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c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 1 a n p e c r e s e r v e s t h e r i g h t t o m a k e c h a n g e s t o i m p r o v e r e l i a b i l i t y o r m a n u f a c t u r a b i l i t y w i t h o u t n o t i c e , a n d a d v i s e c u s t o m e r s t o o b t a i n t h e l a t e s t v e r s i o n o f r e l e v a n t i n f o r m a t i o n t o v e r i f y b e f o r e p l a c i n g o r d e r s . s y s t e m p o w e r p w m c o n t r o l l e r f o r n o t e b o o k c o m p u t e r s f e a t u r e s g e n e r a l d e s c r i p t i o n b u i l t i n 2 p w m c o n t r o l l e r i n t o s i n g l e c h i p high input battery voltage range from 5.5v to 28v f i x e d 1 . 0 m h z s w i t c h i n g f r e q u e n c y f o r i n d i v i d u a l c h a n n e l b u i l t i n p r o g r a m m a b l e i n d u c t o r d c r s e n s e f o r i n d u c t o r c u r r e n t s e n s e f u n c t i o n b u i l t i n c u r r e n t m o d e c o n t r o l w i t h f u l l y s u p p o r t m l c c o u t p u t c a p a c i t o r b u i l t i n 1 8 0 d e g r e e s p h a s e s h i f t f u n c t i o n b u i l t i n p w m / p s m / u l t r a s o n i c p f m ( 2 5 k h z ) c o n t r o l s c h e m e s b u i l t i n i n t e r n a l 5 v / 1 7 5 m a a n d 3 . 3 v / 5 0 m a l i n e a r r e g u l a t o r s 0 . 5 v r e f e r e n c e v o l t a g e b u i l t i n d i g i t a l s o f t - s t a r t l a t c h o f f m o d e f o r b o t h c h a n n e l s o v e r - t e m p e r a t u r e p r o t e c t i o n b u i l t i n s y s p o k r e p o r t f u n c t i o n f o r 2 p w m c h a n n e l s a v a i l a b l e i n t q f n 4 x 4 - 2 4 a n d q f n 3 x 3 - 2 0 p a c k a g e h a l o g e n a n d l e a d f r e e a v a i l a b l e ( r o h s c o m p l i a n t ) a p p l i c a t i o n s n b the APW8820 offers a compact power supply solution to provide 2 voltages required by notebook application. the 2 pwm controllers use current-mode scheme with phase shift 180 degrees control scheme allow to use mlcc output capacitors. the higher fixed 1mhz switching fre- quency allows to use thin and small filtered components. the APW8820 provides good transient response and accurate dc output voltage in either psm or pwm mode. in pulse skipping modulation mode (psm), the APW8820 provides high efficiency over light to heavy loads with load- ing modulated switching frequencies. the unique ultra- sonic mode maintains the switching frequency above 25khz, which eliminates noise in audio applications. the APW8820 built in individual enable control input on 2 chan- nels for flexible power sequence adjustment. the power- good outputs (syspok) indicate the operating mode of the pwmx. the APW8820 has been equipped with excellent protec- tion functions: power-on-reset (por), over-current pro- tection (ocp), over-voltage protection ovp, under-volt- age protection (uvp) and over-temperature protection (otp) to prevent the device operate under abnormal con- dition or adjacent pin shortage. the APW8820 is available in tqfn4x4-24 and qfn3x3- 20 package. s i m p l i f i e d a p p l i c a t i o n c i r c u i t apw 8820 v in / 5 . 5 v ~ 28 v 5 v pwm 5 controller 3 . 3 v ldo 3 ldo 5 phase shift pwm 3 controller 5 v / 17 5 ma 3 . 3 v / 50 ma free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 2 o r d e r i n g a n d m a r k i n g i n f o r m a t i o n n o t e : a n p e c l e a d - f r e e p r o d u c t s c o n t a i n m o l d i n g c o m p o u n d s / d i e a t t a c h m a t e r i a l s a n d 1 0 0 % m a t t e t i n p l a t e t e r m i n a t i o n f i n i s h ; w h i c h a r e f u l l y c o m p l i a n t w i t h r o h s . a n p e c l e a d - f r e e p r o d u c t s m e e t o r e x c e e d t h e l e a d - f r e e r e q u i r e m e n t s o f i p c / j e d e c j - s t d - 0 2 0 d f o r m s l c l a s s i f i c a t i o n a t l e a d - f r e e p e a k r e f l o w t e m p e r a t u r e . a n p e c d e f i n e s ? g r e e n ? t o m e a n l e a d - f r e e ( r o h s c o m p l i a n t ) a n d h a l o g e n f r e e ( b r o r c l d o e s n o t e x c e e d 9 0 0 p p m b y w e i g h t i n h o m o g e n e o u s m a t e r i a l a n d t o t a l o f b r a n d c l d o e s n o t e x c e e d 1 5 0 0 p p m b y w e i g h t ) . apw 8820 handling code temperature range package code assembly material apw 8820 qb : xxxxx - date code package code qb : tqfn 4 x 4 - 24 qa : qfn 3 x 3 - 20 operating ambient temperature range i : - 40 to 85 o c handling code tr : tape & reel assembly material g : halogen and lead free device apw 8820 xxxxx apw 8820 qa : xxxxx - date code apw 8820 xxxxx p i n c o n f i g u r a t i o n csp 5 fb 5 comp 5 / sd comp 3 / sd fb 3 c s n 3 g n d u g a t e 3 lgate 5 nc ldo 5 ldo 3 vin csp 3 lgate 3 ( exposed pad ) gnd 17 16 15 14 13 18 2 3 4 5 6 1 23 22 21 20 19 24 8 9 10 11 12 7 tqfn 4 x 4 - 24 top view e n l d o p h a s e 3 b o o t 3 b o o t 5 u g a t e 5 c s n 5 b y p s y s p o k p h a s e 5 fb 5 comp 3 / sd comp 5 / sd fb 3 c s n 5 p h a s e 3 s y s p o k c s n 3 p h a s e 5 b o o t 5 u g a t e 3 lgate 5 ldo 5 b o o t 3 vin 6 1 0 9 8 7 2 0 1 6 1 7 1 8 1 9 c s p 3 5 1 2 3 4 11 15 14 13 12 ldo 3 lgate 3 u g a t e 5 csp 5 ( exposed pad ) gnd qfn 3 x 3 - 20 top view free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 3 a b s o l u t e m a x i m u m r a t i n g s ( n o t e 1 ) symbol parameter rating unit v in input bias supply voltage ( vin to gnd) - 0.3 ~ 30 v v ldox ldox supply voltage (ldox to gnd) - 0.3 ~ 7 v v bootx to v phasex - 0.3 ~ 7 v v bootx vbootx supply voltage v bootx to gnd - 0.3 ~ 37 v <20 ns pulse width - 5 ~ v bootx + 5 v ugatex to phasex voltage >20ns pulse width - 0.3 ~ v bootx +0.3 v <20ns pulse width - 5 ~ 9 v lgatex to gnd voltage >20ns pulse width - 0.3 ~ 7 v <20ns pulse width - 10 ~ 37 v phasex to gnd voltage >20ns pulse width - 0. 