a 12 watt dual series dc/dc converters stco #970624-2, stco #990408-1 manufacturing company, inc. concord, california 94520 ph: 925/687-4411 or 800/542-3355 fax: 925/687-3333 www.calex.com email: sales@ca lex.com 1 4/8/99
features ! low noise output ! lc type input filter ! six-sided shielded steel case ! very wide input voltage ranges (9-36, 18-54, and 24-72) ! high efficiency operation ! long term output fault survival ! 5 year warranty 12 watt dual series block diagram description these 10 and 12 watt dual output dc/dc converters are designed for telecommunications, medical or industrial equipment and instrumentation systems. the converters feature very wide input voltage ranges. the converter consists of a hi-speed chopper circuit using state of the art mosfet technology, isolation transformer, and high regulation linear post regulator. this provides for very low noise and ultra stable output voltages. 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 s t u p t u o c d v s t u p t u o a m n i mx a m 0 0 5 . 2 1 d 4 20 0 . 90 0 . 6 30 . 2 1 0 0 5 0 0 4 . 5 1 d 4 20 0 . 90 0 . 6 30 . 5 1 0 0 4 0 0 0 1 . 5 d 8 20 0 . 8 10 0 . 4 50 . 5 0 0 0 1 0 0 5 . 2 1 d 8 40 0 . 4 20 0 . 2 70 . 2 1 0 0 5 0 0 4 . 5 1 d 8 40 0 . 4 20 0 . 2 70 . 5 1 0 0 4
a 12 watt dual series dc/dc converters stco #970624-2, stco #990408-1 manufacturing company, inc. concord, california 94520 ph: 925/687-4411 or 800/542-3355 fax: 925/687-3333 www.calex.com email: sales@ca lex.com 2 4/8/99 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. (5) transient response is defined as the time for the output to settle from a 100% step load change to a 1% error band (rise time of step = 2sec). (6) dynamic response is defined as the peak overshoot during a transient as defined in note 5 above. * s r e t e m a r a p t u p n i l e d o m0 0 5 . 2 1 d 4 20 0 4 . 5 1 d 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 0 . 9 0 0 . 6 3 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 0 2 5 4 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 1 7 0 4 0 0 7 0 4 a m y c n e i c i f f ep y t0 7% y c n e u q e r f g n i h c t i w sp y t0 0 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 m0 4c 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 t0 6s m e s u f d e d n e m m o c e r ) 2 ( l e d o m0 0 0 1 . 5 d 8 20 0 5 . 2 1 d 8 40 0 4 . 5 1 d 8 4s t i n u e g n a r e g a t l o v n i m x a m 0 0 . 8 1 0 0 . 4 5 0 0 . 4 2 0 0 . 2 7 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 0 2 0 5 5 1 0 3 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 0 4 0 6 3 4 2 0 5 3 4 2 a m y c n e i c i f f ep y t0 60 7% y c n e u q e r f g n i h c t i w sp y t7 80 0 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 m0 60 8c 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 t0 6s 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 m0 0 0 1 . 5 d 8 2 0 0 5 . 2 1 d 4 2 0 0 5 . 2 1 d 8 4 0 0 4 . 5 1 d 4 2 0 0 4 . 5 1 d 8 4 s t i n u e g a t l o v t u p t u o5 2 1 5 1 c d v ) 3 ( t n e r r u c d e t a r n i m x a m 0 0 0 9 - / 0 0 1 1 + 0 0 0 5 0 0 0 4 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 e c n a l a b t u p t u o ) d a o l l l u f , t u p t u o s u n i m o t s u l p ( p y t x a m 6 . 0 0 . 1 % 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 5 0 . 0 0 1 . 0 2 0 . 0 7 0 . 0 2 0 . 0 7 0 . 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 7 0 . 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 t3 . 0s r h k / % ) 5 ( e s n o p s e r t n e i s n a r tp y t0 2s ) 6 ( e s n o p s e r c i m a n y dp y t0 2k 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 t0 6b d w b z h m 0 2 - 0 , e s i o n p y t x a m 0 1 0 4 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 0 1 0 0 3 0 5 0 5 1 0 5 0 5 1 c / m p p 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 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 12 watt dual series dc/dc converters stco #970624-2, stco #990408-1 manufacturing company, inc. concord, california 94520 ph: 925/687-4411 or 800/542-3355 fax: 925/687-3333 www.calex.com email: sales@ca lex.com 3 4/8/99 n i pn o i t c n u f 1t u p n i + 2t u p n i - 3t u p t u o + 4n m c 5t u p t u o - bottom view side view mechanical tolerances unless otherwise noted: x.xx dimensions: 0.020 inches x.xxx dimensions: 0.005 inches typical performance (tc=25 c, full rated load). 20 30 40 50 60 70 80 line input (volts) 60 65 70 75 efficiency (%) 48d15.400 efficiency vs. line input 50% full load 100% full load (7) the input ripple rejection is specified for dc to 120hz ripple with a modulation amplitude of 1% of vin. (8) 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. (9) the case thermal impedance is specified as the case temperature rise over ambient per package watt dissipated. * 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 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 e g a k a e l a 0 1 t u p t u o - t u p n i n i m0 0 5c 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 2 1f p 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 ) 8 ( e g n a r l a n o i t c n u f e s a c n i m x a m 0 4 - 5 8 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 ) 9 ( e c n a d e p m i l a m r e h tp y t6 t t a w / c l a r e n e g t h g i e w t i n up y t5 . 6z o s t i k g n i t n u o mv d b 8 0 - 5 1 2 k m & 2 2 0 - 5 1 2 k m 10 15 20 25 30 35 40 line input (volts) 64 66 68 70 72 efficiency (%) 24d15.400 efficiency vs. line input 50% full load 100% full load
a 12 watt dual series dc/dc converters stco #970624-2, stco #990408-1 manufacturing company, inc. concord, california 94520 ph: 925/687-4411 or 800/542-3355 fax: 925/687-3333 www.calex.com email: sales@ca lex.com 4 4/8/99 typical performance (tc=25 c, full rated load). 0 5 10 15 20 25 30 35 40 line input (volts) 0.00 0.50 1.00 1.50 2.00 2.50 input current (amps) 24d input current vs. line input 50% rated load 100% rated load 0 1020304050607080 line input (volts) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 input current (amps) 48d input current vs. line input 50% rated load 100% rated load 0 20406080100 load (%) 30 40 50 60 70 80 efficiency (%) 48d15.400 efficiecny vs. load line = 24vdc line = 48vdc line = 72vdc -30 -20 -10 0 10 20 30 40 50 60 70 80 case temperature (deg c) -0.1 0.0 0.1 0.2 normalized output (%) output voltage vs case temperature positive output negative output 0 20 40 60 80 100 120 140 160 180 200 output load (%) 0 20 40 60 80 100 120 output voltage (%) output voltage vs. output load + output - output frequency (hz) .001 .01 .1 1 impedance (ohms) output impedance vs. frequency 10 100 1k 10k 100k 1m
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