1 description the dfc15 series of dc/dc converters are designed to provide a wide range of pcb power solutions. the converter features dual output filters for low noise. trim and remote on/off features give flexibility to designs. the output of the converter is electrically isolated, thereby allowing the output to be configured as a positive or negative output voltage. the ultra-wide input range, from 20 to 60 volts, allows use in many industrial and communication applications. features up to 15 watts output power efficiencies to 83% very low off current 700v isolation dual stage output filter -40? to +90? operation ultra-wide range input (3:1) remote on/off and trim dfc15 series single output mechanical tolerances unless otherwise noted: x.xx dimensions: ?.020 inches x.xxx dimensions: ?.005 inches 1 bottom view side view 0.000 0.000 0.3 0.000 2.02 (51.31) (7.62) 0.040 (1.02) dia 6 places 0.55 1.62 (13.97) (41.15) 2 3 7 6 5 1.800 0.11 0.700 0.400 0.100 0.600 0.300 0.31 (10.16) (2.54) (7.62) (7.9) (17.78) (15.24) (2.8) (45.72) notes (1) all parameters measured at tc = 25?, nominal input voltage and full rated load unless otherwise noted. refer to the technical reference section for the definition of terms, measurement circuits and other information. (2) the on/off pin is the open collector ttl, cmos, and relay compatible. the input to this pin is referenced to pin 2 (-input) and is protected to +75vdc. (3) the case is tied to pin 3, +input pin. (4) the case thermal impedance is specified as the case temperature rise over ambient per package watt dissipated. n i p n o i t c n u f 1t u p n i + 2t u p n i - 3f f o / n o 4n i p o n 5t u o + 6t u o - 7m i r t t r a h c n o i t c e l e s l e d o m e g n a r t u p n i c d v t u p t u o c d v t u p t u o a m n i m x a m 5 s 8 4 u 5 1 c f d 0 20 65 0 0 0 3 2 1 s 8 4 u 5 1 c f d 0 20 62 10 5 2 1 5 1 s 8 4 u 5 1 c f d 0 20 65 10 0 0 1 ) 1 ( s n o i t a c i f i c e p s l a r e n e g s l e d o m l l a s t i n u ) 2 ( n o i t c n u f f f o / n o l e v e l c i g o l f f o n e p o n i p r o n i m 0 . 8 c d v l e v e l c i g o l f f o x a m 0 . 2 c d v e c n a t s i s e r t u p n i p y t 0 0 1 s m h o k t n e r r u c e l d i r e t r e v n o c w o l n i p f f o / n o p y t 1 < a m ) 3 ( n o i t a l o s i e g a t l o v n o i t a l o s i t u p t u o o t t u p n i 0 1 e g a k a e l a n i m0 0 7c d v t u p t u o o t t u p n i e c n a t i c a p a c p y t0 0 3f p n o i t c n u f m i r t t u p t u o e c n a t s i s e r t u p n ip y t0 2s m h o k e g a t l o v t i u c r i c n e p on i m5 % l a t n e m on r i v n e c t , e g n a r g n i t a r e p o e s a c g n i t a r e d o n n i m x a m 0 4 - 0 9 c e g n a r e g a r o t s n i m x a m 5 5 - 5 0 1 c ) 5 ( e c n a d e p m i l a m r e h tp y t0 1t t a w / c l a r e n e g ) d e t a l u c l a c ( f b t mp y t0 0 0 , 0 0 8s r h t h g i e w t i n up y t7 5 / 2m g / z o t i k g n i t n u o m s i s s a h c1 a 2 m c www.power-one.com www.power-one.com for the most up-to-date information 24 hours/day? days/week rev. 04/2000
2 s r e t e m a r a p t u p n i ) 1 ( l e d o m 5 s 8 4 u 5 1 c f d 2 1 s 8 4 u 5 1 c f d 5 1 s 8 4 u 5 1 c f d s t i n u e g n a r e g a t l o v n i m p y t x a m 0 . 0 2 0 . 8 4 0 . 0 6 c d v d a o l l l u f t n e r r u c t u p n i d a o l o n p y t p y t 0 5 9 2 5 1 9 4 5 0 9 4 a m y c n e i c i f f ep y t9 72 83 8% y c n e u q e r f g n i h c t i w sp y t0 2 1z h k s m 0 0 1 , e g a t l o v r e v o t u p n i m u m i x a m e g a m a d o n x a m5 7c d v r o r r e t u p t u o % 1 , e m i t n o - n r u tp y t5 0 1s m s r e t e m a r a p t u p t u o ) 1 ( l e d o m 5 s 8 4 u 5 1 c f d 2 1 s 8 4 u 5 1 c f d 5 1 s 8 4 u 5 1 c f d s t i n u e g a t l o v t u p t u o52 15 1c d v ) 3 ( d a o l d e t a r n i m x a m 0 0 0 0 3 0 0 5 2 1 0 0 0 0 1 a m e g n a r e g a t l o v d a o l % 0 0 1 n i m p y t x a m 5 9 . 4 0 0 . 5 5 0 . 5 0 9 . 1 1 0 0 . 2 1 0 1 . 2 1 0 9 . 4 1 0 0 . 5 1 0 1 . 5 1 c d v n o i t a l u g e r d a o l d a o l l l u f % 0 0 1 - 5 2 p y t x a m 5 . 0 5 7 . 0 1 . 0 2 . 0 1 . 0 2 . 0 % n o i t a l u g e r e n i l c d v x a m - n i m = n i v p y t x a m 1 . 0 5 1 . 0 1 0 . 0 1 . 0 1 0 . 0 1 . 0 % ) 4 ( y t i l i b a t s m r e t t r o h sp y t2 0 . 