3 ~ v in +0.3 v input/o utput to gnd voltage (fbx, csnx , cspx, compx, byp, syspok, enldo) - 0.3 ~ 7 v p d power dissipation internally limit w t j maximum junction temperature 150 o c t stg storage temperature - 65 ~ 150 o c t sdr maximum lead soldering temperature (10 seconds ) 26 0 o c note1: stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. these are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recom- mended operating conditions" is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability t h e r m a l c h a r a c t e r i s t i c s symbol parameter typical value unit q ja junction - to - ambient resistance in free air (note 2) tqfn4x4 - 24 qfn3x3 - 20 41 50 o c/w q jc case - to - ambient resistance in free air (note 2) tqfn4x4 - 24 qfn3x3 - 20 9 12 o c/w note 2: q ja is measured with the component mounted on a high effective thermal conductivity test board in free air. symbol parameter range unit v in input bias supply voltage ( vin to gnd) 5 .5 ~ 28 v v out5 5v pwm converter output voltage 0.5 ~ 5.5 v v out3 3.3v pwm converter output voltage 0.5 ~ 5.5 v c in input power capacitor 4.7 ~ m f c ldo5 ldo5 output capacitor 4.7 ~ m f t a ambient temperature - 40 ~ 85 o c t j junction temperature - 4 0 ~ 125 o c r e c o m m e n d e d o p e r a t i n g c o n d i t i o n s ( n o t e 3 ) note 3: refer to the typical application circuit. free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 4 e l e c t r i c a l c h a r a c t e r i s t i c s apw 8820 symbol parameter test conditions min typ max unit supply current v in input voltage range 5 .5 - 28 v i vin vin supply current ugatex and lgatex open - 200 400 m a vin shutdown input current compx=gnd, enldo=gnd - 3 0 50 m a power - on - reset (p or) thresholds v in rising vin voltage 4.1 4.2 4.3 v vin por hysteresis 0.05 0.1 0.15 v rising ldo5 voltage 4.1 4.2 4.3 v ldo5 por hysteresis 0.05 0.1 0.15 v reference voltage (fb5, fb3) v in =5 .5 v~28v - 0.5 - v v fbx regulated voltage over tem perature range - 1.5 - + 1.5 % output voltage accuracy (note 4) i out = 0.3a ~ 8a, v in =6v~28v - 0.2 - +0.2 % i fbx fbx input current - 50 - 50 na ldo5 and ldo3 ldo5 voltage vin=5.5v ~ 28v, byp=gnd 4.90 5.00 5.10 v ldo5 current limit vin=5.5v ~ 28v, byp= gnd 1 7 5 - 330 ma byp threshold voltage v byp rising 4.53 4.68 4.83 v ldo5 to byp switch on resistor - 1.5 2.5 w v in >4.5v, i load =0ma 3.235 3.300 3.365 v ldo3 voltage v in <4.0v, i load =0ma 3.220 3.300 3.380 v ldo3 load regulation i load =0 ~ 50ma - 30 - mv oscillator v in =5 .5 v ~ 28v, t a = 25 o c 0.9 1.0 1.1 mhz f osc switching frequency at pwm mode (pwm5 & pwm3) v in =5 .5 v ~ 28v, t a = - 40~85 o c - 15 - 15 % f osc_mi switching frequency at ultra - sonic mode v in =5 .5 v ~ 28v 20 25 - khz dead - time (note 4) - 2 5 - ns pwm gate driver ugatex source current v bootx = 5v, v ugatex - phasex =2.5v - 0.5 - a ugatex sink current v bootx = 5v, v ugatex - phasex =2.5v - 0.5 - a lgatex source current v pvcc =5v, v lgatex =2.5v - 0.5 - a lgatex sink current v pvcc =5v, v lgatex =2.5 v - 0.5 - a duty cycle 0 - 100 % minimum on - time - 100 - ns zero crossing voltage threshold - 5 - +5 mv u n l e s s o t h e r w i s e s p e c i f i e d , t h e s e s p e c i f i c a t i o n s a p p l y o v e r v i n = 1 9 v a n d t a = 2 5 o c . free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 5 e l e c t r i c a l c h a r a c t e r i s t i c s ( c o n t . ) apw 8820 symbol parameter test conditions min typ max unit current sense i cspx cspx pin input current v cspx = 5v - 100 - +100 n a i csnx csnx pin input current v csnx = 5v - 100 - +100 n a bootstrap switch v f forward voltage v ldo5 ? v bootx - gnd , i f = 10m a - 0.5 0.8 v i r reverse leakage v bootx - gnd = 30v, v phasex = 25v, v ldo5 = 5v - - 1 m a current mode pwm control gm error amplifier transconductance (note 4) v in =5 .5 v ~ 28v - 640 - m a/v open - loop gain (note 4) r l = 10k w , c l =10pf - 80 - db open - loop b andwidth (note 4) r l = 10k w , c l = 10pf - 20 - mhz fb input leakage current v fb = 0.8v - 0.1 1 m a comp high voltage - 3 - v comp low voltage - 0.5 - v comp source current v comp = 2v - 100 - m a comp sink current v comp = 2v - 100 - m a enable cont rol shutdown threshold - - 0.4 v enldo input voltage enable threshold 2.4 - - v pwm shutdown threshold compx threshold - - 0.4 5 v internal soft - start t ss soft - start interval - 1 - ms syspok control fb5 and fb3 rising 87 90 93 % syspok