output voltage +5v +12v -12v -5v +3.3v min. load 2a 0.1a 0a 0a 0a rated load 25a 10a 1a 1a 8a max. load 30a 15a 2a 2a 15a voltage accuracy 4.8~5.2v 11.4~12.6v -11.4~-12.6v -4.75~-5.25v 3.13~3.4v +5vsb 0a 0.72a 1.2a 4.75~5.25v input voltage the range of input voltage is from 72~136vdc input current the maximum input current is 5a at 110vdc input inrush current will not exceed 10a at 110vdc input cold start, 25 o c load range at factory, all outputs in 60% rated load condition; the +5v output is set to between 4.80v and 5.20v. the other outputs are checked to be within the specified voltage accuracy range ripple and noise the peak to peak ripple and noise for +5v, +3.3v outputs are less than 50mv, and for the other output are less than 100mv at rated load. measuring is done by 15mhz bandwidth limited oscilloscope and terminated each output with a 0.47uf capacitor electrolysis capacitor at rated load, nominal line line regulation the output line regulation for each output is less than +/-1% while measuring at rated load and -40~-72vdc input voltage changing load regulation the output voltage load regulation is less than the values in the following table by changing each output load +/-40% from 60% from rated load, and keep other outputs at 60% rated load output power the total dc continuous power shall be kept within 300w ambient temperature of 40 o c below, and input voltage at 110vdc. the maximum, total combined output power on the 3.3v and 5v rails is 150w power on signal this ttl compatible signal (active low) is use to switch on the main output. when power on is disconnected from secondary common, all outputs except +5vsb shall turn off power good signal when power start-up, the power good signal will increase between 100ms to 500ms after all output dc voltages are within regulation limits power fail signal the power fail signal will fall at least 1ms before any of the output voltages lower than the regulation limits specifications MPD-830R 300w dc-dc atx power supply dc-dc industrial power supply efficiency the efficiency is higher than 65% while measuring at nominal line and rated output altitude will operate properly at any altitude between 0 to 10,000ft protection over voltage: for some reasons the power supply might fail to control itself, the build-in crowbar circuit will automaticallly shut down the outputs to avoid damaging the external circuits. the trip point of o.v.p. circuit is around 5.7v to 7.0v short circuit: the power supply will go into hiccup mode function against short circuit or over load conditions. if the faults condition removed, the power supply will restart automatically temperature 0~+70 o c, -20 o c can start up, derating from 50 o c (operating); -40~+75 o c (storage) humidity the power supply can operate from 5% humidity to 95% humidity non-condensing at 40 o c connectors dc connectors: 3 positions terminal blocks atx: molex 39-01-2200 or equivalent disk drive: amp 1-480424-0 or equivalent 3.5" floppy driver: amp 171822-4 or equivalent p4: molex 39-01-2045 or equivalent safety en 60950 emi en55022 (1998) / en55011 (1999) ems iec 61000-4-2 / iec 61000-4-3 / iec 61000-4-4 dimensions 14.0 x 15.0 x 8.62 cm; tolerance specified is +/-0.4mm between mounting holes and +/-0.8mm for other dimensions 1.5 12.5 1.0 1.6 6.4 0.5 13.0 0.5 1.5 30.0 dc input cable dc output wires 8.62 13.8 11.4 15.0 3.1 5.2 0.5 4.29 0.47 0.6 8.0 0.3 1.5 1.0 3.0 0.4 12.0 0.3
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