a 10 watt tc dual series dc/dc converters 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
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features ! 3:1 extra wide input voltage range, 20-60 vdc ! low noise, highly regulated dual outputs ! efficiency > 72% for all line conditions ! no derating to 80c case temperature ! six-sided shielded low thermal gradient copper case ! 700 vdc minimum input to output isolation ! overvoltage protected input and outputs ! pulse-by-pulse digital current limiting ! overtemperature protection circuit ! 5 year warranty 10 watt dual series block diagram description these converters provide low noise bipolar outputs from a wide range of input voltages. the converters? small 2.02" x 1.62" size makes them ideal for telecommunications, instrumentation or industrial control applications. the dual outputs are cross regulated with a high loop gain current mode control method that provides good regulation with a true, high efficiency switching dc/dc topology. the large amount of loop gain insures excellent input ripple rejection and line transient response. also included is a logic (open collector ttl / cmos compatible) shutdown pin to control converter operation. the modules in the tc dual series are protected from output shorts by a high speed, pulse-by-pulse, digital current limit circuit and a thermal overload sensing circuit. the input and output are overvoltage protected. 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 c t 0 0 4 . 2 1 d 8 40 . 0 20 . 0 62 1 0 0 4 c t 0 5 3 . 5 1 d 8 40 . 0 20 . 0 65 1 0 5 3
a 10 watt tc dual series dc/dc converters 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 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) noise is measured per calex application notes found in our power conversion design guide and catalog. (3) an external capacitor capable of withstanding at least 700 ma rms of 120 khz ripple current must be connected directly across the + and - inputs. suggested capacitors are: sprague electric: 672d686h100dm3c, 68f, 100v 672d127h100et3c, 120f, 100v panasonic: ecea2afe101, 100f, 100v ecea2afe121, 120f, 100v united chemi-con: sxe100vb120m12.5x25ll, 120f, 100v sxe100vb180m12.5x30ll, 180f, 100v sxe100vb220m12.5x35ll, 220f, 100v note:all of the above capacitors are 105 c rated. multiple smaller sized capacitors may be used in parallel as long as their total ripple capability is above 700 ma rms (see irr curve). (4) determine the correct fuse size by calculating the maximum dc current drain at low line input, maximum load and then adding 20 to 25% to get the desired fuse size. a slow blow type fuse is recommended. (5) load regulation for the outputs is specified as the voltage change when both outputs are changed from maximum to minimum load at the same time. minimum load is required for specified regulation only. the converter can be run at no load on either or both outputs with no damage. (6) cross regulation is defined as the change in one output when the other output is changed from maximum to minimum load. (7) short term stability is specified after a 30 minute warm-up at full load, constant line and recording the drift over a 24 hour period. (8) the transient response is specified as the time required to settle from a 50 to 75 % step load change (rise time of step = 2 sec) to a 50 mv error band. (9) dynamic response is the peak overshoot during a transient as defined in note 8 above. (10) the input ripple rejection is specified for dc to 120 hz ripple with a modulation amplitude of 1% of vin. * s r e t e m a r a p t u p n i l e d o mc t 0 0 4 . 2 1 d 8 4c t 0 5 3 . 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 2 0 . 0 6 0 . 0 2 0 . 0 6 c d v w b z h m 0 2 - 0 , ) 3 ( ) 2 ( e l p p i r d e t c e l f e rp y t0 0 7s m r 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 2 6 5 8 2 6 a m y c n e i c i f f ep y t9 75 7% y c n e u q e r f g n i h c t i w sp y t0 2 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 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 t0 1s m e s u f d e d n e m m o c e r ) 4 ( * s r e t e m a r a p t u p t u o l e d o mc t 0 0 4 . 2 1 d 8 4c t 0 5 3 . 5 1 d 8 4s t i n u e g a t l o v t u p t u o2 1 5 1 c d v ) 5 ( t n e r r u c d e t a r n i m x a m 0 0 1 0 0 4 0 9 0 5 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 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 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 1 . 0 5 . 0 1 . 0 5 . 0 % n o i t a l u g e r d a o l ) 5 ( d a o l l l u f x a m - n i m p y t x a m 1 . 0 5 . 0 1 . 0 5 . 0 % ) 6 ( d a o l x a m - n i m , n o i t a l u g e r s s o r c p y t x a m 0 . 1 0 . 2 3 . 1 5 . 