threshold fb5 or fb3 falling - 5 - % syspok propagation delay fb5/fb3 falling & rising - 10 - m s syspok low voltage i sink =4ma - 0.1 0.2 v syspok leakage current v syspok =5v - - 1 m a pwm5 fault detected i pwmpok =5ma (sink) 90 120 150 w r syspok pwm3 fault detected i pwmpok =5ma (sink) 45 60 75 w protection for pwmx ovp rising threshold 115 120 125 % uvp falling threshold 65 70 75 % i ocsetx ocsetx current source 9 10 11 m a over - temperature protection rising threshold - 160 - o c u n l e s s o t h e r w i s e s p e c i f i e d , t h e s e s p e c i f i c a t i o n s a p p l y o v e r v i n = 1 9 v a n d t a = 2 5 o c . note 4: grauantee by design, not production test. free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 6 t y p i c a l o p e r a t i n g c h a r a c t e r i s t i c s s h u t d o w n i n p u t v o l t a g e , i s d ( u a ) supply voltage , v in ( v ) shutdown input current vs . supply voltage 0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 l d o 5 o u t p u t v o l t a g e , v l d o 5 ( v ) supply voltage , v in ( v ) ldo 5 output voltage vs . supply voltage 4 . 90 4 . 92 4 . 94 4 . 96 4 . 98 5 . 00 5 . 02 0 5 10 15 20 25 l d o 3 o u t p u t v o l t a g e , v l d o 3 ( v ) ldo 3 load current , i ldo 3 ( ma ) ldo 3 output voltage vs . load current 3 . 25 3 . 26 3 . 27 3 . 28 3 . 29 3 . 30 3 . 31 3 . 32 0 10 20 30 40 50 60 70 80 l d o 5 o u t p u t v o l t a g e , v l d o 5 ( v ) ldo 5 load current , i ldo 5 ( ma ) ldo 5 output voltage vs . load current 4 . 0 4 . 1 4 . 2 4 . 3 4 . 4 4 . 5 4 . 6 4 . 7 4 . 8 4 . 9 5 . 0 5 . 1 0 50 100 150 200 p w m 3 o u t p u t v o l t a g e , v o u t 3 ( v ) pwm 3 load current , i out 3 ( a ) pwm 3 output voltage vs . load current 3 . 26 3 . 27 3 . 28 3 . 29 3 . 30 3 . 31 3 . 32 0 2 4 6 8 10 12 v in = 7 v v in = 19 v p w m 5 o u t p u t v o l t a g e , v o u t 5 ( v ) pwm 5 load current , i out 5 ( a ) pwm 5 output voltage vs . load current 4 . 96 4 . 97 4 . 98 4 . 99 5 . 00 5 . 01 5 . 02 5 . 03 0 1 2 3 4 5 6 7 8 v in = 19 v v in = 7 v free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 7 o p e r a t i n g w a v e f o r m s r e f e r t o t h e t y p i c a l a p p l i c a t i o n c i r c u i t . t h e t e s t c o n d i t i o n i s v i n = 1 9 v , t a = 2 5 o c u n l e s s o t h e r w i s e s p e c i f i e d . 1 4 2 3 time : 0 . 5 ms / div enable pwm 5 i in , 0 . 5 a / div v comp 5 / sd , 0 . 5 v / div v syspok v out 5 , 2 v / div 1 4 2 3 time : 0 . 5 ms / div enable pwm 3 v comp 3 / sd , 0 . 5 v / div v out 3 , 2 v / div v syspok i in , 0 . 5 a / div 1 2 time : 20 m s / div load transient response of pwm 5 4 a 1 a i out 5 , 2 a / div v out 5 , 0 . 2 v / div , ac v in = 19 v 1 2 load transient response of pwm 5 time : 20 m s / div 4 a 1 a i out 5 , 2 a / div v out 5 , 0 . 2 v / div , ac v in = 7 v free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 8 o p e r a t i n g w a v e f o r m s r e f e r t o t h e t y p i c a l a p p l i c a t i o n c i r c u i t . t h e t e s t c o n d i t i o n i s v i n = 1 9 v , t a = 2 5 o c u n l e s s o t h e r w i s e s p e c i f i e d . 1 2 load transient response of pwm 3 4 a 1 a i out 3 , 2 a / div v out 3 , 0 . 1 v / div , ac v in = 19 v time : 20 m s / div load transient response of pwm 3 1 2 4 a 1 a i out 3 , 2 a / div v out 3 , 0 . 1 v / div , ac v in = 7 v time : 20 m s / div free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 9 p i n d e s c r i p t i o n pin tqfn4x4 - 24 qfn3x3 - 20 name f unction 1 1 csp5 positive input of current sensing amplifier for pwm5 . this pin combined with csn 5 senses the inductor current through an rc network. 2 2 fb5 feedback input of pwm5 . the converter senses feedback voltage v ia fb 5 and regulates the fb 5 voltage at 0. 5 v. connecting fb 5 with a resistor - divider from the output sets the output voltage of the converter. 3 3 comp5/sd this is a multiplexed pin. during the soft - start and normal converter operation, this pin represent s the output of the error amplifier. it is used to compensate the regulation control loop in combination with the fb 5 pin. pulling comp 5/sd low (v disable =0.4v) will shut down the pwm5 . once the pull - down device is released, the comp 5/sd pin will start to r ise. after the comp 5/sd pin exceeds the v disable trip point, the pwm5 will begin a new initialization and soft - start cycle. 4 4 comp3/sd this is a multiplexed pin. during the soft - start and normal converter operation, this pin represents the output of the error amplifier. it is used to compensate the regulation control loop in combination with the fb 3 pin. pulling comp 3/sd low (v disable =0.4v) will shut down the pwm3 . once the pull - down device is released, the comp 3/sd pin will start to rise. after the comp 3/sd pin exceeds the v disable trip point, the pwm3 will begin a new initialization and soft - start cycle. 5 5 fb3 feedback input of pwm3 . the converter senses feedback voltage via fb 3 and regulates the fb 3 voltage at 0. 5 v. connecting fb 3 with a resistor - di vider from the output sets the output voltage of the converter. 