a 25 to 45 watt uw single series dc/dc converters 2401 stanwell drive concord, california 94520 ph: 925/687-4411 or 800/542-3355 fax: 925/687-3333 www.calex.com email: sales@calex.com 1 3/2001
features ! ultra wide input voltage range ! low noise, highly regulated single outputs ! no derating to 80c case temperature ! six-sided shielded low thermal gradient copper case ! overvoltage protected output ! pulse by pulse digital current limiting thermal overload protection ! direct paralleling of outputs ! 5 year warranty description these converters are state-of-the-art 100khz bipolar based designs that provide outstanding efficiency of up to 91% at full load. the output is regulated with a high loop gain feed forward control method that provides linear regulator type performance with a true, high efficiency switching dc/dc topology. the large amount of loop gain insures excellent input ripple rejection and line transient response. outstanding line and load regulation are achieved over the full input voltage range and over the specified load current range by the use of external voltage sensing circuitry. also included are a logic shutdown pin to control converter operation and an output voltage trim pin. the converters are protected from output shorts to common by a high speed, pulse by pulse digital, current limit circuit and a resettable thermal shutdown circuit. the output and the power switch are overvoltage protected. 25 to 45 watt uw single series block diagram 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 mx a m w u 0 0 0 5 . 5 s 2 10 . 70 . 0 40 . 50 0 0 5 w u 0 0 5 2 . 2 1 s 4 20 . 4 10 . 0 40 . 2 10 0 5 2 w u 0 0 5 3 . 2 1 s 4 20 . 4 10 . 0 40 . 2 10 0 5 3 w u 0 0 0 3 . 5 1 s 4 20 . 7 10 . 0 40 . 5 10 0 0 3 t u p t u o1 c2 c1 d 5f 0 0 0 1f 0 0 0 1v 8 . 6 2 1f 0 3 3f 7 4v 5 1 5 1f 0 3 3f 7 4v 8 1
a 25 to 45 watt uw single series dc/dc converters 2401 stanwell drive concord, california 94520 ph: 925/687-4411 or 800/542-3355 fax: 925/687-3333 www.calex.com email: sales@calex.com 2 3/2001 notes * all parameters measured at tc = 25c, nominal input voltage and full rated load unless otherwise noted. refer to the calex application notes for the definition of terms, measurement circuits and other information. (2) determine the correct fuse size by calculating the maximum dc current drain at low line input, maximum load then adding 20 to 25 percent. (3) no minimum load required. (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 transient response is specified as the time required to settle from 25 to 75% step load change (rise time of step = 2sec.) to a 1% error band. (6) dynamic response is the peak overshoot voltage during the transient response time defined in note 5 above. (7) the input ripple rejection is specified for dc to 120hz ripple with a modulation amplitude of 1% vin. (8) for module protection only, see also note 2. (9) the user must not let the output at the pins exceed this voltage due to the combined effects of line drops and output trim. (10) the logic shutdown pin is open collector ttl, cmos, and relay compatible. the input to this pin is referenced to input minus and is protected to +100 vdc. (11) the functional temperature range is intended to give an additional data point for use in evaluating this power supply. at the low functional temperature the power supply will function with no side effects, however, sustained operation at the high functional temperature will reduce expected operational life. the data sheet specifications are not guaranteed over the functional temperature range. (12) the case thermal impedance is specified as the case temperature rise over ambient per package watt dissipated. (13) specifications subject to change without notice. * s r e t e m a r a p t u p n i l e d o mw u 0 0 0 5 . 5 s 2 1w u 0 0 5 2 . 2 1 s 4 2w u 0 0 5 3 . 2 1 s 4 2w u 0 0 0 3 . 5 1 s 4 2s t i n u e g n a r e g a t l o v n i m x a m 0 . 7 0 . 0 4 0 . 4 1 0 . 0 4 0 . 4 1 0 4 0 . 7 1 0 . 0 4 c d v w b z h m 0 2 - 0 , e l p p i r d e t c e l f e r p y t x a m 5 3 0 0 1 0 2 0 7 0 2 0 7 0 2 0 7 p - p a m 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 0 6 2 2 1 0 8 3 1 2 1 0 4 9 1 2 1 0 5 0 2 2 1 a m y c n e i c i f f ep y t1 80 90 91 9% y c n e u q e r f g n i h c t i w sp y t0 0 1z h k , 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 s m 0 0 1 x a m5 4c d v t u o k c o l e g a t l o v r e d n up y t6 3 13 16 1c 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 35 25 25 2s m e s u f d e d n e m m o c e r ) 2 ( * s r e t e m a r a p t u p t u o l e d o mw u 0 0 0 5 . 5 s 2 1w u 0 0 5 2 . 2 1 s 4 2w u 0 0 5 3 . 2 1 s 4 2w u 0 0 0 3 . 5 1 s 4 2s t i n u e g a t l o v t u p t u o52 12 15 1c d v ) 3 ( t n e r r u c d e t a r n i m x a m 0 0 0 0 5 0 0 0 5 2 0 0 0 5 3 0 0 0 0 3 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 0 5 9 . 4 0 0 0 . 5 0 5 0 . 5 0 0 9 . 1 1 0 0 0 . 2 1 0 0 1 . 2 1 0 0 9 . 