1 . 5 i o = 0 a, c o s 7 f m 0 = i o a 5 3 0 t n e r r u c t u p t u o i lim current limit threshold v o = 10.8 v, t p1 , t p3 < max t p1 , t p3 37 41 44 a i sc short circuit current t p1 , t p3 = 25oc, see note 1 12 a c out recommended capacitive load t p1 , t p3 = 25oc, see note 2 0.1 3.5 6 mf v oac output ripple & noise see ripple & noise section, max i o , see note 3 60 150 mvp-p ovp over voltage protection t p1 , t p3 = 25c, v i = 53 v, 10-100% of max i o 15.6 v rc sink current, see note 4 see operating information 0.7 ma trigger level decreasing / increasing rc-voltage 2.6 / 2.9 v note 1: ocp in hic-up mode note 2: low esr-value note 3: cout = 100 f, external capacitance note 4: sink current drawn by external device connected to the rc pin. minimum sink current required guaranteeing activated rc function. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 7 of 36 cui inc model : nqb description : fully regulated advanced bus converters typical characteristics 12.0 v, 35 a / 420 w n o i t a p i s s i d r e w o p y c n e i c i f f e 75 80 85 90 95 100 0 5 10 15 20 25 30 35 [a] [%] 36 v 48 v 53 v 75 v 0 4 8 12 16 20 24 0 5 10 15 20 25 30 35 [a] [w] 36 v 48 v 53 v 75 v efficiency vs. load current and input voltage at t p1 , t p3 = +25 c dissipated power vs. load current and input voltage at t p1 , t p3 = +25c output characteristics current limit characteristics 11.8 11.9 12.0 12.1 12.2 0 5 10 15 20 25 30 35 [a] [v] 36 v 48 v 53 v 75 v 3.0 5.0 7.0 9.0 11.0 13.0 35 37 39 41 43 45 [a] [v] 36 v 48 v 53 v 75 v o utput voltage vs. load current at t p1 , t p3 = +25c o utput voltage vs. load current at i o > max i o , t p1 , t p3 = +25c www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 8 of 36 cui inc model : nqb description : fully regulated advanced bus converters typical characteristics 12.0 v, 35 a / 420 w n w o d - t u h s p u - t r a t s start-up enabled by connecting v i at: t p1 , t p3 = +25c, v i = 53 v, i o = 35 a resistive load. top trace: output voltage (5 v/div.). bottom trace: input voltage (50 v/div.). time scale: (10 ms/div.). shut-down enabled by disconnecting v i at: t p1 , t p3 = +25c, v i = 53 v, i o =35 a resistive load. top trace: output voltage (5 v/div.). bottom trace: input voltage (50 v/div.). time scale: (2 ms/div.). e s n o p s e r t n e i s n a r t d a o l t u p t u o e s i o n & e l p p i r t u p t u o output voltage ripple at: t p1 , t p3 = +25c, v i = 53 v, i o = 35 a resistive load. trace: output voltage (50 mv/div.). time scale: (2 s/div.). output voltage response to load current step-change (8.75-26.25-8.75 a) at: t p1 , t p3 =+25c, v i = 53 v, c o = 3.5 mf. top trace: output voltage (0.5 v/div.). bottom trace: output current (20 a/div.). time scale: (0.5 ms/div.). e s n o p s e r t n e i s n a r t e g a t l o v t u p n i output voltage response to input voltage transient at: t p1 , t p3 = +25c, v i = 36-75 v, i o = 17 a resistive load, c o = 3.5 mf top trace: output voltage (2 v/div.). bottom trace: input voltage (20 v/div.). time scale: (0.5 ms/div.). www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 9 of 36 cui inc model : nqb description : fully regulated advanced bus converters typical characteristics 12.0 v, 35 a / 420 w output current derating ? open frame 0 5 10 15 20 25 30 35 0 20 40 60 80 100 [c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. co nv. available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. output current derating ? base plate thermal resistance ? base plate 0 5 10 15 20 25 30 35 020406080100[c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. con v. 0 1 2 3 4 5 6 0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s] [c/w] available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. thermal resistance vs. airspeed measured at the converter. tested in wind tunnel with airflow and test conditions as per the thermal consideration section. v i = 53 v. output current derating ? base plate + heat sink output current derating ? cold wall sealed box 0 5 10 15 20 25 30 35 0 20 406080100[c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. con v. 0 5 10 15 20 25 30 35 40 020406080100[c] a ta m b 85 c available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. tested with plate fin transverse heatsink, height 0.23 in, p0114 thermal pad. available load current vs. base plate temperature at 85oc ambient. v i = 53 v. see thermal consideration section. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 10 of 36 cui inc model : nqb description : fully regulated advanced bus converters 12.0 v, 39 a / 468 w electrical specification t p1 , t p3 = -40 to +90oc, v i = 40 to 60 v, sense pins connected to output pins unless otherwise specified under conditions. typical values given at: t p1 , t p3 = +25c, v i = 53 v, max i o , unless otherwise specified under conditions. additional c out = 3.9 mf, configuration file: 19010-cda 102 0314/002 characteristics conditions min typ max unit v i v 0 6 0 4 e g n a r e g a t l o v t u p n i v ioff turn-off input voltage decreasing input voltage 36 37 38 v v ion turn-on input voltage increasing input voltage 38 39 40 v c i 8 1 e c n a t i c a p a c t u p n i l a n r e t n i f p o w 8 6 4 0 r e w o p t u p t u o efficiency 50% of max i o 7 . 6 9 % max i o 7 . 5 9 50% of max i o , v i = 48 v 96.8 max i o , v i 6 . 5 9 v 8 4 = p d power dissipation max i o w 5 . 0 3 2 . 1 2 p li input idling power i o = 0 a, v i w 8 . 2 v 3 5 = p rc input standby power v i = 53 v (turned off with rc) 0.4 w f s default switching frequency 0-100% of max i o z h k 7 4 1 0 4 1 3 3 1 v oi output voltage initial setting and accuracy t p1 = +25c, v i = 53 v, i o = 39 a 11.88 12.0 12.12 v v o output adjust range see operating information 4.0 13.2 v output voltage tolerance band 0-100% of max i o v 4 2 . 2 1 6 7 . 1 1 line regulation max i o v m 0 6 1 3 load regulation v i = 53 v, 1-100% of max i o 5 25 mv v tr load transient voltage deviation v i = 53 v, load step 25-75-25% of max i o , di/dt = 1 a/ s 0.4 v t tr s 0 5 1 e m i t y r e v o c e r t n e i s n a r t d a o l t r ramp-up time (from 10?90% of v oi ) 10-100% of max i o, t p1 = 25oc, v i = 53 v 8 ms t s start-up time (from v i connection to 90% of v oi ) 24 ms t f vin shutdown fall time (from v i off to 10% of v o ) max i o 3 m s i o = 0 a, c o s 7 f m 0 = t rc rc start-up time max i o s m 2 1 rc shutdown fall time (from rc off to 10% of v o ) max i o s m 5 . 4 i o = 0 a, c o s 7 f m 0 = i o a 9 3 0 t n e r r u c t u p t u o i lim current limit threshold v o = 10.8 v, t p1 , t p3 < max t p1 , t p3 41 44 47 a i sc short circuit current t p1 a 4 1 1 e t o n e e s , c o 5 2 = c out recommended capacitive load t p1 = 25oc, see note 2 0.1 3.9 6 mf v oac output ripple & noise see ripple & noise section, max i o , see note 3 50 110 mvp-p ovp over voltage protection t p1 , t p3 = 25c, v i = 53 v, 10-100% of max i o 15.6 v rc sink current, see note 4 see operating information 0.7 ma trigger level decreasing / increasing rc-voltage 2.6 / 2.9 v note 1: ocp in hic-up mode note 2: low esr-value note 3: cout = 100 f, external capacitance note 4: sink current drawn by external device connected to the rc pin. minimum sink current required guaranteeing activated rc function. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 11 of 36 cui inc model : nqb description : fully regulated advanced bus converters typical characteristics 12.0 v, 39 a / 468 w n o i t a p i s s i d r e w o p y c n e i c i f f e 75 80 85 90 95 100 0 5 10 15 20 25 30 35 40 [a] [%] 40 v 48 v 53 v 60 v 0 5 10 15 20 25 0 5 10 15 20 25 30 35 40 [a] [w] 40 v 48 v 53 v 60 v efficiency vs. load current and input voltage at t p1 , t p3 = +25 c dissipated power vs. load current and input voltage at t p1 , t p3 = +25c output characteristics current limit characteristics 11.8 11.9 12.0 12.1 12.2 0 5 10 15 20 25 30 35 40 [a] [v] 40 v 48 v 53 v 60 v 3.0 5.0 7.0 9.0 11.0 13.0 39 41 43 45 47 [a] [v] 40 v 48 v 53 v 60 v o utput voltage vs. load current at t p1 , t p3 = +25c o utput voltage vs. load current at i o > max i o , t p1 , t p3 = +25c www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 12 of 36 cui inc model : nqb description : fully regulated advanced bus converters typical characteristics 12.0 v, 39 a / 468 w n w o d - t u h s p u - t r a t s start-up enabled by connecting v i at: t p1 , t p3 = +25c, v i = 53 v, i o = 39 a resistive load. top trace: output voltage (5 v/div.). bottom trace: input voltage (50 v/div.). time scale: (10 ms/div.). shut-down enabled by disconnecting v i at: t p1 , t p3 = +25c, v i = 53 v, i o =39 a resistive load. top trace: output voltage (5 v/div.). bottom trace: input voltage (50 v/div.). time scale: (2 ms/div.). e s n o p s e r t n e i s n a r t d a o l t u p t u o e s i o n & e l p p i r t u p t u o output voltage ripple at: t p1 , t p3 = +25c, v i = 53 v, i o = 39 a resistive load. trace: output voltage (50 mv/div.). time scale: (2 s/div.). output voltage response to load current step-change (9.75-29.25-9.75 a) at: t p1 , t p3 =+25c, v i = 53 v, c o = 3.9 mf. top trace: output voltage (0.5 v/div.). bottom trace: output current (20 a/div.). time scale: (0.5 ms/div.). e s n o p s e r t n e i s n a r t e g a t l o v t u p n i output voltage response to input voltage transient at: t p1 , t p3 = +25c, v i = 40-60 v, i o = 19,5 a resistive load, c o = 3.9 mf top trace: output voltage (2 v/div.). bottom trace: input voltage (20 v/div.). time scale: (0.5 ms/div.). www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 13 of 36 cui inc model : nqb description : fully regulated advanced bus converters typical characteristics 12.0 v, 39 a / 468 w output current derating ? open frame 0 5 10 15 20 25 30 35 40 0 20406080100[c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. con v. available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. output current derating ? base plate thermal resistance ? base plate 0 5 10 15 20 25 30 35 40 020406080100[c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. con v. 0 1 2 3 4 5 6 0.0 0.5 1.0 1.5 2.0 2.5 3.0[m/s] [c/w] available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. thermal resistance vs. airspeed measured at the converter. tested in wind tunnel with airflow and test conditions as per the thermal consideration section. v i = 53 v. output current derating ? base plate + heat sink output current derating ? cold wall sealed box 0 5 10 15 20 25 30 35 40 020406080100[c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. con v. 0 5 10 15 20 25 30 35 40 0 20 40 60 80 100 [c] a ta m b 85 c available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. tested with plate fin transverse heatsink, height 0.23 in, p0114 thermal pad. available load current vs. base plate temperature at 85oc ambient. v i = 53 v. see thermal consideration section. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 14 of 36 cui inc model : nqb description : fully regulated advanced bus converters 12.45 v, 35 a / 415 w electrical specification t p1 , t p3 = -40 to +90oc, v i = 36 to 75 v, sense pins connected to output pins unless otherwise specified under conditions. typical values given at: t p1 , t p3 = +25c, v i = 53 v, max i o , unless otherwise specified under conditions. additional c out = 3.5 mf, configuration file: 19010-cda 102 0314/014 characteristics conditions min typ max unit v i v 5 7 6 3 e g n a r e g a t l o v t u p n i v ioff turn-off input voltage decreasing input voltage 32 33 34 v v ion turn-on input voltage increasing input voltage 34 35 36 v c i 8 1 e c n a t i c a p a c t u p n i l a n r e t n i f p o w 5 1 4 0 r e w o p t u p t u o efficiency 50% of max i o 2 . 6 9 % max i o 5 . 5 9 50% of max i o , v i = 48 v 96.4 max i o , v i 5 . 5 9 v 8 4 = p d power dissipation max i o w 5 . 9 2 5 . 9 1 p li input idling power i o = 0 a, v i w 2 . 3 v 3 5 = p rc input standby power v i = 53 v (turned off with rc) 0.4 w f s default switching frequency 0-100% of max i o z h k 7 4 1 0 4 1 3 3 1 v oi output voltage initial setting and accuracy t p1 = 25c, v i = 53 v, i o = 0 a 12.415 12.45 12.485 v v o output adjust range see operating information 4.0 13.2 v output voltage tolerance band 0-100% of max i o v 7 . 2 1 5 . 1 1 line regulation max i o v m 5 5 0 2 load regulation v i = 53 v, 0-100% of max i o 500 600 700 mv v tr load transient voltage deviation v i = 53 v, load step 25-75-25% of max i o , di/dt = 1 a/ s 0.4 v t tr s 0 5 1 e m i t y r e v o c e r t n e i s n a r t d a o l t r ramp-up time (from 10?90% of v oi ) 10-100% of max i o, t p1 , t p3 = 25oc, v i = 53 v 23 ms t s start-up time (from v i connection to 90% of v oi ) 39 ms t f vin shutdown fall time (from v i off to 10% of v o ) max i o 6 . 3 m s i o = 0 a, c o s 7 f m 0 = t rc rc start-up time max i o s m 7 2 rc shutdown fall time (from rc off to 10% of v o ) max i o s m 1 . 5 i o = 0 a, c o s 7 f m 0 = i o a 5 3 0 t n e r r u c t u p t u o i lim current limit threshold v o = 10.8 v, t p1 , t p3 < max t p1 , t p3 37 41 44 a i sc short circuit current t p1 , t p3 = 25oc, see note 1 12 a c out recommended capacitive load t p1 , t p3 = 25oc, see note 2 0.1 3.5 6 mf v oac output ripple & noise see ripple & noise section, max i o , see note 3 60 150 mvp-p ovp over voltage protection t p1 , t p3 = 25c, v i = 53 v, 10-100% of max i o 15.6 v rc sink current, see note 4 see operating information 0.7 ma trigger level decreasing / increasing rc-voltage 2.6 / 2.9 v note 1: ocp in hic-up mode note 2: low esr-value note 3: cout = 100 f, external capacitance note 4: sink current drawn by external device connected to the rc pin. minimum sink current required guaranteeing activated rc function. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 15 of 36 cui inc model : nqb description : fully regulated advanced bus converters typical characteristics 12.45 v, 63 a / 747 w, two products in parallel n o i t a p i s s i d r e w o p y c n e i c i f f e 75 80 85 90 95 100 0 102030405060[a] [%] 36 v 48 v 53 v 75 v 0 5 10 15 20 25 30 35 40 45 0 1020304050 60[a] [w] 36 v 48 v 53 v 75 v efficiency vs. load current and input voltage at t p1 , t p3 = +25 c dissipated power vs. load current and input voltage at t p1 , t p3 = +25c output characteristics current limit characteristics 11. 8 11. 9 12 . 0 12 . 1 12 . 2 12 . 3 12 . 4 12 . 