6 6 csp3 positive input of current sensing amplifier for pwm3 . this pin combined with csn 3 senses the inductor current through an rc network. 7 7 csn3 positive input of current sensing ampli fier for pwm3 . this pin combined with csn 3 senses the inductor current through an rc network. 8 - gnd signal and power ground. connected this pin to exposed pad. 9 - enldo enable pin of ldo5/3. forcing this pin above 2.4 v enables the ldo5/3 , or pulling t his pin below 0.4v to shut it down. do not leave this pin floating. 10 8 phase3 this pin is the return path for the high - side gate driver of pwm 3 . connecting this pin to the high - side mosfet source and connecting a capacitor to boot3 for the bootstrap vol tage. 11 9 ugate3 high - side gate driver output of pwm 3 . this pin is connected to high - side mosfet. 12 10 boot3 this pin provides the bootstrap voltage to the high - side gate driver of pwm3 for driving the n - channel mosfet. an external capacitor connected from phase 3 to boot 3 is required for the high - side gate driver. 13 11 lgate3 low - side gate driver output of pwm 3 . this pin is the gate driver for low - side mosfet. 14 12 vin power supply input. connect a nominal 5v to 2 8 v power supply voltage to this pin. a power - on - reset function monitors the input voltage at this pin. it is recommended that a decoupling capacitor (1 to 10 m f) be connected to gnd for noise decoupling. 15 13 ldo3 internal 3.3v ldo output. 16 14 ldo5 power supply of internal gate drivers. when v byp below 4.68v, the ldo5 internally connect to internal ldo. when v byp exceeds 4.68v, an internal switch connects ldo5 to byp. 17 - nc no internal connection. 18 15 lgate5 low - side gate driver output of pwm5. this pin is the gate driver for low - side mosfet. 19 16 boot5 this pin provides the bootstrap voltage to the high - side gate driver of pwm5 for driving the n - ch annel mosfet. an external capacitor connected from phase5 to boot5 is required for the high - side gate driver. 20 17 ugate5 high - side gate driver output of pwm5. this pin is connected to high - side mosfet. free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 1 0 p i n d e s c r i p t i o n ( c o n t . ) pin tqfn4x4 - 24 qfn3x3 - 20 name f unction 21 18 phase5 this pin is the return path for the high - side gate driver of pwm5. connecting this pin to the high - side mosfet source and connecting a capacitor to boot5 for the bootstrap voltage. 22 19 syspok pwm5 a nd pwm3 power good output indicator. this pin used to indicate the status of the pwm5 and pwm3. if an fault even detected on fb5, this pin represents a 1 0 0 [ resistance. if an fault even detected on fb3, this pin represents a 45 [ resistance. once the v fb5 and v fb3 exceed 90% of reference voltage and operate normally, this pin represents high impedance. 23 - byp bypass this pin to ldo5 . once v byp exceeds 4.68 v, an internal switch connects byp to ldo5 . connecting this pin to output of pwm5. 24 20 csn5 negative input of current sensing amplifier for pwm5 . this pin combined with csp5 senses the inductor current through an rc network. exposed pad exposed pad gnd signal and power ground. free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 1 1 b l o c k d i a g r a m csp 5 boot 5 phase 5 fb 5 soft - start + + pwm comparator logic control 5 gate driver error amplifier gnd ldo 5 gate driver 0 . 5 v q 2 q 1 csn 5 ldo 5 comp 5 / sd ugate 5 lgate 5 slope compe n - sation csp 3 boot 3 phase 3 fb 3 soft - start + + pwm comparator logic control 3 gate driver error amplifier gnd ldo 5 gate driver 0 . 5 v q 4 q 3 csn 3 ldo 5 comp 3 / sd ugate 3 lgate 3 slope compe n - sation phase shift 1 mhz oscill - ator 0 . 5 v under - voltage comparator over - voltage comparator 0 . 5 v 0 . 5 v under - voltage comparator over - voltage comparator x 0 . 7 0 . 5 v x 0 . 7 x 1 . 25 byp ldo 5 vin syspok pwm 5 pok pwm 3 pok 3 . 3 v ldo 3 gm gm vin por ldo icmp 3 icmp 5 x 1 . 25 4 . 68 v ( typ .) enldo free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 1 2 t y p i c a l a p p l i c a t i o n c i r c u i t ugate 3 boot 3 phase 3 lgate 3 csn 3 csp 3 fb 3 comp 3 / sd ugate 5 boot 5 phase 5 lgate 5 csn 5 csp 5 fb 5 comp 5 / sd v in v out 5 5 v / 7 a v out 3 3 . 3 v / 11 a c 1 4 . 7 g f q 1 apm 4810 c 9 10 nf l 1 1 g h q 2 apm 4810 r 9 10 k c 11 / 1 nf c 7 0 . 1 g f r 2 9 . 1 k r 1 82 k r 11 / 10 k c 13 / nc q 3 apm 4810 l 2 1 g h q 4 apm 4810 r 10 10 k c 12 / 1 nf c 8 0 . 1 g f r 4 10 k r 3 56 k r 12 / 10 k c 14 / nc c 10 10 nf r 7 18 k r 8 18 k c 5 22 g f c 6 22 g f c 4 22 g f c 3 22 g f vin vin v in byp syspok enldo ldo 3 ldo 5 5 v 17 5 ma on off 3 . 3 v 50 ma c 16 1 g f c 15 4 . 7 g f v out 5 syspok sdpwm 3 sdpwm 5 gnd c 2 4 . 