www.powersolve.co.uk powersolve electronics ltd, units 8, 9 and 12 the paddock, hambridge road, newbury, berks rg14 5tq tel: 01635 521858 fax: 01635 523771 email: sales@powersolve.co.uk high density dc-dc modules ps50 series 25 to 50 watt wide input dc-dc converters single output features 25w/50w isolated output efficiency to 85% 300khz switching frequency 2 : 1 input range regulated outputs continuous short circuit protection five-sided metal case model input output output input current %eff voltage voltage current no load full load ps50-12s25 2.5 vdc 10 a 2740 ma 76 ps50-12s33 3.3 vdc 10 a 3525 ma 78 ps50-12s05 5 vdc 10 a 5145 ma 81 ps50-12s12 12 vdc 4.16 a 4950 ma 84 ps50-12s15 15 vdc 3.33 a 4950 ma 84 ps50-12s24 24 vdc 2.08 a 4950 ma 84 ps50-24s25 2.5 vdc 10 a 1353 ma 77 ps50-24s33 3.3 vdc 10 a 1740 ma 79 ps50-24s05 5 vdc 10 a 2540 ma 82 ps50-24s12 12 vdc 4.16 a 2450 ma 85 ps50-24s15 15 vdc 3.33 a 2450 ma 85 PS50-24S24 24 vdc 2.08 a 2419 ma 86 ps50-48s25 2.5 vdc 10 a 676 ma 77 ps50-48s33 3.3 vdc 10 a 870 ma 79 ps50-48s05 5 vdc 10 a 1250 ma 83 ps50-48s12 12 vdc 4.16 a 1220 ma 85 ps50-48s15 15 vdc 3.33 a 1220 ma 85 ps50-48s24 24 vdc 2.08 a 1209 ma 86 note: 1. nominal input voltage 12, 24 & 48 vdc 1 only for nominal input voltage 24 & 48 vdc 9-18vdc 18-36vdc 36-75vdc 50 ma 50 ma 50 ma
www.powersolve.co.uk powersolve electronics ltd, units 8, 9 and 12 the paddock, hambridge road, newbury, berks rg14 5tq tel: 01635 521858 fax: 01635 523771 email: sales@powersolve.co.uk high density dc-dc modules input input voltage range 12v 9-18v 24v 18-36v 48v 36-75v undervoltage lockout 12vin power up 8.8v power down 8v 24vin power up 17v power down 16v 48vin power up 34v power down 32.5v positive logic remote on/off 3.4 input filter pi type output voltage accuracy : + 1% max. transient response : 25% step load change <500 sec. external trim adj. range + 10% ripple & noise, 20mhz bw, 2.5v & 3.3v & 5v 20mv rms., max. 75mv pk-pk, max. 12v & 15v 30mv rms., max. 100mv pk-pk, max. 24v 100mv rms., max. 240mv pk-pk, max. environmental temperature coefficient + 0.03%/? short circuit protection continuous line regulation 1 + 0.2% max. load regulation 2 + 0.2% max. over voltage protection trip range, % vo nom. 115-140% current limit 110% ~150% nominal output general efficiency see table isolation voltage input/output 1500vdc min. input/case 1500vdc min. output/case 1500vdc min. isolation resistance 10 7 ohm min. switching frequency 12/24vin 400khz, typ. 48vin 300khz, typ. operating case temperature -40? to 100? storage temperature -55? to +105? thermal shutdown, case temp. 100? typ. dimensions 2.28x2.40x0.50 inches (57.9x61.0x12.7 mm) case material aluminium electrical specification note: 1. measured from high line to low line. 2. measured from full load to zero load. 3. logic compatibility - open collector ref. to -input, module on - open circuit, module off - < 0.8vdc 4. suffix "n" to the model number with negative logic remote on/off. pin function 1 +vin 2 on/off 3 case 4-vin 5 -vout 6 -sense 7 trim 8 +sense 9 +vout pin connection external output trim 2.40 (61.00) 0.08 (2.03) 2pl. 0.50 (12.70) 0.18 min. (4.60 ) 2*r1.50 mounting inserts m3*0.5 through 4pl. 2.00 (50.80) 1.40 (35.56) 0.60 (15.24) 4 3 2 1 5 6 7 8 9 1.90 (48.25) 2.28 (57.90) 0.04 (1.02) 7pl. all dimensions in inches(mm) -sense (6) trim up trim (7) trim down +sense (8) high signal here disable output on/off (2) -vin (4) pin tolerances inches .xx +.02 .xxx+.01 +0.02 millimeters .x+.5 .xx+.25 +0.5 remote on/off control bottom view side view -sense (6) trim up trim (7) trim down +sense (8) -sense (6) +sense (8) trim (7) 10k ohms trimpot all specifications typical at nominal line, full load and 25? unless otherwise noted. 2
www.powersolve.co.uk powersolve electronics ltd, units 8, 9 and 12 the paddock, hambridge road, newbury, berks rg14 5tq tel: 01635 521858 fax: 01635 523771 email: sales@powersolve.co.uk 3 derating: the operating case temperature range of the ps50 series is -40? to +100?. when operating the ps50 series, proper derating or cooling is needed. the following curve is the derating curve of a ps50 without heat sink. where: the power dissipation (pd): pd = pi - po = po (1-n) /n the thermal resistance are listed below: chart of thermal resistance vs air flow: the temperature rise ( t ): t = pd * rca application note air flow rate typical rca natural convection 20ft./min. (0.1m/s) 7.12 ?/w 100 ft./min. (0.5m/s) 6.21 ?/w 200 ft./min. (1.0m/s) 5.17 ?/w 300 ft./min. (1.5m/s) 4.29 ?/w 400 ft./min. (2.0m/s) 3.64 ?/w 500 ft./min. (2.5m/s) 2.96 ?/w 600 ft./min. (3.0m/s) 2.53 ?/w 700 ft./min. (3.5m/s) 2.37 ?/w 800 ft./min. (4.0m/s) 2.19 ?/w power dissipated vs ambient temperature and air flow 15 10 5 0 ambient temperature, ta(deg. c) power disspated, pd (watts) 0 10 20 30 40 50 60 70 80 90 100 20 25 30 35 40 45 50 natural convection 20 ft./min. (0.1 m/s) 100 ft./min. (0.5 m/s) 200 ft./min. (1.0 m/s) 300 ft./min. ( 1.5 m/s) 400 ft./min. (2.0 m/s) 500 ft./min. (2.5 m/s) 600 ft./min. (3.0 m/s) 700 ft./min. (3.5 m/s) 800 ft./min. (4.0 m/s) forced convection power derating without heat sink high density dc-dc modules
www.powersolve.co.uk powersolve electronics ltd, units 8, 9 and 12 the paddock, hambridge road, newbury, berks rg14 5tq tel: 01635 521858 fax: 01635 523771 email: sales@powersolve.co.uk 4 remote on/off control external output trimming output noise the ps50 series allows the user to switch the module on and off electronically with remote on/off feature. the ps50 series are available with "positive logic" or "negative logic" (option). output may optionally be externally trimmed (+ 10%) with a fixed resistor or an external trimpot as shown. the output noise is measured with 10 f tantalum capacitor and 1.0 f ceramic capacitor across output. high signal here disable output on/off (2) -vin (4) negative logic table external output output noise test circuit schematic logic positive logic logic low - switch closed logic high - switch open module on module off module off module on +sense (8) -sense (6) -sense (6) +sense (8) trim (7) trim (7) trim up trim down 10k ohms trimpot +vout (9) -vout (5) ceramic 1.0 f solid tantalum 10 f to scope resistor load logic state (pin 2) all specifications typical at nominal line, full load and 25? unless otherwise noted. high density dc-dc modules
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