5 0102030405060[a] [v] 36 v 48 v 53 v 75 v 3.0 5.0 7.0 9.0 11.0 13.0 63 65 67 69 71 73 75 77 79 81 83 [a] [v] 36 v 48 v 53 v 75 v o utput voltage vs. load current at t p1 , t p3 = +25c o utput voltage vs. load current at i o > max i o , t p1 , t p3 = +25c start-up output load transient response start-up enabled by connecting v i at: t p1 , t p3 = +25c, v i = 53 v, i o = 63 a resistive load. top trace: output voltage (5 v/div.). bottom trace: input voltage (50 v/div.). time scale: (10 ms/div.). output voltage response to load current step-change (15.8-47.3-15.8 a) at: t p1 , t p3 =+25c, v i = 53 v, c o = 3.5 mf. top trace: output voltage (0.5 v/div.). bottom trace: output current (20 a/div.). time scale: (0.5 ms/div.). www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 16 of 36 cui inc model : nqb description : fully regulated advanced bus converters typical characteristics 12.45 v, 35 a / 415 w output current derating ? open frame 0 5 10 15 20 25 30 35 0 20406080100[c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. co nv. available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. output current derating ? base plate thermal resistance ? base plate 0 5 10 15 20 25 30 35 0 20406080100[c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. con v. 0 1 2 3 4 5 6 0.0 0.5 1.0 1.5 2.0 2.5 3.0 [m/s] [c/w] available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. thermal resistance vs. airspeed measured at the converter. tested in wind tunnel with airflow and test conditions as per the thermal consideration section. v i = 53 v. output current derating ? base plate + heat sink output current derating ? cold wall sealed box 0 5 10 15 20 25 30 35 0 20 40 60 80 100 [c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. con v. 0 5 10 15 20 25 30 35 40 020406080100[c] a ta m b 85 c available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. tested with plate fin transverse heatsink, height 0.23 in, p0114 thermal pad. available load current vs. base plate temperature at 85oc ambient. v i = 53 v. see thermal consideration section. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 17 of 36 cui inc model : nqb description : fully regulated advanced bus converters 12.45 v, 39 a / 462 w electrical specification t p1 , t p3 = -40 to +90oc, v i = 40 to 60 v, sense pins connected to output pins unless otherwise specified under conditions. typical values given at: t p1 , t p3 = +25c, v i = 53 v, max i o , unless otherwise specified under conditions. additional c out = 3.9 mf, configuration file: 19010-cda 102 0314/017 characteristics conditions min typ max unit v i v 0 6 0 4 e g n a r e g a t l o v t u p n i v ioff turn-off input voltage decreasing input voltage 36 37 38 v v ion turn-on input voltage increasing input voltage 38 39 40 v c i 8 1 e c n a t i c a p a c t u p n i l a n r e t n i f p o w 2 6 4 0 r e w o p t u p t u o efficiency 50% of max i o 7 . 6 9 % max i o 7 . 5 9 50% of max i o , v i = 48 v 96.8 max i o , v i 6 . 5 9 v 8 4 = p d power dissipation max i o w 5 . 0 3 0 . 1 2 p li input idling power i o = 0 a, v i w 8 . 2 v 3 5 = p rc input standby power v i = 53 v (turned off with rc) 0.4 w f s default switching frequency 0-100% of max i o z h k 7 4 1 0 4 1 3 3 1 v oi output voltage initial setting and accuracy t p1 = +25c, v i = 53 v, i o = 0 a 12.415 12.45 12.485 v v o output adjust range see operating information 4.0 13.2 v output voltage tolerance band 0-100% of max i o v 7 . 2 1 5 . 1 1 line regulation max i o v m 0 6 1 3 load regulation v i = 53 v, 0-100% of max i o 500 600 700 mv v tr load transient voltage deviation v i = 53 v, load step 25-75-25% of max i o , di/dt = 1 a/ s 0.4 v t tr s 0 5 1 e m i t y r e v o c e r t n e i s n a r t d a o l t r ramp-up time (from 10?90% of v oi ) 10-100% of max i o, t p1 = 25oc, v i = 53 v 23 ms t s start-up time (from v i connection to 90% of v oi ) 39 ms t f vin shutdown fall time (from v i off to 10% of v o ) max i o 3 m s i o = 0 a, c o s 7 f m 0 = t rc rc start-up time max i o s m 7 2 rc shutdown fall time (from rc off to 10% of v o ) max i o s m 5 . 4 i o = 0 a, c o s 7 f m 0 = i o a 9 3 0 t n e r r u c t u p t u o i lim current limit threshold v o = 10.8 v, t p1 , t p3 < max t p1 , t p3 41 44 47 a i sc short circuit current t p1 a 4 1 1 e t o n e e s , c o 5 2 = c out recommended capacitive load t p1 = 25oc, see note 2 0.1 3.9 6 mf v oac output ripple & noise see ripple & noise section, max i o , see note 3 50 110 mvp-p ovp over voltage protection t p1 , t p3 = 25c, v i = 53 v, 10-100% of max i o 15.6 v rc sink current, see note 4 see operating information 0.7 ma trigger level decreasing / increasing rc-voltage 2.6 / 2.9 v note 1: ocp in hic-up mode note 2: low esr-value note 3: cout = 100 f, external capacitance note 4: sink current drawn by external device connected to the rc pin. minimum sink current required guaranteeing activated rc function. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 18 of 36 cui inc model : nqb description : fully regulated advanced bus converters typical characteristics 12.45 v, 70 a / 830 w, two products in parallel n o i t a p i s s i d r e w o p y c n e i c i f f e 75 80 85 90 95 100 0 10203040506070[a] [%] 40 v 48 v 53 v 60 v 0 5 10 15 20 25 30 35 40 45 0 10203040506070 [a] [w] 40 v 48 v 53 v 60 v efficiency vs. load current and input voltage at t p1 , t p3 = +25 c dissipated power vs. load current and input voltage at t p1 , t p3 = +25c output characteristics current limit characteristics 11.8 11.9 12.0 12.1 12.2 12.3 12.4 12.5 0 10203040506070[a] [v] 40 v 48 v 53 v 60 v 3.0 5.0 7.0 9.0 11.0 13.0 70 75 80 85 90 [a] [v] 40 v 48 v 53 v 60 v o utput voltage vs. load current at t p1 , t p3 = +25c o utput voltage vs. load current at i o > max i o , t p1 , t p3 = +25c start-up output load transient response start-up enabled by connecting v i at: t p1 , t p3 = +25c, v i = 53 v, i o = 70 a resistive load. top trace: output voltage (5 v/div.). bottom trace: input voltage (50 v/div.). time scale: (10 ms/div.). output voltage response to load current step-change (17.5-52.5-17.5 a) at: t p1 , t p3 =+25c, v i = 53 v, c o = 3.9 mf top trace: output voltage (0.5 v/div.). bottom trace: output current (20 a/div.). time scale: (0.5 ms/div.). www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 19 of 36 cui inc model : nqb description : fully regulated advanced bus converters typical characteristics 12.45 v, 39 a / 462 w output current derating ? open frame 0 5 10 15 20 25 30 35 40 0 20 40 60 80 100 [c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. con v. available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. output current derating ? base plate thermal resistance ? base plate 0 5 10 15 20 25 30 35 40 0 20406080100[c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. con v. 0 1 2 3 4 5 6 0.0 0.5 1.0 1.5 2.0 2.5 3.0[m/s] [c/w] available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. thermal resistance vs. airspeed measured at the converter. tested in wind tunnel with airflow and test conditions as per the thermal consideration section. v i = 53 v. output current derating ? base plate + heat sink output current derating ? cold wall sealed box 0 5 10 15 20 25 30 35 40 0 20406080100[c] [a] 3. 0 m/ s 2. 0 m/ s 1. 5 m/ s 1. 0 m/ s 0. 5 m/ s na t. con v. 0 5 10 15 20 25 30 35 40 020406080100[c] a ta m b 85 c available load current vs. ambient air temperature and airflow at v i = 53 v. see thermal consideration section. tested with plate fin transverse heatsink, height 0.23 in, p0114 thermal pad. available load current vs. base plate temperature at 85oc ambient. v i = 53 v. see thermal consideration section. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 20 of 36 cui inc model : nqb description : fully regulated advanced bus converters emc specification conducted emi measured according to en55022, cispr 22 and fcc part 15j (see test set-up). see design note 009 for detailed information. the fundamental switching frequency is 140 khz for nqb at v i = 53 v, max i o . conducted emi input terminal value (typ) emi without filter optional external filter for class b suggested external input filter in order to meet class b in en 55022, cispr 22 and fcc part 15j. l1 c1 c2 c3 c4 c5 r - + module + - 0 0 l2 filter components: c1 = 1 f c2 = 1 f+220 f c3 = 1 f+220 f c4,c5 = 2.2 nf l1 = 810 h l2 = 810 h emi with filter test set-up layout recommendations the radiated emi performance of the product will depend on the pwb layout and ground layer design. it is also important to consider the stand-off of the product. if a ground layer is used, it should be connected to the output of the product and the equipment ground or chassis. a ground layer will increase the stray capacitance in the pwb and improve the high frequency emc performance. output ripple and noise output ripple and noise measured according to figure below. see design note 022 for detailed information. output ripple and noise test setup www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 21 of 36 cui inc model : nqb description : fully regulated advanced bus converters operating information power management overview this product is equipped with a pmbus interface. the product incorporates a wide range of readable and configurable power management features that are simple to implement with a minimum of external components. additionally, the product includes protection features that continuously safeguard the load from damage due to unexpected system faults. a fault is also shown as an alert on the salert pin. the following product parameters can continuously be monitored by a host: input voltage, output voltage/current, duty cycle and internal temperature. the product is delivered with a default configuration suitable for a wide range operation in terms of input voltage, output voltage, and load. the configurat ion is stored in an internal non-volatile memory (nvm). all power management functions can be reconfigured using the pmbus interface. please contact your local cui power modules representative for design support of custom configurations or appropriate sw tools for design and down-load of your own configurations. input voltage the nqb consists of two different product families designed for two different input voltage ranges, 36 to 75 vdc and 40 to 60 vdc, see ordering information. the input voltage range 36 to 75 vdc meets the requirements of the european telecom standard ets 300 132-2 for normal input voltage range in C48 and C60 vdc systems, -40.5 to -57.0 v and C50.0 to -72 v respectively. a t input voltages exceeding 75 v, the power loss will be higher than at normal input voltage and t p1 must be limited to absolute max +125c. the absolute maximum continuous input voltage is 80 vdc. the input voltage range 40 to 60 vdc meets the requirements for normal input voltage range in -48 v systems, -40.5 to -57.0 v. at input voltages exceeding 60 v, the power loss will be higher than at normal input voltage and t p1 must be limited to absolute max +125c. the absolute maximum continuous input voltage is 65 vdc. turn-off input voltage the product monitors the input voltage and will turn on and turn off at predetermined levels. the minimum hysteresis between turn on and turn off input voltage is 2 v. the turn on and turn off levels of the product can be reconfigured using the pmbus interface remote control (rc) the products are fitted with a configurable remote control function. the primary remote control is referenced to the primary negative input connection (-in). the rc function allows the converter to be turned on/off by an external device like a semiconductor or mechanical switch. the rc pin has an internal pull up resistor. the remote control functions can also be configured using the pmbus the device should be capable of sinking 0.7 ma. when the rc pin is left open, the voltage generated on the rc pin is max 6 v. the standard product is provided with negative logic remote control and will be off until the rc pin is connected to the -in. to turn on the product the voltage between rc pin and -in should be less than 1 v. to turn off the product the rc pin should be left open for a minimum of time 150 s, the same time requirement applies when the product shall turn on. in situations where it is desired to have the product to power up automatically without the need for control signals or a switch, the rc pin can be wired directly to Cin or disabled via the 0xe3 command. the logic option for the primary remote control is configured via 0xe3 command using the pmbus. remote control (secondary side) the ctrl-pin can be configured as remote control via the pmbus interface. in the default configuration the ctrl-pin is disabled and floating. the output can be configured to internal pull-up to 3.3 v using the mfr_multi_pin_config (0xf9) pmbus command. the ctrl-pin can be left open when not used. the logic options for the secondary remote control can be positive or negative logic. the logic option for the secondary remote control is configured via on_off_config (0x02) command using the pmbus interface, see also mfr_multi_pin_config section. input and output impedance the impedance of both the input source and the load will interact with the impedance of the product. it is important that the input source has low characteristic impedance. minimum recommended external input capacitance is 100 f. the performance in some applications can be enhanced by addition of external capacitance as described under external decoupling capacitors. external decoupling capacitors when powering loads with significant dynamic current requirements, the voltage regulation at the point of load can be improved by addition of decoupling capacitors at the load. the most effective technique is to locate low esr ceramic and electrolytic capacitors as close to the load as possible, using several parallel capacitors to lower the effective esr. the ceramic capacitors will handle high-frequency dynamic load changes while the electrolytic capacitors are used to handle low frequency dynamic load changes. ceramic capacitors will also reduce any high frequency no ise at the load. it is equally important to use low resistance and low inductance pwb layouts and cabling. extern al decoupling capacitors will www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 22 of 36 cui inc model : nqb description : fully regulated advanced bus converters become part of the products control loop. the control loop is optimized for a wide range of external capacitance and the maximum recommended value that could be used without any additional analysis is found in the electrical specification. the esr of the capacitors is a very important parameter. stable operation is guaranteed with a verified esr value of >10 m ? across the output connections. for further information please contact your local cui power modules representative. parallel operation (droop load share, dls) the nqb, dls products, are variants that can be connected in parallel. the products have a pre-configured voltage droop: the stated output voltage set point is at no load. the output voltage will decrease when the load current is increased. the voltage will droop 0.6 v while load reaches max load. this feature allows the products to be connected in parallel and share the current with 10% accuracy. up to 90% of max output current can be used from each product. when running dls-products in parallel command (0xf9) must be set according to mfr_multi_pin_config. to prevent unnecessary current stress, changes of the output voltage must be done with the output disabled. this must be considered for all commands that affect the output voltage. voltage regulation dls products 11.6 11.8 12.0 12.2 12.4 12.6 12.8 0 10203040506070 