7 g f cff 5 ( option ) cff 3 ( option ) free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 1 3 f u n c t i o n d e s c r i p t i o n the APW8820 integrate 2 pwm controllers and two ldo with 175ma source capability. p s m / p w m a t l i g h t l o a d s , t h e i n d u c t o r c u r r e n t m a y r e a c h z e r o o r r e - v e r s e o n e a c h p u l s e . t h e b o t t o m m o s f e t i s t u r n e d o f f b y t h e c u r r e n t r e v e r s a l c o m p a r a t o r , t h e s w i t c h v o l t a g e w i l l r i n g . t h i s i s d i s c o n t i n u o u s m o d e o p e r a t i o n , a n d i s n o r - m a l b e h a v i o r f o r t h e s w i t c h i n g r e g u l a t o r . a t v e r y l i g h t l o a d s , t h e a p w 8 8 2 0 w i l l a u t o m a t i c a l l y s k i p p u l s e s i n p u l s e s k i p - p i n g m o d e o p e r a t i o n t o m a i n t a i n o u t p u t r e g u l a t i o n . p w m x c o n t r o l l o o p t h e a p w 8 8 2 0 i s a c o n s t a n t f r e q u e n c y , s y n c h r o n o u s r e c - t i f i e r a n d c u r r e n t - m o d e s w i t c h i n g c o n t r o l l e r s . i n n o r m a l o p e r a t i o n , t h e h i g h s i d e p o w e r m o s f e t i s t u r n e d o n e a c h c y c l e . t h e p e a k i n d u c t o r c u r r e n t a t w h i c h i c m p x t u r n o f f t h e h i g h s i d e m o s f e t i s c o n t r o l l e d b y t h e v o l t a g e o n t h e c o m p x n o d e , w h i c h i s t h e o u t p u t o f t h e e r r o r a m p l i f i e r ( e a m p x ) . a n e x t e r n a l r e s i s t i v e d i v i d e r c o n n e c t e d b e t w e e n v o u t x a n d g r o u n d a l l o w s t h e e a m p x t o r e c e i v e a n o u t p u t f e e d b a c k v o l t a g e v f b x a t f b x p i n . w h e n t h e l o a d c u r r e n t i n c r e a s e s , i t c a u s e s a s l i g h t l y d e c r e a s e i n v f b x r e l a t i v e t o t h e r e f e r e n c e v o l t a g e ( 0 . 5 v t y p i c a l ) , w h i c h i n t u r n c a u s e s t h e c o m p x v o l t a g e t o i n c r e a s e u n t i l t h e a v e r a g e i n d u c t o r c u r r e n t m a t c h e s t h e n e w l o a d c u r r e n t . p o w e r - o n - r e s e t a p o w e r - o n - r e s e t ( p o r ) f u n c t i o n i s d e s i g n e d t o p r e v e n t w r o n g l o g i c c o n t r o l s . t h e p o r f u n c t i o n c o n t i n u a l l y m o n i - t o r s t h e s u p p l y v o l t a g e o n t h e v i n p i n . w h e n t h e v i n v o l t - a g e s t a r t s t o e s t a b l i s h , t h e i n t e r n a l l d o 5 a n d l d o 3 v o l t - a g e s t a r t t o r i s e . s o f t - s t a r t t h e a p w 8 8 2 0 h a s a b u i l t - i n d i g i t a l s o f t - s t a r t t o c o n t r o l t h e o u t p u t v o l t a g e r i s e a n d l i m i t t h e c u r r e n t s u r g e a t t h e s t a r t - u p . d u r i n g s o f t - s t a r t , a n i n t e r n a l r a m p c o n n e c t e d t o t h e o n e o f t h e p o s i t i v e i n p u t s o f t h e g m a m p l i f i e r r i s e s u p t o r e p l a c e t h e r e f e r e n c e v o l t a g e ( 0 . 5 v ) u n t i l t h e r a m p v o l t - a g e r e a c h e s t h e r e f e r e n c e v o l t a g e . t h e s o f t - s t a r t i n t e r v a l i s a b o u t 1 m s t y p i c a l , i n d e p e n d e n t o f t h e c o n v e r t e r ? | s i n - p u t a n d o u t p u t v o l t a g e s . s o f t - s t o p t h e a p w 8 8 2 0 i n t e g r a t e d a s o f t - s t o p c i r c u i t r y i n t h e e v e n t o f p w m u n d e r - v o l t a g e o r s h u t d o w n . t h e s o f t - s t o p f u n c - t i o n d i s c h a r g e s t h e p w m o u t p u t v o l t a g e s ( v o u t x ) f r o m c s n x t o t h e g n d t h r o u g h a n i n t e r n a l 2 0 w s w i t c h . t h e r e f e r e n c e r e m a i n s a c t i v e t o p r o v i d e a n a c c u r a t e t h r e s h - o l d a n d o v e r - v o l t a g e p r o t e c t i o n . u l t r a s o n i c m o d e t h e a p w 8 8 2 0 i n t e g r a t e d u l t r a s o n i c m o d e . t h e u l t r a s o n i c m o d e a c t i v a t e s a n u n i q u e p f m m o d e w i t h a m i n i m u m s w i t c h i n g f r e q u e n c y o f 2 5 k h z . t h e m i n i m u m f r e q u e n c y 2 5 k h z o f u l t r a s o n i c m o d e e l i m i n a t e s a u d i o - f r e q u e n c y i n t e r f e r e n c e i n l i g h t l o a d c o n d i t i o n . i t w i l l t r a n s i t t o u n i q u e p f m m o d e w h e n o u t p u t l o a d i n g m a k e s t h e f r e q u e n c y e x c e e d u l t r a s o n i c f r e q u e n c y . w h e n t h e c o n t r o l l e r d e t e c t s t h a t n o s w i t c h i n g h a s o c c u r r e d w i t h i n a b o u t 4 0 m s ( t y p i c a l ) , a n u l t r a s o n i c p u l s e w i l l b e o c c u r r e d . t h e u l t r a s o n i c c o n - t r o l l e r t u r n s o n t h e l o w s i d e m o s f e t f i r s t l y t o r e d u c e t h e o u t p u t v o l t a g e . a f t e r t h e c o m p x v o l t a g e e x c e e d 0 . 4 5 v , t h e c o n t r o l l e r t u r n s o f f l o w s i d e m o s f e t s a n d t u r n s h i g h - s i d e m o s f e t s o n . w h e n t h e i n d u c t o r c u r r e n t r i s e i n w h i c h c o m p x e x c e e d 0 . 4 5 v , t h e c o n t r o l l e r t u r n s o n t h e l o w - s i d e m o s f e t a g a i n u n t i l t h e i n d u c t o r c u r r e n t i s b e l o w t h e z e r o - c r o s s i n g t h r e s h o l d . t h e b e h a v i o r i s t h e s a m e a s p f m m o d e . e n a b l e / s h u t d o w n t h e a p w 8 8 2 0 i n t e g r a t e i n d i v i d u a l c o n t r o l i n p u t p i n f o r b o t h c o n v e r t e r s . p u l l i n g c o m p x / s d l o w ( v d i s a b l e = 0 . 