2 % 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 1 . 0 2 . 0 % ) 7 ( y t i l i b a t s m r e t t r o h sp y t2 0 . 02 0 . 0% y t i l i b a t s m r e t g n o lp y t2 . 02 . 0s r h k / % ) 8 ( e s n o p s e r t n e i s n a r tp y t0 0 20 0 2s ) 6 ( e s n o p s e r c i m a n y dp y t5 3 15 2 1k a e p v m ) 0 1 ( n o i t c e j e r e l p p i r t u p n ip y t0 6 >0 6 >b d ) 2 ( w b z h m 0 2 - 0 , e s i o n p y t x a m 0 2 0 5 0 2 0 5 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 0 5 0 5 1 c / m p p ) 1 1 ( p m a l c e g a t l o v r e v op y t5 18 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 n a g n i t i m i l t n e r r u c h t i w n o i t c e t o r p s u o u n i t n o c s r u o h 8 f o m u m i n i m s e d i v o r p n o i t c e t o r p d a o l r e v o l a m r e h t
a 10 watt tc dual series dc/dc converters 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
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n i pn o i t c n u f 1f f o / n o 2t u p n i - 3t u p n i + 4t u p t u o + 5n m c t u p t u o 6t u p t u o - 7m i r t (11) for module protection only, see also note 4. (12) the logic on/off pin is open collector ttl, cmos, and relay compatible. the input to this pin is referenced to pin 2, -input and is protected to +100 vdc. (13) case is tied to pin 3, + input. (14) 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. (15) the case thermal impedance is specified as the case temperature rise over ambient per package watt dissipated. 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 hermatic. do not immerse unts in any liquid. connections for output trim use one resistor for either trim up or trim down. the values can range from infinity to zer ohms with zero ohms giving the most trim. low noise input circuit the circuit shown below will reduce reflected ripple to 50 ma p-p. keep all components as close to the converter as possible the inductor is 35 turns on a micro-metals t50-26 iron powder core. see note 3 for capacitor recommendations and note 4 for fuse sizing. this capacitor is required for proper operation * 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 ) 2 1 ( n o i t c n u f f f o / n o 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 m0 . 8c d v l e v e l c i g o l f f ox a m0 . 2c d v e c n a t s i s e r t u p n ip y t0 0 1s 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 t1 a m ) 3 1 ( 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 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 6f 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 t5 3s m h o k e g n a r g n i m m a r g o r pn i m0 1 % 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 ) 4 1 ( 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 - 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 1 ( e c n a d e p m i l a m r e h tp y t0 1t 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 up y t9 . 1z o *
a 10 watt tc dual series dc/dc converters 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 typical performance (tc=25 c; vin=48vdc, full rated load 20 40 60 80 100 load (%) 60 65 70 75 80 85 efficiency (%) 48d12.400tc efficiency vs load line = 20vdc line = 48vdc line = 60vdc 20 25 30 35 40 45 50 55 60 line input (volts) 74 75 76 77 78 79 80 81 82 83 efficiency (%) 48d12.400tc efficiency vs line input 50% full load 100% full load 0 102030405060 line input (volts) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 input current (amps) 48d12.400tc input current vs line input voltage 50% full load 100% full load 20 40 60 80 100 load (%) 60 65 70 75 80 85 efficiency (%) 48d15.350tc efficiency vs load line = 20vdc line = 48vdc line = 60vdc 20 25 30 35 40 45 50 55 60 line input (volts) 72 73 74 75 76 77 78 79 80 81 efficiency (%) 48d15.400tc efficiency vs line input 50% full load 100% full load 0 102030405060 line input (volts) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 input current (amps) 48d15.350tc input current vs line input voltage 50% full load 100% full load 0 100 200 300 400 500 600 700 load (%) 0 10 20 30 40 50 60 70 80 90 100 110 nominal output (%) output voltage vs. load 20 25 30 35 40 45 50 55 60 line input (volts) 0.0 0.2 0.4 0.6 0.8 1.0 reflected rms ripple (a) input ripple vs. line input frequency (hz) impedance (ohms) output impedance vs. frequency 10 1.0 0.1 0.01 10 100 1k 10k 100k 1meg -25-15-5 5 1525354555657585 ambient temperature (deg c) 0 2 4 6 8 10 12 output power (watts) tc series power derating infinite heat sink still air safe operating area -40 -20 0 20 40 60 80 case temperature (deg c) -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 normalized output (%) output voltage vs case temperature
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