output current [a] output voltage [v] mod ule 1 mod ule 2 mod ule 1+2 feed forward capability the nqb products have a feed forward function implemented that can handle sudden input voltage changes. the output voltage will be regulated during an input transient and will typically stay within 10% when an input transient is applied. pmbus configuration and support the product provides a pmbus digital interface that enables the user to configure many aspects of the device operation as well as monitor the input and output parameters. please contact your local cui power modules representative for appropriate sw tools to down-load new configurations. output voltage adjust using pmbus the output voltage of the product can be reconfigured using the pmbus interface. margin up/down controls these controls allow the output voltage to be momentarily adjusted, either up or down, by a nominal 10%. this provides a convenient method for dynamically testing the operation of the load circuit over its supply margin or range. it can also be used to verify the function of supply voltage supervisors. the margin up and down levels of the product can be re- configured using the pmbus interface. soft-start power up the default rise time of the ramp up is 10 ms. when starting by applying input voltage the con trol circuit boot-up time adds an additional 15 ms delay. the soft-start power up of the product can be reconfigured using the pmbus interface. the dls variants have a pre-configured ramp up time of 25 ms. remote sense the product has remote sense that can be used to compensate for voltage drops between the output and the point of load. the sense traces should be located close to the pwb ground layer to reduce noise susceptibility. the remote sense circuitry will compensate for up to 10% voltage drop between output pins and the point of load. if the remote sense is not needed +sense should be connected to +out and -sense should be connected to -out. to be able to use remote sense the converter must be equipped with a communication interface. temperature protection (otp, utp) the products are protected from thermal overload by an internal temperature shutdown protection. when t p1 as defined in thermal consideration section is exceeded the product will shut down. the product will make continuous attempts to start up (non-latching mode) and resume normal operation automatically when the temperature has dropped below the temperature threshold set in the command ot_warn_limit (0x51); the hysteresis is defined in general electrical specification. the otp and hysteresis of the product can be re-configured using the pmbus interface. the product has also an under temperature protection. the otp and utp fault limit and fault response can be configured via the pmbus. note: using the fault response continue without interruption may cause permanent damage to the product over voltage protection (ovp) the product includes over voltage limiting circuitry for protection of the load. the default ovp limit is 30% above the nominal output voltage. if the output voltage exceeds the ovp limit, the product can respond in different ways. the default response from an over voltage fault is to immediately shut down. the dev ice will continuously check for the presence of the fault condition, and when the fault condition no longer exists the device will be re-enabled. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 23 of 36 cui inc model : nqb description : fully regulated advanced bus converters the ovp fault level and fault response can be re-configured using the pmbus interface. over current protection (ocp) the product includes current limiting circuitry for protection at continuous overload. the default setting for the product is hic- up mode if the maximum output current is exceeded and the output voltage is below 0.3vout, set in command iout_oc_lv_fault_limit (0x48). above the trip voltage value in command 0x48 the product will continue operate while maintaining the output current at the value set by iout_oc_fault_limit (0x46). the load distribution should be designed for the maximum output short circuit current specified. droop load share variants (dls) will enter hic-up mode, with a trip voltage, 0.04vout, set in command iout_oc_lv_fault_limit (0x48). above the trip voltage in command (0x48) the product wi ll continue operate while maintaining the output current at the value set by iout_oc_fault_limit (0x46). the over current protection of the product can be reconfigured using the pmbus interface. input over/under voltage protection the input of the product can be protected from high input voltage and low input voltage. the over/under-voltage fault level and fault response can be configured via the pmbus interface. pre-bias start-up capability the product has a pre-bias start up functionality and will not sink current during start up if a pre-bias source is present at the output terminals. if the pre-bias voltage is lower than the target value set in vout_command (0x21), the product will ramp up to the target value. if the pre-bias voltage is higher than the target value set in vout_command (0x21), the product will ramp down to the target value and in this case sink current for a limited of time set in the command toff_max_warn_limit (0x66). power good the product provides power good (pg) flag in the status word register that indicates the output voltage is within a specified tolerance of its target level and no fault condition exists. if specified in section connections, the product also provides a pg signal output. the power good signal is by default configured as active low, push-pull and can be re- configured via the pmbus interface. the power good output can be configured as push-pull or high z when active to permit anding of parallel devices. it is not recommended to use push-pull when paralleling pg-pins, see mfr_multi_pin_config. synchronization, tracking and external reference this product does not support synchronization, tracking or external reference. switching frequency adjust using pmbus the switching frequency is set to 140 khz as default but this can be reconfigured via the pmbus interface. the product is optimized at this frequency but can run at lower and higher frequency, (125-150 khz). the electrical performance can be affected if the switching frequency is changed. mfr_multi_pin_config the mfr_multi_pin_config (0xf9) command enables or disables different functions inside the product. this command can be configured according to the table for different functions. bit 7:6 00 = stand alone 01 = slave (n/a) 10 = dls 11 = master (n/a) 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 bit 5 power good high z when active 0 0 0 0 1 1 0 0 0 0 1 1 bit 4 tracking enable (n/a) 0 0 0 0 0 0 0 0 0 0 0 0 bit 3 external reference (n/a) 0 0 0 0 0 0 0 0 0 0 0 0 bit 2 power good enable 0 0 1 1 1 1 0 0 1 1 1 1 bit 1 reserved 1 1 1 1 1 1 0 0 0 0 0 0 bit 0 secondary remote control pull up/down resistor enable 1) 0 1 0 1 0 1 0 1 0 1 0 1 1) when not used with pmbus, the ctrl input can be internally pulled up or down depending on if it is active high or low. when active low it will be pulled up and vice versa dls, pmbus control (0x82) dls, sec rc w / pull up/down (0x83) dls, power good push-pull, pmbus control (0x86) dls, power good push-pull, sec rc w/ pull up/down (0x87) dls, power good high z when active, pmbus control (0xa6) dls, power good high z when active, sec rc w/ pull up/down (0xa7) stand alone, pmbus