MODEL NO.
PSM250-405
SPECIFICATION
REVISION
01
DATE
2005.03.14
REV: 01 PAGE. 6
3-2. DC OUTPUT CHARACTERISTICS:
3.2.1. Output Characteristics:
Item CH1 CH2 CH3 CH4
Output Voltage +5V +5Vsb +18V +24V
Minimum load current 0.5A 0.1A O.2A 0.5A
Normal load current 3A 0.5A 3A 7.2A
Maximum load current ( @ max. total power ) 3.5A 0.75A 3.5A 7.5 A
Line regulation
±5% ±5% ±5% ±5%
Load regulation
±5% ±5%
±5% ±5%
Cross regulation
±5% ±5% ±5% ±5%
Ripple and noise 100mVp-p 100mVp-p 180mVp-p 240mVp-p
Note 1 : The maximum DC output power should be less than 258 Watts.
+24V peak power 8.2A @ 3 minute.
Note 2 : The output voltage shall stay within regulation band as specified in above for a
25 % step load change at 1A/uSec. Load capacitance is defined at minimum load
capacitance shall be zero and maximum load capacitance shall be 2200uF for
35V output.
Note 3 : Ripple is defined as a composite of a power line frequency component plus a
high frequency component due to the power oscillator. Common mode noise
which may be observed due to oscilloscope connections, different ripple and
noise at power supply shall be as shown below when measured under nominal
load with an oscilloscope with a bandwidth of 20 MHz, the output should be by
passed a 0.1uF ceramic disk capacitor in parallel with 10uF electrolytic capacitor
to the system load, the length of ground wire on probe should not longer than
40mm.
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