0 b d ) 2 ( w b z h m 0 2 - 0 , e s i o np y t5 70 60 6v m p p e s i o n s m rp y t3 2 2v m s m r t n e i c i f f e o c e r u t a r e p m e t p y t x a m 0 5 0 5 1 / m p p c n o i t c e t o r p t i u c r i c t r o h s t u o - o t t u o + t i m i l t n e r r u c s u o u n i t n o c notes (1) all parameters measured at tc=25?, nominal input voltage and full rated load unless otherwise noted. refer to the technical reference section for the definition of terms, measurement circuits and other information. (2) noise is measured per technical reference section. measurement bandwidth is 0-20 mhz. rms noise is measured over a 0.01-1 mhz bandwidth. to simulate standard pcb decoupling practices, output noise is measured with a 1?/35v tantalum capacitor located 1 inch away from the converter. (3) minimum load required for rated regulation only. dynamic response may degrade if run at less than 25% full load. (4) short term stability is specified after a 30 minute warm-up at full load, and with constant line, load and ambient conditions. (5) the input ripple rejection is specified for dc to 120hz ripple with a modulation amplitude of 1% vin. dfc15 series application notes: external capacitance requirements no external capacitance is required for operation of the dfc15 series. however, for maximum performance, it is recommended that the dfc15 series use a capacitor of sufficient ripple current capacity connected across the input pins if a capacitive input source is farther than 1?from the converter. to meet the reflected ripple requirements of the converter, an input impedance of less than 0.05 ohms from dc to 200khz is required. external output capacitance is not required for operation, however it is recommended that 1 f to 10 f of tantalum and 0.001 to 0.1 f ceramic capacitance be selected for reduced system noise. additional output capacitance may be added for increased filtering, but should not exceed 400 f. negative outputs a negative output voltage may be obtained by connecting the +out to circuit ground and connecting -out as the negative output. (continued) dfc15 series ?single output
3 5 +out 7 trim 10k load using trimpot 6 -out 5 +out 7 trim trim down trim up load using fixed resistors 6 -out dfc15 series block diagram 5 + output shielded isolation transformer + 6 - output 7 trim isolated feedback low tc bandgap reference five sided shielded copper case + 2 ?input on/off 1 3 + input current mode pwm + 1.2 1.0 0.6 0.8 0.4 0.2 0.0 030 20 100% load 50% load 10 40 50 60 input current vs. input voltage line input (volts) input current (amps) 90 85 80 line = 20vdc line = 48vdc line = 60vdc 65 75 70 60 020 40 60 80 90 10 30 50 70 100 efficiency vs. load load (%) efficiency (%) 1.00 0.80 100% full load 75% full load 50% full load 0.60 0.40 0.20 20 40 45 60 25 30 35 50 55 input ripple vs. line input line input (volts) reflected rms ripple (amps) 85 82 80 77 75 20 45 50 55 40 35 100% full load 50% full load 25 30 60 efficiency vs. line input voltage line input (volts) efficiency (%) typical performance: (tc=25?, vin=nom vdc, rated load) 120 100 60 80 40 20 0 080 20 40 100 120 140 160 180 60 output voltage vs. output load output load (%) output voltage (%) 50 0 5 10 15 60 70 80 90 40 output power derating ambient temperature power output application notes (cont?): remote on/off operation the remote on/off pin may be left floating if this function is not used. it is recommended to drive this pin with an open collector arrangement or a relay contact. when the on/off pin is pulled low with respect to the -input, the converter is placed in a low power drain state. do not drive this input from a logic gate directly; there is a 100k internal pull-up resistor to a 9 volt source. output trim the trim pin may be used to adjust the output ?% from the nominal setting. this function allows adjustment for voltage drops in the system wiring, as well 5.2 volt outputs for ecl applications. figure 1 shows the proper connections to use this function. a trimpot value of 10k should be used for 5 volt outputs. a trimpot value of 20k should be used for 12 and 15 volt outputs. if the trim function is not required the pin may be left floating. figure 1. dfc15 series ?single output nuclear and medical applications power-one products are not authorized for use as critical components in life support systems , equipment used in hazardous environments, or nuclear control systems without the express written consent of the president of power-one, inc. technical revisions the appearance of products, including safety agency certifications pictured on labels, may change dependin g on the date manufactured. specifications are subject to change without notice.
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