a 1 1.8 watt dual series dc/dc converters calex faxfacts: 119 http://www.calex.com 2401 stanwell drive concord, ca 94520-4841 (510) 687-4411 ? fax (510) 687-3333 isolation transformer lc input filter bipolar push-pull inverter positive regulator negative regulator 1f 10f 3 4 5 1 2 + input - input + output cmn - output six-sided shielded steel case bandgap reference features n low profile case (0.375" high) n low noise operation n lc section input filter to reduce reflected ripple n wide input voltage range n high isolation breakdown voltage (500 vdc minimum) n long term output fault survival n 100% burn-in, 100% tested n 5 year warranty 1f 10f 1.8 watt dual series block diagram description these 1.8 watt dual dc/dc converters are designed for high performance industrial data acquisition systems and board level products. the converter consists of a rugged bipolar switching stage, isolation transformer, and high regulation linear post regulator for low noise/highly stable dc outputs. 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 5 7 0 . 2 1 d 50 6 . 40 5 . 50 . 2 1 5 7 0 6 0 . 5 1 d 50 6 . 40 5 . 50 . 5 1 0 6 5 7 0 . 2 1 d 2 10 8 . 0 10 8 . 3 10 . 2 1 5 7 0 6 0 . 5 1 d 2 10 8 . 0 10 8 . 3 10 . 5 1 0 6
a 2 1.8 watt dual series dc/dc converters calex faxfacts: 119 http://www.calex.com 2401 stanwell drive concord, ca 94520-4841 (510) 687-4411 ? fax (510) 687-3333 notes: * all parameters measured at tc= 25 c, 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) turn on time is defined as the time from the application of power until the output is within 1% if its final value. (3) determine the correct fuse size by calculating the maximum dc current drain at low line input, maximum load (or use the supplied curves) and then adding 20 to 25% to get the desired fuse size. (4) no minimum load required. (5) short term stability is specified after a 30 minute warm-up at full load and with constant line, load and ambient conditions. (6) the transient response is specified as the time required for the output to settle from a 100% step load change (rise time of step = 2 sec) to a 1% error band. (7) dynamic response is the peak overshoot voltage during the transient response as defined in note 6 above. (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 r e t e m a r a p t u p n i l e d o m 0 6 0 . 5 1 d 5 5 7 0 . 2 1 d 50 6 0 . 5 1 d 2 1 5 7 0 . 2 1 d 2 1s t i n u e g n a r e g a t l o v n i m x a m 0 6 . 4 0 5 . 5 0 8 . 0 1 0 8 . 3 1 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 0 1 0 0 2 0 8 0 5 1 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 5 6 0 3 1 5 6 2 5 4 a m y c n e i c i f f ep y t5 57 5% y c n e u q e r f g n i h c t i w sp y t5 55 5z 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 m2 . 65 . 4 1c d v ) 2 ( r o r r e t u p t u o % 1 , e m i t n o - n r u tp y t4 4 s m e s u f d e d n e m m o c e r ) 3 ( e p y t w o l b w o l s * s r e t e m a r a p t u p t u o l e d o m 5 7 0 . 2 1 d 2 1 5 7 0 . 2 1 d 50 6 0 . 5 1 d 2 1 0 6 0 . 5 1 d 5s t i n u e g a t l o v t u p t u o2 1 5 1 c d v ) 4 ( d a o l d e t a r n i m x a m 0 5 7 0 0 6 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 8 8 . 1 1 0 0 . 2 1 2 1 . 2 1 5 8 . 4 1 0 0 . 5 1 5 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 ( x a m0 . 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 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 2 . 0 % ) 5 ( y t i l i b a t s m r e t t r o h sp y t1 . 0% y t i l i b a t s m r e t g n o lp y t4 . 0s r h k / % ) 6 ( e s n o p s e r t n e i s n a r tp y t0 0 1s ) 7 ( e s n o p s e r c i m a n y dp y t5 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 t0 6b d w b z h m 0 2 - 0 , e s i o n p y t x a m 5 1 0 3 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 1 0 0 3 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 m u m i x a m e t u n i m 1 , m r e t t r o h s
a 3 1.8 watt dual series dc/dc converters calex faxfacts: 119 http://www.calex.com 2401 stanwell drive concord, ca 94520-4841 (510) 687-4411 ? fax (510) 687-3333 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 seal around terminals is not hermetic. do not immerse units in any liquid. 0123456 line input (volts) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 input current (amps) 5d input current vs. line input 50% full load 100% full load 0 20406080100 load (%) 20 30 40 50 60 70 efficiency (%) 5d efficiency vs. load line = 4.6vdc line = 5vdc line = 5.5vdc 4.6 4.8 5.0 5.2 5.4 5.6 line input (volts) 35 40 45 50 55 60 65 efficiency (%) 5d efficiency vs. line input 100% full load 50% full load typical performance (tc=25c; full rated load). * 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 3f 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 3 - 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 ) 9 ( e c n a d e p m i l a m r e h tp y t5 . 6 1t t a w / c l a r e n e g t h g i e w t i n up y t9 . 0z o s t i k g n i t n u o m5 1 s m & 6 s m
a 4 1.8 watt dual series dc/dc converters calex faxfacts: 119 http://www.calex.com 2401 stanwell drive concord, ca 94520-4841 (510) 687-4411 ? fax (510) 687-3333 typical performance (tc=25c; full rated load). 10 11 12 13 14 line input (volts) 35 40 45 50 55 60 65 efficiency (%) 12d efficiency vs. line input 50% full load 100% full load 0 50 100 150 200 +io percent of full load 0 50 100 150 200 -io percent of full load output loading chart -io +io 0 20406080100 load (%) 20 30 40 50 60 70 efficiency (%) 12d efficiency vs. load line = 10.8vdc line = 12vdc line = 13.8vdc -30-20-10 0 1020304050607080 case temperature (deg c) -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 normalized output (%) output voltage vs case temperature positive output negative output 02468101214 line input (volts) 0.00 0.05 0.10 0.15 0.20 0.25 0.30 input current (amps) 12d input current vs. line input 50% rated load 100% rated load frequency (hz) .001 .01 .1 1 impedance (ohms) output impedance vs. frequency positive output negative output 10 100 1k 10k 100k 1m
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