4 v ) w i l l s h u t d o w n t h e r e p r e s e n t c o n t r o l l e r . w h e n t h e p u l l - d o w n d e v i c e i s r e l e a s e d , t h e c o m p x / s d p i n w i l l s t a r t t o r i s e . w h e n t h e c o m p x / s d p i n r i s e s a b o v e t h e v d i s a b l e t r i p p o i n t , t h e a p w 8 8 2 0 w i l l b e g i n a n e w i n i t i a l i z a t i o n a n d s o f t - s t a r t c y c l e . p o w e r g o o d i n d i c a t o r t h e s y s p o k i s u s e d t o i n d i c a t e t h e s t a t u s o f t h e p w m 5 a n d p w m 3 . i f a n f a u l t e v e n d e t e c t e d o n f b 5 , t h i s p i n r e p r e s e n t s a 1 0 0 w r e s i s t a n c e . i f a n f a u l t e v e n d e t e c t e d o n f b 3 , t h i s p i n r e p r e s e n t s a 6 0 w r e s i s t a n c e . t h e f a u l t e v e n i n c l u d e s f b x o v e r - v o l t a g e , f b x u n d e r - v o l t a g e , i n d u c t o r o v e r - c u r r e n t s e n s e a t c s p 5 / 3 a n d c s n 5 / 3 . when the v fb5 and v fb3 exceed 90% of reference volt- age and operate normally, this pin represents high impedance. free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 1 4 f u n c t i o n d e s c r i p t i o n ( c o n t . ) a d a p t i v e s h o o t - t h r o u g h p r o t e c t i o n the gate driver incorporates adaptive shoot-through pro- tection to high-side and low-side mosfets from con- ducting simultaneously and shorting the input supply. this is accomplished by ensuring the falling gate has turned off one mosfet before the other is allowed to rise. during turn-off the low-side mosfet, the internal lgate voltage is monitored until it below 1.5v threshold, at which time the ugate is released to rise after a constant delay. during turn-off the high-side mosfet, the ugate volt- age is also monitored until it above 1.5v threshold, at which time the lgate is released to rise after a constant delay. i n d u c t o r c u r r e n t s e n s e a n d o v e r - c i r c u i t p r o t e c t i o n the over-current function protects the switching converter against over-current or short-circuit conditions. the con- troller senses the inductor current by detecting the drain to-source voltage which is the product of the inductor?s current and the on-resistance of the low-side mosfet during it?s on-state. a resistor (r ocsetx ), connected from the lgatex to the gnd, programs the over-current trip level. before the ic initiates soft-start process, an inter- nal current source, i ocsetx (5ma typical), flowing through the r ocsetx develops a voltage (v rocsetx ) across the r ocsetx . the device holds v rocsetx and stops the current source, i ocsetx . the APW8820 initial soft-start process after over- current setting completed. once the voltage across the low-side mosfet exceeds the v rocset , the ic shuts off the converter. both the output of the pwmx converter are latched. the threshold of the valley inductor current-limit is therefore given by: the equations of the sensing network are: o v e r - t e m p e r a t u r e p r o t e c t i o n ( o t p ) when the junction temperature exceed the threshold tem- perature 160oc (typical), the device enter the over tem- perature protection (otp). when the otp occurs, the APW8820 shut off 2 channels of regulators? circuitry with a latch. the APW8820 will initiate a soft-start process until re-cycle power supply or both the control input (compx/sd). o v e r - t e m p e r a t u r e p r o t e c t i o n ( o t p ) below shows the circuit of sensing inductor current. con- necting a series resistor (r s ) and a capacitor (c s ) net- work in parallel with the inductor and measuring the volt- age (v c ) across the capacitor can sense the inductor current. r s c s dcr v c + - csp csn phase v l + - i l v out ( ) dcr l c r take c sr 1 dcr sl ) s ( i c sr 1 1 ) s ( v ) s ( v ) dcr sl ( ) s ( i ) s ( v s s s s l s s l c l l = + + = + = + = if the above is true, the voltage across the capacitor c s is equal to voltage drop across the inductor dcr, and the voltage vc is proportional to the inductor current i l . l c i x dcr v = where i l is the inductor current dcr is the inductor resistance dcr r i i ocsetx ocsetx limit = free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 1 5 f u n c t i o n d e s c r i p t i o n ( c o n t . ) for the over-current is never occurred in the normal oper- ating load range; the variation of all parameters in the above equation should be considered: the minimum iocset (9 m a) and minimum r ocsetx should be used in the above equation. the overshoot and transient peak current also should be considered. due to the ocp sense the integrated vc, the ocp thresh- old equal to output current (i outx ) rather than peak or val- ley inductor current. the APW8820 will initiate a soft-start process until re- cycle power supply or both the control input (compx/sd). u n d e r v o l t a g e p r o t e c t i o n in the operational process, if short-circuit occurs, the out- put voltage will drop quickly. when load current increased, the output voltage will falls out of the required regulation range. the under-voltage