control (0x00) stand alone, sec rc w/ pull up/down (0x01) stand alone, power good push-pull, pmbus control (0x04) stand alone, power good push-pull, sec rc w/ pull up/down (0x05) stand alone, power good high z when active, pmbus control (0x24) stand alone, power good high z when active, sec rc w/ pull up/down (0x25) the mfr_multi_pin_config can be reconfigured using the pmbus interface. default configuration is set to power good push-pull (0x04) for stand alone variants and dls power good push-pull (0x86) for droop load share variants. user customized settings this product has two data storage set: default data (cui factory) and user data. the user data sets priority is higher than the default data. the user data area is empty while shipped to customer. after boot-up, if the controller found no data stored in user data area, it will load default data instead. customer can change the ram data and store the changes into flash memory by pmbus store_user_all, next power cycle will load the user data into ram for execute. store_default_all is write protected to ensure the factory settings is always available for recovery. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 24 of 36 cui inc model : nqb description : fully regulated advanced bus converters output voltage regulation the nqb products are designed to be fully regulated within the plotted area. operating outside this area is not recommended. 12.0 12.2 12.4 12.6 12.8 13.0 13.2 13.4 35 45 55 65 75 vin [v] vout [v] vin range: 36-75vdc 12.0 12.2 12.4 12.6 12.8 13.0 13.2 13.4 35 40 45 50 55 60 65 vin [v] vout [v] vin range:40-60vdc thermal consideration general the product is designed to operate in different thermal environments and sufficient cooling must be provided to ensure reliable operation. for products mounted on a pwb without a heat sink attached, cooling is achieved mainly by conduction, from the pins to the host board, and convection, which is dependant on the airflow across the product. increased airflow enhances the cooling of the product. the output current derating graph found in the output section for each model provides the available output current vs. ambient air temperature and air velocity at v i =53 v. the product is tested on a 254 x 254 mm, 35 m (1 oz), 16-layer test board mounted vertically in a wind tunnel with a cross-section of 608 x 203 mm. for products with base plate used in a sealed box/cold wall application, cooling is achieved mainly by conduction through the cold wall. the output current derating graphs are found in the output section for each model. the product is tested in a sealed box test set up with ambient temperatures 85, 55 and 25c. see design note 028 for further details. definition of product operating temperature the product operating temperature is used to monitor the temperature of the product, and proper thermal conditions can be verified by measuring the temperature at positions p1, p2, p3 and p4. the temperature at these positions (t p1 , t p2 , t p3 , t p4 ) should not exceed the maximum temperatures in the table below. the number of measurement points may vary with different thermal design and topology. temperatures above maximum t p1 , measured at the reference point p1 (t p3 / p3 for base plate versions) are not allowed and may cause permanent damage. position description max temperature p1 pwb (reference point, open frame) t p1 =125o c p2 opto-coupler t p2 =105o c p3 pwb (reference point for base-plate version) t p3 =125o c p4 primary mosfet t p4 =125o c www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 25 of 36 cui inc model : nqb description : fully regulated advanced bus converters open frame base plate (best air flow direction is from positive to negative pins.) ambient temperature calculation for products with base plate the maximum allowed ambient temperature can be calculated by using the thermal resistance. 1. the power loss is calculated by using the formula ((1/) - 1) output power = power losses (pd). = efficiency of product. e.g. 95 % = 0.95 2. find the thermal resistance (rth) in the thermal resistance graph found in the output section for each model. note that the thermal resistance can be significantly reduced if a heat sink is mounted on the top of the base plate. calculate the temperature increase ( t). t = rth x pd 3. max allowed ambient temperature is: max t p1 - t. e.g. nqb 0100/002 at 2m/s: 1. (( ) - 1) 468 w = 24.6 w 2. 19.5 w 2.8c/w = 69.0c} 3. 125 c - 69.0c = max ambient temperature is 56c the actual temperature will be dependent on several factors such as the pwb size, number of layers and direction of airflow. connections (top view) pin designation function 1 +in positive input 2 rc remote control 3 case case to gnd (optional) 4 -in negative input 5 -out negative output 6 s+ positive remote sense 7 s- negative remote sense 8 sa0 address pin 0 9 sa1 address pin 1 10 scl pmbus clock 11 sda pmbus data 12 pg power good output 13 dgnd pmbus ground 14 salert pmbus alert signal 15 ctrl pmbus remote control 16 +out positive output 1 0.95 www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 26 of 36 cui inc model : nqb description : fully regulated advanced bus converters pmbus interface this product provides a pmbus digital interface that enables the user to configure many aspects of the device operation as well as to monitor the input and output voltages, output current and device temperature. the product can be used with any standard two-wire i 2 c or smbus host device. in addition, the product is compatible with pmbus version 1.2 and includes an salert line to help mitigate bandwidth limitations related to continuous fault monitoring. the product supports 100 khz and 400 khz bus clock frequency only. the pmbus signals, scl, sda and salert require passive pull-up resistors as stated in the smbus specification. pull-up resistors are required to guarantee the rise time as follows: eq. 7 us c r p p 1 = where r p is the pull-up resistor value and c p is the bus load. the maximum allowed bus load is 400 pf. the pull-up resistor should be tied to an external supply between 2.7 to 5.5 v, which should be present prior to or during powe r -up. if the proper power supply is not available, voltage dividers may be applied. note that in this case, the resistance in the equation above corresponds to parallel connection of the resistors forming the voltage divider. it is recommended to always use pec (packet error check) when communicating via pmbus. for these products it is a requirement to use pec when using send byte to the device, for example command restore_default_all. monitoring via pmbus a system controller (host device) can monitor a wide variety of parameters through the pmbus interface. the controller can monitor fault conditions by monitoring the salert pin, which will be asserted when any number of pre-configured fault or warning conditions occur. the system controller can also continuously monitor any number of power conversion parameters including but not limited to the following: ? input voltage ? output voltage ? output current ? internal junction temperature ? switching frequency (monitors the set value not actual frequency) ? duty cycle software tools for design and production for this products cui provides software for configuring and monitoring via the pmbus interface. for more information please contact your local cui sales representative. pmbus addressing the following figure and table show recommended resistor values with min and max voltage