cps250-m series 250 watt ac-dc power supplies total power: 250 watts input voltage: 90 - 264 v # of outputs: single special features ? designed for forced air and natural convection cooling ? medical and ite safety approvals, 2x mopp ? dual fused ? type bf ready ? active power factor correction, 61000-3-2 compliant ? built-in class b emi flter ? less than 1u high ? lpx100 enclosure kit available ? <500 mw no-load power consumption ? for use in class i or class ii applications ? three-year warranty (consult factory for extended terms) safety ? en 60950-1 / 60601-1 ? ul 60950-1 / 60601-1 ? csa ? ce lvd mark ? ccc electrical specifcations input input voltage ra nge 90 - 264 vrms frequency 47 - 63 hz (360 - 440 hz with higher leakage) inrush current 70 apk, < 1 ms, cold start effciency 93% typical leakage current specifed for medical approvals no load power < 500 mw output maximum power 250 w, forced-air cooling 155 w, free-air natural convection adjustment range -0% / +10% holdup time 10 ms @ 225 w fan output 12 v @ 500 ma standby output 5 v @ 100 ma (for CPS253-M1 only) control and protection remote on/off for CPS253-M1 only dc ok for CPS253-M1 only overvoltage protection latching/ac recycle required to restart psu overcurrent protection auto-recovery short circuit protection auto-recovery (impedance <50 mohm overtemperature protection auto-recovery with hysteresis data sheet power
environmental specifcations operating temperature -20 c to +70 c (derate at 50 c), startup at -40 c storage temperature -40 c to +85 c operating humidity 5% to 90% (non-condensing) non-operating humidity 5% to 95% (non-condensing) maximum altitude 5000 m (3000 m for medical), derating may apply other specifcations isolation 4000 vac (input to output) 1500 vac (input to pe; output to pe) line harmonics 61000-3-2, class a conducted emi* level b, cispr 22 and fcc part 15 radiated emi* level b, cispr 22 and fcc part 15 surge immunity level 3, 61000-4-5, criterion a medical emc 60601-1-2, edition 4 (cover may be required for some tests) mtbf (telcordia, issue 3, method 1 case 3) > 2.2 mhrs, 25 c, 155 w natural convection, 115 vac > 5.1 mhrs, 25 c, 250 w forced air, 115 vac pin assignments connector pin number designation mating conectors j5 (ac input) 1 3 mounting holes ac input l1/line ac input l2/neutral pe molex 09-50-8031 housing with 45570-3000 crimp or equivalent. use awg 20-18 wires. j0 (dc output) 1 2 3 4 5 6 main output return main output return main output return main output main output main output molex 09-50-8061 housing with 45570-3000 crimp or equivalent. use awg 20-18 wires. busbar (dc output) applies to 12 v variant only. 1 2 main output main output return ring terminal: tyco 35148 or kst rv3-4 or equivalent. j2 (fan supply) 1 2 fan return fan voltage cvilux ci0102s0000 housing; ci01t01mpp0 crimp; awg 30-24. j403 applies to CPS253-M1 only 1 2 3 4 5 5 vdc standby standby return remote inhibit dc ok vfb (feedback loop pin) molex 504193-0500 with 504185-1000 crimp or equivalent. use awg 30-26 wires. *applies to class i input with ground tabs tied to a common ground plane and connected to system ground. consult technical reference notes for details. cps250-m series data sheet
mechanical drawings - 12 v variant b c b c (2x) 94.6 0.3 101.6 0.3 50.8 0.3 (2x) 43.8 0.3 32.77max 2.5max (2x) 3.5 0.1 (2x)3.5 (4x) 4 input l2 t501 c12 assy-j0 j2 j5 j5 -pin 1 preferred earth j2-pin 1 barcode vo(+) model label warning label q501 see detail a vo (+) vo (-) vr1 trimpot for output adjustability clockwise: increasing output voltage tightening torque: 6.0-8.0kgf-cm full clockwise: 250w full counterclockwise: 155w vr2 trimpot for ocp limit adjust cps250-m series data sheet
mechanical drawings - 24 v and 48 v variants (2x) 94.6 0.3 101.6 0.3 50.8 0.3 (2x) 43.8 0.3 32.77max 2.5max (2x) 3.5 0.1 (2x) 3.5 0.1 4 input l2 t501 c12 assy-j0 j2 j5 j5 -pin 1 preferred earth j2-pin 1 barcode vo(+) model label warning label vr1 trimpot for output adjustability clockwise: increasing output voltage full clockwise: 250w full counterclockwise: 155w vr2 trimpot for ocp limit adjust cps250-m series data sheet
mechanical drawings - CPS253-M1 a c 94.6 0.3 101.6 0.3 50.8 0.3 (2x) 43.8 0.3 32.77max 2.5max (2x) 3.5 0.1 (2x) 3.5 0.1 4 input l2 t501 c12 assy-j0 j2 j5 j5 -pin 1 preferred earth j2-pin 1 barcode vo(+) j403 pin 1 model label warning label vo (+) vo (-) vr1 trimpot for output adjustability clockwise: increasing output voltage tightening torque: 6.0-8.0kgf-cm full clockwise : 250w full counterclockwise: 155w vr2 trimpot for ocp limit adjust notes: 1. ocp can not be adjusted on the fy. default setting is for 250 w forced air. 2. unit should be turned off before trimpot adjustment. 3. ocp does not vary linearly with the trimpot adjustment. it is either full clockwise (250 w) or full counter clockwise (155 w). 4. thermal hot spot reference - do not exceed indicated temperature limits to ensure operation is within the conponent thermal derating limits. measure the component temperatures using k type thermocouples. thermal hot spot reference component temperature limit l2 135 c t501 145 c q501 120 c c12 95 c cps250-m series data sheet
output power derating figure 1. output power vs. ambient temperature at natural convection and forced air cooling [300 lfm]. figure 2. output power vs. input line at natural convection and forced air cooling [300 lfm]. effciency curves figure 3. typical effciency for 12 v output figure 4. typical effciency for 24 v output figure 5. typical effciency for 48 v output figure 6. estimated product useful life based on c12 (bulk capacitor) case temperature 0 50 100 150 200 250 300 0 10 20 30 40 50 60 70 80 output ? power ? [watts] ambient ? temperature ? [c] output ? power ? derating forced ? air natural ? convection 75 100 125 150 175 200 225 250 275 90 110 130 150 170 190 210 230 250 270 output ? power ? [watts] ac ? input ? line ? [vac] output ? power ? vs. ? input ? line forced ? air natural ? convection 86% 87% 88% 89% 90% 91% 92% 93% 94% 95% 96% 0 0.2 0.4 0.6 0.8 1 efficiency %? of ? rated ? output ? load cps253 \ m ? (12v) ? efficiency ? curve ? 115 ? vac 230 ? vac 86% 87% 88% 89% 90% 91% 92% 93% 94% 95% 96% 0 0.2 0.4 0.6 0.8 1 efficiency %? of ? rated ? output ? load cps255 \ m ? (24v) ? efficiency ? curve ? 115 ? vac 230 ? vac 86% 87% 88% 89% 90% 91% 92% 93% 94% 95% 96% 0 0.2 0.4 0.6 0.8 1 efficiency % ? of ? rated ? output ? load cps258 \m ? (48v) ? efficiency ? curve ? 115 ? vac 230 ? vac 0 50 100 150 50 60 70 80 90 100 110 lifetime ? (khrs) c12 ? temperature ?? [ ? c] natural ? convection ? estimated ? service ? life ? vs ? component ? temp estimated ? life cps250-m series data sheet
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