circuitry continually monitors the setting output voltage after soft-start is completed. if a load step is strong enough to pull the output voltage lower than the under-voltage threshold, the pwm controller starts a soft-stop process to shut down the output gradually. if any channel triggers under-voltage, both under-voltage protection circuits active and latched off when the soft- stop process is completed. the under-voltage threshold is 70% of the nominal output voltage. the APW8820 will initiate a soft-start process until re-cycle power supply or both the control input (compx/sd). o u t p u t o v e r - v o l t a g e p r o t e c t i o n the over-voltage protection circuitry monitors the fb5 and fb3 voltage to prevent the output from over-voltage. once the feedback voltage, fb5 and fb3, exceed 120% of ref- erence voltage, the APW8820 turns on the low-side mosfet until the output voltage falls below 5% of normal. when the output voltage falls below 5% of normal, all the channels converter are shut off. the ugatex and lgatex are pulled low. the APW8820 will initiate a soft-start pro- cess until re-cycle power supply or both the control input (compx/sd). lgatex r ocsetx v outx ugatex i ocsetx phasex v rocsetx dcr lx vin v c + - to logic control gm sample and hold to lgatex v rocsetx i ocsetx ( 10 ua typical ) v in power - on reset free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 1 6 a p p l i c a t i o n i n f o r m a t i o n l a y o u t c o n s i d e r a t i o n i n a n y h i g h s w i t c h i n g f r e q u e n c y c o n v e r t e r , a c o r r e c t l a y o u t i s i m p o r t a n t t o e n s u r e p r o p e r o p e r a t i o n o f t h e r e g u l a t o r . w i t h p o w e r d e v i c e s s w i t c h i n g a t 1 0 0 0 k h z , t h e r e s u l t i n g c u r r e n t t r a n s i e n t w i l l c a u s e v o l t a g e s p i k e a c r o s s t h e i n - t e r c o n n e c t i n g i m p e d a n c e a n d p a r a s i t i c c i r c u i t e l e m e n t s . a s a n e x a m p l e , c o n s i d e r t h e t u r n - o f f t r a n s i t i o n o f t h e p w m m o s f e t . b e f o r e t u r n - o f f , t h e m o s f e t i s c a r r y i n g t h e f u l l l o a d c u r r e n t . d u r i n g t u r n - o f f , c u r r e n t s t o p s f l o w i n g i n t h e m o s f e t a n d i s f r e e - w h e e l i n g b y t h e l o w e r m o s f e t a n d p a r a s i t i c d i o d e . a n y p a r a s i t i c i n d u c t a n c e o f t h e c i r c u i t g e n - e r a t e s a l a r g e v o l t a g e s p i k e d u r i n g t h e s w i t c h i n g i n t e r v a l . i n g e n e r a l , u s i n g s h o r t a n d w i d e p r i n t e d c i r c u i t t r a c e s s h o u l d m i n i m i z e i n t e r c o n n e c t i n g i m p e d a n c e s a n d t h e m a g n i t u d e o f v o l t a g e s p i k e . a n d s i g n a l a n d p o w e r g r o u n d s a r e t o b e k e p t s e p a r a t e t i l l c o m b i n e d u s i n g g r o u n d p l a n e c o n s t r u c t i o n o r s i n g l e p o i n t g r o u n d i n g . b e l o w i l l u s t r a t e s t h e l a y o u t , w i t h b o l d l i n e s i n d i c a t i n g h i g h c u r r e n t p a t h s ; t h e s e t r a c e s m u s t b e s h o r t a n d w i d e . c o m - p o n e n t s a l o n g t h e b o l d l i n e s s h o u l d b e p l a c e d l o s e t o g e t h e r . b e l o w i s a c h e c k l i s t f o r y o u r l a y o u t : t h e g a t e d r i v e r t r a c e s h o u l d b e a s s h o r t a s p o s s i b l e . c b o o t x w h i c h c o n n e c t e d b e t w e e n b o o t x a n d p h a s e x s h o u l d c l o s e d t o i c . k e e p t h e s w i t c h i n g n o d e s ( u g a t e x , l g a t e x , a n d p h a s e x ) a s s h o r t a s p o s s i b l e . k e e p t h e s e n s i t i v e s m a l l n o d e s ( f b x , c s p x , c s n x , c o m p x ) a w a y f r o m t h e s w i t c h i n g n o d e s ( u g a t e x , l g a t e x , a n d p h a s e x ) . p l a c e t h e s o u r c e o f t h e h i g h - s i d e m o s f e t a n d t h e d r a i n o f t h e l o w - s i d e m o s f e t a s c l o s e a s p o s s i b l e . m i n i - m i z i n g t h e i m p e d a n c e w i t h w i d e l a y o u t p l a n e b e t w e e n t h e t w o p a d s r e d u c e s t h e v o l t a g e b o u n c e o f t h e n o d e . d e c o u p l i n g c a p a c i t o r , c o m p e n s a t i o n c o m p o n e n t , t h e r e s i s t o r d i v i d e r s , a n d b o o t c a p a c i t o r s s h o u l d b e c l o s e t h e i r p i n s . ( f o r e x a m p l e , p l a c e t h e d e c o u p l i n g c e r a m i c c a p a c i t o r n e a r t h e d r a i n o f t h e h i g h - s i d e m o s f e t a s c l o s e a s p o s s i b l e . t h e b u l k c a p a c i t o r s a r e a l s o p l a c e d n e a r t h e d r a i n ) . t h e i n p u t c a p a c i t o r s h o u l d b e n e a r t h e d r a i n o f t h e u p p e r m o s f e t ; t h e o u t p u t c a p a c i t o r s h o u l d b e n e a r t h e l o a d s . t h e i n p u t c a p a c i t o r g n d s h o u l d b e c l o s e t o t h e o u t p u t c a p a c i t o r g n d a n d t h e l o w e r m o s f e t g n d . t h e d r a i n o f t h e m o s f e t s ( v i n a n d p h a s e n o d e s ) s h o u l d b e a l a r g e p l a n e f o r h e a t s i n k i n g . l o a d bootx gnd lgatex ugatex phasex v in ldo 5 ldo 5 free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 1 7 p a c k a g e i n f o r m a t i o n q f n 3 x 3 - 2 0 pin 1 corner d 2 e 2 k l e s y m b o l min . max . 