1 1 0 0 0 . 2 1 0 0 1 . 2 1 0 0 9 . 4 1 0 0 0 . 5 1 0 0 1 . 5 1 c d v d a o l % 0 0 1 - 0 n o i t a l u g e r d a o l p y t x a m 2 0 . 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 2 0 . 0 2 . 0 % ) 4 ( y t i l i b a t s m r e t t r o h sp y t2 0 . 0% y t i l i b a t s m r e t g n o lp y t2 . 0s r h k / % ) 5 ( e s n o p s e r t n e i s n a r tp y t0 0 35 50 2 10 5s ) 6 ( e s n o p s e r c i m a n y dp y t0 5 10 0 15 3 10 3 1k a e p v m ) 7 ( n o i t c e j e r e l p p i r t u p n ip y t6 50 60 60 6b d w b z h m 0 2 - 0 , e s i o n p y t x a m 0 2 0 6 p - p v m 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 c / m p p ) 8 ( p m a l c e g a t l o v r e v op y t8 . 65 15 10 2c d v n e e w t e b e g a t l o v e l b a w o l l a m u m i x a m ) 9 ( 7 & d n a 6 s n i p c d v3 . 60 . 4 10 . 4 10 . 8 1c d v o t n o i t c e t o r p t i u c r i c t r o h s s t u p t u o l l a r o f n o m m o c d a o l r e v o l a m r e h t d n a t i m i l t n e r r u c m u m i n i m s r u o h 8 , s u o u n i t n o c
a 25 to 45 watt uw single series dc/dc converters 2401 stanwell drive concord, california 94520 ph: 925/687-4411 or 800/542-3355 fax: 925/687-3333 www.calex.com email: sales@calex.com 3 3/2001 !""#
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%! n i pn o i t c n u f 1t u p n i + 2t u p n i - 3e s n e s + 4m i r t 5e s n e s - 6t u p t u o + 7n m c 8f f o / n o * 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 as t i n u ) 0 1 ( n w o d t u h s c i g o l l e v e l c i g o l n o n e p o n i p e v a e l r o n i m4 . 2c d v l e v e l c i g o l f f ox a m5 . 1c d v e c n a t s i s e r t u p n ip y t2 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 n w o d t u h s p y t2 1a m 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 1s m h o k ) 0 1 ( e g n a r g n i m m a r g o r p n i m p y t 5 1 7 1 % e g a t l o v g n i m m a r g o r p ) e g n a r j d a / n i m ( n i m p y t x a m ) % 5 1 + ( 0 . 0 ) % 0 . 0 ( 5 . 2 ) % 5 1 - ( 0 . 5 c d v y t i r a e n i l g n i m m a r g o r p c d v 5 - 0 p y t% 1 n a h t r e t t e b l a t n e m n o r i v n e 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 5 2 - 0 8 c ) 1 1 ( e g n a r l a n o i t n u f e s a c 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 - 0 0 1 c ) 2 1 ( e c n a d e p m i l a m r e h tp y t4 . 4t t a w / c n w o d t u h s l a m r e h t e r u t a r e p m e t e s a c p y t0 9c l a r e n e g t h g i e w t i n u0 . 7. z o t i k g n i t n u o m s i s s a h c9 s m 5 10152025303540 line input (volts) 76 77 78 79 80 81 82 83 84 efficiency (%) 12s5.5000uw efficiency vs. line input 50% full load 100% full load 0 20406080100 load (%) 65 70 75 80 85 efficiency (%) 12s5.5000uw efficiency vs. load line = 7vdc line = 12vdc line = 40vdc 5 10152025303540 line input (volts) 0.0 1.0 2.0 3.0 4.0 5.0 input current (amps) 12s5.5000uw input current vs. line input voltage 50% full load 100% full load typical performance (tc=25 c; full rated load) mechanical tolerances unless otherwise noted: x.xx dimensions: 0.020 inches x.xxx dimensions: 0.005 inches seal around terminals is not hermetic. do not immerse units in any liquid. connections for output trim bottom view side view
a 25 to 45 watt uw single series dc/dc converters 2401 stanwell drive concord, california 94520 ph: 925/687-4411 or 800/542-3355 fax: 925/687-3333 www.calex.com email: sales@calex.com 4 3/2001 typical performance (tc=25 c; full rated load) 10 15 20 25 30 35 40 line input (volts) 86 88 90 92 efficiency (%) 24s12.2500uw efficiency vs. line input 50% full load 100% full load 0 20406080100 load (%) 50 55 60 65 70 75 80 85 efficiency (%) 24s12.2500uw efficiency vs. load line = 14vdc line = 24vdc line = 40vdc 10 15 20 25 30 35 40 line input (volts) 0.0 1.0 2.0 3.0 4.0 input current (amps) 24s12.3500uw input current vs. line input voltage 50% full load 100% full load 15 20 25 30 35 40 line input (volts) 0.0 1.0 2.0 3.0 4.0 input current (amps) 24s15.3000uw input current vs. line input voltage 50% full load 100% full load 5 10152025303540 line input (volts) 10 15 20 25 current (mamps) 12s5.5000uw idle current vs. line input 15 20 25 30 35 40 line input (volts) 10 12 14 16 18 current (mamps) 24s15.3000uw idle current vs. line input frequency (hz) -60 -50 -40 -30 -20 attenuation (db) 12s5.5000uw line to output transfer function vs frequency 100 1k 10k frequency (hz) -70 -60 -50 -40 -30 -20 attenuation (db) 24s12.2500uw line to output transfer function 100 1k 10k 0 20 40 60 80 100 120 140 output load (%) 0 20 40 60 80 100 120 output voltage (%) output voltage vs. output load -30 -20 -10 0 10 20 30 40 50 60 70 80 case temperature (deg c) -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 normalized output (%) output voltage vs. case temperature frequency (hz) .001 .01 .1 1 impedance (ohms) output impedance vs. frequency 5v output 12v & 15v output 10 100 1k 10k 100k 1m
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