range for hard-wiring pmbus addresses (series e12, 1% tolerance resistors suggested): schematic of connection of address resistors. sa0/sa1 index r sa0 /r sa1 [k ] 0 10 1 22 2 33 3 47 4 68 5 100 6 150 7 220 the sa0 and sa1 pins can be configured with a resistor to gnd according to the following equation. pmbus address = 8 x (sa0value) + (sa1 value) if the calculated pmbus address is 0, 11 or 12, pmbus address 127 is assigned instead. from a system point of view, the user shall also be aware of further limitations of the addresses as stated in the pmbus specification. it is not recommended to keep the sa0 and sa1 pins left open. i 2 c/smbus ? timing setup and hold times timing diagram the setup time, t set , is the time data, sda, must be stable before the rising edge of the clock signal, scl. the hold time t hold , is the time data, sda, must be stable after the rising edge of the clock signal, scl. if these times are violated incorrect data may be captured or meta-stability may occur and the bus communication may fail. when configuring the product, all standard smbus protocols must be followed, including clock www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 27 of 36 cui inc model : nqb description : fully regulated advanced bus converters stretching. additionally, a bus-free time delay between every smbus transmission (between every stop & start condition) must occur. refer to the smbus specification, for smbus electrical and timing requirements. note that an additional delay of 5 ms has to be inserted in case of storing the ram content into the internal non-volatile memory. pmbus commands the products are pmbus compliant. the following table lists the implemented pmbus read commands. for more detailed information see pmbus power system management protocol specification; part i C general requirements, transport and electrical interface and pmbus power system management protocol; part ii C command language. designation cmd prot standard pmbus commands &rqwuro&rppdqgv o n h 1 0 n o i t a r e p o o n h 2 0 g i f n o c _ f f o _ n o o n h 0 1 t c e t o r p _ e t i r w output commands o n h 0 2 e d o m _ t u o v o n h 1 2 d n a m m o c _ t u o v o n h 2 2 m i r t _ t u o v s e y h 3 2 t e s f f o _ l a c _ t u o v o n h 4 2 x a m _ t u o v o n h 5 2 h g i h _ n i g r a m _ t u o v o n h 6 2 w o l _ n i g r a m _ t u o v vout_transition_rate 27h no s e y h 9 2 p o o l _ e l a c s _ t u o v vout_scale_monitor 2ah yes o n h 2 3 y t u d _ x a m frequency_switch 33h no o n h 5 3 n o _ n i v o n h 6 3 f f o _ n i v s e y h 8 3 n i a g _ l a c _ t u o i s e y h 9 3 t e s f f o _ l a c _ t u o i fault commands vout_ov_fault_limit 40h no vout_ov_fault_response 41h no vout_ov_warn_limit 42h no vout_uv_warn_limit 43h no vout_uv_fault_limit 44h no vout_uv_fault_response 45h no iout_oc_fault_limit 46h no designation cmd prot iout_oc_fault_response 47h no iout_oc_lv_fault_limit 48h no iout_oc_warn_limit 4ah no o n h f 4 t i m i l _ t l u a f _ t o ot_fault_response 50h no o n h 1 5 t i m i l _ n r a w _ t o o n h 2 5 t i m i l _ n r a w _ t u o n h 3 5 t i m i l _ t l u a f _ t u ut_fault_response 54h no o n h 5 5 t i m i l _ t l u a f _ v o _ n i v vin_ov_fault_response 56h no o n h 7 5 t i m i l _ n r a w _ v o _ n i v o n h 8 5 t i m i l _ n r a w _ v u _ n i v o n h 9 5 t i m i l _ t l u a f _ v u _ n i v vin_uv_fault_response 5ah no o n h e 5 n o _ d o o g _ r e w o p o n h f 5 f f o _ d o o g _ r e w o p time setting commands o n h 0 6 y a l e d _ n o t o n h 1 6 e s i r _ n o t ton_max_fault_limit 62h no ton_max_fault_response 63h no o n h 4 6 y a l e d _ f f o t o n h 5 6 l l a f _ f f o t toff_max_warn_limit 66h no status commands (read only) o n h 3 0 s t l u a f _ r a e l c o n h 8 7 s e t y b _ s u t a t s o n h 9 7 d r o w _ s u t a t s o n h a 7 t u o v _ s u t a t s o n h b 7 t u o i _ s u t a t s o n h c 7 t u p n i _ s u t a t s status_temperature 7dh no status_cml 7eh no o n h f 7 r e h t o _ s u t a t s monitior commands (read only) o n h 8 8 n i v _ d a e r o n h b 8 t u o v _ d a e r o n h c 8 t u o i _ d a e r read_temperature_1 8dh no read_temperature_2 8eh no o n h 4 9 e l c y c _ y t u d _ d a e r www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 28 of 36 cui inc model : nqb description : fully regulated advanced bus converters designation cmd prot o n h 5 9 y c n e u q e r f _ d a e r configuration and control commands r 1 k % $ 7 $ ' 5 ( 6 8 identification commands (read only) o n h 8 9 n o i s i v e r _ s u b m p s e y h 9 9 d i _ r f m s e y h a 9 l e d o m _ r f m s e y h b 9 n o i s i v e r _ r f m s e y h c 9 n o i t a c o l _ r f m s e y h d 9 e t a d _ r f m s e y h e 9 l a i r e s _ r f m supervisory commands store_default_all 11h yes restore_default_all 12h no o n h 5 1 l l a _ r e s u _ e r o t s o n h 6 1 l l a _ r e s u _ e r o t s e r o n h 9 1 y t i l i b a p a c product specific commands mfr_power_good_polarity d0h no mfr_vin_scale_monitor d3h yes mfr_select_temp_sensor dch no s e y h d d t e s f f o _ n i v _ r f m mfr_vout_offset_monitor deh yes mfr_temp_offset_int e1h no mfr_remote_temp_cal e2h no o n h 3 e l r t c _ e t o m e r _ r f m mfr_dead_band_delay e5h yes s e y h 7 e f f e o c _ p m e t _ r f m o n h 0 f f f u b _ g u b e d _ r f m mfr_setup_password f1h no mfr_disable_security_once f2h no mfr_dead_band_iout_threshold f3h yes mfr_security_bit_mask f4h yes s e y h 5 f n r u t _ y r a m i r p _ r f m mfr_secondary_turn f6h yes mfr_ilim_softstart f8h no mfr_multi_pin_config f9h no mfr_dead_band_vin_threshold fah yes mfr_dead_band_vin_iout_hys fbh yes o n h e f t r a t s e r _ r f m notes: cmd, is short for command. prot, is short for commands that are protected with security mask. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 29 of 36 cui inc model : nqb description : fully regulated advanced bus converters mechanical information - hole mount, open frame version www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 30 of 36 cui inc model : nqb description : fully regulated advanced bus converters mechanical information - hole mount, base plate version www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 31 of 36 cui inc model : nqb description : fully regulated advanced bus converters mechanical information - surface mount version www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 32 of 36 cui inc model : nqb description : fully regulated advanced bus converters soldering information - surface mounting the surface mount product is intended for forced convection or vapor phase reflow soldering in snpb and pb-free processes. the reflow profile should be optimised to avoid excessive heating of the product. it is recommended to have a sufficiently extended preheat time to ensure an even temperature across the host pwb and it is also recommended to minimize the time in reflow. a no-clean flux is recommended to avoid entrapment of cleaning fluids in cavities inside the product or between the product and the host board, since cleaning residues may affect long time reliability and isolation voltage. general reflow process specifications snpb eutectic pb-free average ramp-up (t product ) 3c/s max 3c/s max typical solder melting (liquidus) temperature t183c l 221c minimum reflow time above t l 60 s 60 s minimum pin temperature t 210c pin 235c peak product temperature t 225c product 260c average ramp-down (t product ) 6c/s max 6c/s max maximum time 25c to peak 6 minutes 8 minutes t product maximum t pin minimum t i m e n i