1 . 00 0 . 00 0 . 15 0 . 25 1 . 50 1 . 80 0 . 05 1 . 50 a a 1 b d d 2 e e 2 e l millimeters a 3 0 . 20 ref qfn 3 x 3 - 20 0 . 30 0 . 50 1 . 80 0 . 008 ref min . max . inches 0 . 039 0 . 000 0 . 006 0 . 010 0 . 059 0 . 071 0 . 059 0 . 012 0 . 020 0 . 80 0 . 071 0 . 031 0 . 002 0 . 40 bsc 0 . 016 bsc k 0 . 20 0 . 008 2 . 90 3 . 10 0 . 114 0 . 122 2 . 90 3 . 10 0 . 114 0 . 122 note : 1 . followed from jedec mo - 220 weee d pin 1 e a b a 1 a 3 nx aaa c aaa 0 . 08 0 . 003 free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 1 8 q f n 4 x 4 - 2 4 p a c k a g e i n f o r m a t i o n a d e a 1 a 3 b s y m b o l min . max . 0 . 80 0 . 00 0 . 18 0 . 30 2 . 50 2 . 80 0 . 05 2 . 50 a a 1 b d d 2 e e 2 e l millimeters a 3 0 . 20 ref tqfn 4 x 4 - 24 0 . 35 0 . 45 2 . 80 0 . 008 ref min . max . inches 0 . 032 0 . 000 0 . 008 0 . 012 0 . 098 0 . 110 0 . 098 0 . 014 0 . 018 0 . 70 0 . 110 0 . 028 0 . 002 0 . 50 bsc 0 . 020 bsc c aaa nx pin 1 pin 1 corner e 2 d 2 e l k k 0 . 20 0 . 008 aaa 0 . 08 0 . 003 3 . 90 4 . 10 0 . 154 0 . 161 3 . 90 4 . 10 0 . 154 0 . 161 note : 1. doll owed from jedfc mo-220 wggd-6 free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 1 9 application a h t1 c d d w e1 f 330 ? 2.00 50 min. 12.4+2.00 - 0.00 13.0+0.50 - 0.20 1.5 min. 20.2 min. 12.0 ? 0.30 1.75 ? 0.10 5.5 ? 0.05 p 0 p1 p 2 d 0 d1 t a 0 b 0 k 0 qfn3x3 - 20 4.0 ? 0.10 8.0 ? 0.10 2.0 ? 0.05 1.5+0.10 - 0.00 1.5 min. 0.6+0.00 - 0. 40 3.30 ? 0.20 3.30 ? 0.20 1.30 ? 0.20 a h t1 c d d w e1 f 330.0 ? 2.00 50 min. 12.4+2.00 - 0.00 13.0+0.50 - 0.20 1.5 min. 20.2 min. 12.0 ? 0.30 1.75 ? 0.10 5.5 ? 0.05 p 0 p1 p 2 d 0 d1 t a 0 b 0 k 0 tqfn4x4 - 24 4.0 ? 0.10 8.0 ? 0.10 2.0 ? 0.05 1.5+0.10 - 0.00 1.5 min. 0.6+0.00 - 0.40 4.30 ? 0.20 4.30 ? 0.20 1.30 ? 0.20 (mm) d e v i c e s p e r u n i t c a r r i e r t a p e & r e e l d i m e n s i o n s package type unit quantity qfn3x3 - 20 tape & reel 3000 tqfn4x4 - 24 tape & reel 3000 a e 1 a b w f t p0 od0 b a0 p2 k0 b 0 section b-b section a-a od1 p1 h t1 a d free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 2 0 t a p i n g d i r e c t i o n i n f o r m a t i o n q f n 3 x 3 - 2 0 t q f n 4 x 4 - 2 4 user direction of feed user direction of feed free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 2 1 c l a s s i f i c a t i o n p r o f i l e free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 2 2 c l a s s i f i c a t i o n r e f l o w p r o f i l e s profile feature sn - pb eutectic assembly pb - free assembly preheat & soak temperature min (t smin ) temperature max (t smax ) time (t smin to t smax ) ( t s ) 100 c 150 c 60 - 120 seconds 150 c 200 c 60 - 1 2 0 seconds average ramp - up rate (t smax to t p ) 3 c/second ma x. 3 c/second max. liquidous temperature ( t l ) time at l iquidous (t l ) 183 c 60 - 150 seconds 217 c 60 - 150 seconds peak package body temperature (t p ) * see classification temp in table 1 see classification temp in table 2 time (t p ) ** within 5 c of the spec ified c lassification t emperature ( t c ) 2 0 ** seconds 3 0 ** seconds average r amp - down rate (t p to t smax ) 6 c/second max. 6 c/second max. time 25 c to p eak t emperature 6 minutes max. 8 minutes max. * tolerance for peak profile temperature (t p ) is defined a s a supplier minimum and a user maximum. ** tolerance for time at peak profile temperature (t p ) is defined as a supplier minimum and a user maximum. table 2. pb - free process ? classification temperatures (tc) package thickness volume mm 3 <350 volume mm 3 350 - 2000 volume mm 3 >2000 <1.6 mm 260 c 260 c 260 c 1.6 mm ? 2.5 mm 260 c 250 c 245 c 3 2.5 mm 250 c 245 c 245 c table 1. snpb eutectic process ? classification temperatures (tc) package thickness volume mm 3 <350 volume mm 3 3 350 <2.5 mm 235 c 22 0 c 3 2.5 mm 220 c 220 c test item method description solderability jesd - 22, b102 5 sec, 245 c holt jesd - 22, a108 1000 hrs, bias @ t j =125 c pct jesd - 22, a102 168 hrs, 100 % rh, 2atm , 121 c tct jesd - 22, a104 500 cycles, - 65 c~150 c hbm mil - std - 883 - 3015.7 vhbm ? 2kv mm jesd - 22, a1 15 vmm ? 200v latch - up jesd 78 10ms, 1 tr ? 100ma r e l i a b i l i t y t e s t p r o g r a m free datasheet http:///
c o p y r i g h t ? a n p e c e l e c t r o n i c s c o r p . r e v . a . 1 - d e c . , 2 0 1 2 a p w 8 8 2 0 w w w . a n p e c . c o m . t w 2 3 c u s t o m e r s e r v i c e a n p e c e l e c t r o n i c s c o r p . head office : no.6, dusing 1st road, sbip, hsin-chu, taiwan, r.o.c. tel : 886-3-5642000 fax : 886-3-5642050 t a i p e i b r a n c h : 2 f , n o . 1 1 , l a n e 2 1 8 , s e c 2 j h o n g s i n g r d . , s i n d i a n c i t y , t a i p e i c o u n t y 2 3 1 4 6 , t a i w a n t e l : 8 8 6 - 2 - 2 9 1 0 - 3 8 3 8 f a x : 8 8 6 - 2 - 2 9 1 7 - 3 8 3 8 free datasheet http:///

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