IBM 15” Service Manual
11
4.3 Power Supply Requirements
4.3.1 Input Requirements
PARAMETER RANGE CONDITION
Input Voltage 100 to 240VAC RMS Universal input full range
Input Frequency
60Hz @ 100VAC to 50Hz @
240VAC
Input Current Less than 2.0 Amps RMS
Input voltage 100 VAC RMS ; 60 Hertz.
Parameter must be reached within 3 seconds
of turn-on.
Less than 1.0 Amps RMS
Input voltage 220 VAC RMS ; 50 Hertz.
Parameter must be reached within 3 seconds
of turn-on.
Input Power Less than 40 Watts
Power factor > 0.5
Input voltage 120 VAC RMS ; 60
Hertz
Inrush Current Less than 30 A peak
Input voltage 100 VAC RMS ; 60 Hertz at all
Phase(0, 90, 180, 270 degree)
Less than 50 A peak
Input voltage 240 VAC RMS ; 50 Hertz at all
Phase(0, 90, 180, 270 degree)
Input Fusing
Fuse should be located internal
to the adapter, easily accessible
when the cover is removed
Fuse must be UL/CSA approved. Fuse value
must no have to change for 115 VAC or 230
VAC operation
Leakage Current
Less than 3.5 mA Input voltage 240 Volts RMS ; 50 Hertz
Hi-Pot
Primary to secondary 1.5KVAC for 1 Minute(leakage current 10mA)
1.8KVAC for 1 Minute(leakage current 10mA)
3.0KVAC for 1 Minute(leakage current 10mA)
without Y-cap & Coupling cap.
Primary to Saft Ground 1.5KVAC for 1 Minute(leakage current 10mA)
1.8KVAC for 1 Minute(leakage current 10mA)
4.3.2 Output Requirements
PARAMETER RANGE CONDITION
DC Out 12VDC ± 5% Min 0A Max 3.75A
Load Regulation 12.0V(12.12V) ± 5% 11.4 to 12.6VDC
Dynamic Load
Regulation
Any frequency up to 250Hz(duty
50%)
±5% for 10% to 100%, 100% to 10% load
change for
+12Vdc
Ripple & noise
170mVpp at 12VDC Input voltage : 100VAC at 60Hz 240VAC at
50Hz
* Ripple and noise are measured.
Output current
protection
less than 7.0A, more than 12.0
at 12.0VDC
Current exceeds maximum rateing more than
20%
Leakage Current Less than 0.25 mA Input voltage 100 Volts RMS ; 50 Hertz
Less than 0.5 mA Input voltage 240 Volts RMS ; 50 Hertz
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