p profile product profile t l time in reflow time in preheat / soak zone time 25c to peak t e m p e r a t u r e minimum pin temperature recommendations pin number 5 chosen as reference location for the minimum pin temperature recommendation since this will likely be the coolest solder joint during the reflow process. snpb solder processes for snpb solder processes, a pin temperature (t pin ) in excess of the solder melting temperature, (t l , 183c for sn63pb37) for more than 60 seconds and a peak temperature of 220c is recommended to ensure a reliable solder joint. for dry packed products only: depending on the type of solder paste and flux system used on the host board, up to a recommended maximum temperature of 245c could be used, if the products are kept in a controlled environment (dry pack handling and storage) prior to assembly. lead-free (pb-free) solder processes for pb-free solder processes, a pin temperature (t pin ) in excess of the solder melting temperature (t l , 217 to 221c for snagcu solder alloys) for more than 60 seconds and a peak temperature of 245c on all solder joints is recommended to ensure a reliable solder joint. maximum product temperature requirements top of the product pwb near pin 2 is chosen as reference location for the maximum (peak) allowed product temperature (t product ) since this will likely be the warmest part of the product during the reflow process. snpb solder processes for snpb solder processes, the product is qualified for msl 1 according to ipc/jedec standard j-std-020c. during reflow t product must not exceed 225 c at any time. pb-free solder processes for pb-free solder processes, the product is qualified for msl 3 according to ipc/jedec standard j-std-020c. during reflow t product must not exceed 260 c at any time. dry pack information products intended for pb-free reflow soldering processes are delivered in standard moisture barrier bags according to ipc/jedec standard j-std-033 (handling, packing, shipping and use of moisture/reflow sensitivity surface mount devices). using products in high temperature pb-free soldering processes requires dry pack storage and handling. in case the products have been stored in an uncontrolled environment and no longer can be considered dry, the modules must be baked according to j-std-033. thermocoupler attachment top of pwb near pin 2 for measurement of maximum product temperature, t product pin 5 for measurement of minimum pin (solder joint) temperature, t pin www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 33 of 36 cui inc model : nqb description : fully regulated advanced bus converters soldering information - hole mounting the hole mounted product is intended for plated through hole mounting by wave or manual soldering. the pin temperature is specified to maximum to 270c for maximum 10 seconds. a maximum preheat rate of 4c/s and maximum preheat temperature of 150c is suggested. when soldering by hand, care should be taken to avoid direct contact between the hot soldering iron tip and the pins for more than a few seconds in order to prevent overheating. a no-clean flux is recommended to avoid entrapment of cleaning fluids in cavities inside the product or between the product and the host board. the cleaning residues may affect long time reliability and isolation voltage. delivery package information the products are delivered in antistatic injection molded trays (jedec design guide 4.10d standard) and in antistatic trays. tray specifications C smd material antistatic ppe surface resistance 10 5 < ohm/square < 10 bakability 12 the trays can be baked at maximum 125c for 48 hours tray thickness 14.50 mm 0.571 [ inch] box capacity 20 products (2 full trays/box) tray weight 125 g empty, 574 g full tray jedec standard tray for 2x5 = 10 products. all dimensions in mm [inch] tolerances: x.x 0.26 [0.01], x.xx 0.13 [0.005] note: pick up positions refer to center of pocket. see mechanical drawing for exact location on product. www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 34 of 36 cui inc model : nqb description : fully regulated advanced bus converters resistance bakability the trays are not bakeable tray capacity 20 converters/tray box capacity 20 products (1 full tray/box) weight product C open frame 1100 g full tray, 140g empty tray product C base plate option 1480 g full tray, 140 g empty tray tray specifications - th material pe foam surface 10 5 < ohm/square < 10 12 www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui .com date 10/10/2012 page 35 of 36 cui inc model : nqb description : fully regulated advanced bus converters product qualification specification characteristics external visual inspection ipc-a-610 change of temperature (temperature cycling) iec 60068-2-14 na temperature range number of cycles dwell/transfer time -40 to 100c 500 15 min/0-1 min cold (in operation) iec 60068-2-1 ad temperature t duration a -45c 72 h damp heat iec 60068-2-67 cy temperature humidity duration 85c 85 % rh 1000 hours dry heat iec 60068-2-2 bd temperature duration 125c 1000 h electrostatic discharge susceptibility iec 61340-3-1, jesd 22-a114 iec 61340-3-2, jesd 22-a115 human body model (hbm) machine model (mm) class 2, 2000 v class 3, 200 v immersion in cleaning solvents iec 60068-2-45 xa, method 2 water glycol ether isopropyl alcohol 55c 35c 35c mechanical shock iec 60068-2-27 ea peak acceleration duration 100 g 6 ms moisture reflow sensitivity j-std-020c 1 level 1 (snpb-eutectic) level 3 (pb free) 225c 260c operational life test mil-std-202g, method 108a duration 1000 h resistance to soldering heat iec 60068-2-20 tb, method 1a 2 solder temperature duration 270c 10-13 s robustness of terminations iec 60068-2-21 test ua1 iec 60068-2-21 test ue1 through hole mount products surface mount products all leads all leads solderability iec 60068-2-58 test td 1 iec 60068-2-20 test ta preconditioning 2 temperature, snpb eutectic temperature, pb-free preconditioning temperature, snpb eutectic temperature, pb-free 150c dry bake 16 h 215c 235c steam ageing 235c 245c vibration, broad band random iec 60068-2-64 fh, method 1 frequency spectral density duration 10 to 500 hz 0.07 g 2 10 min in each direction /hz notes 1 only for products intended for reflow soldering (surface mount products) 2 only for products intended for wave soldering (plated through hole products) www.datasheet.net/ datasheet pdf - http://www..co.kr/
cui inc model : nqb description : fully regulated advanced bus converters date 10/10/2012 page 36 of 36 novum is a trademark of cui. pmbus is a trademark of smif, inc. all other trademarks are the property of their respective owners. cui offers a two (2) year limited warranty. complete warranty information is listed on our website. cui reserves the right to make changes to the product at any time without notice. information provided by cui is believed to b e accurate and reliable. however, no responsibility is assumed by cui for its use, nor for any infringements of patents or other rights of third parties which may result from its use . cui products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. headquarters 20050 sw 112th ave. tualatin, or 97062 800.275.4899 fax 503.612.2383 cui .com techsupport@cui.com rev. description date 0.9 preliminary release 10/10/2012 the revision history provided is for informational purposes only and is believed to be accurate. revision history www.datasheet.net/ datasheet pdf - http://www..co.kr/

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