Chapter 7 Power and Signal Distribution
Compaq Deskpro Personal Computers
Third Edition - April 2001
7-2
7.1.1 POWER SUPPLY ASSEMBLY
The power supply assembly is contained in a single unit that features a selectable input voltage:
90-132 VAC and 180-264 VAC. Small Form Factor systems use a 120-watt supply while all other
systems employ a 200-watt supply. Tables 7-1 and 7-2 list the specifications of the power
supplies.
Table 7–1. 120-Watt Power Supply Assembly Specifications
Table 7-1.
120-Watt Power Supply Assembly Specifications (P/N 165997)
 
 
Range/ 
Tolerance 
Min. Current 
Loading [1] 
Max. 
Current 
Surge  
Current [2] 
Max. 
Ripple 
Input Line Voltage: 
   110 VAC Setting 
   220 VAC Setting 
 
90 - 132 
VAC 
180-264 
VAC 
 
-- 
-- 
 
-- 
-- 
 
-- 
-- 
 
-- 
-- 
Line Frequency  47 - 63 Hz  --  --  --  -- 
Steady State Input (VAC) Current  -- -- 4.0 A -- -- 
+3.3 VDC Output  +/- 5%  0.60 A  11.0 A  11.0 A  50 mV 
+5 VDC Output  +/- 5 %  0.50 A  11.0 A  11.0 A  65 mV 
+3 AUX Output  +/- 5 %  0.20 A  1.00 A  1.00 A  50 mV 
+5 AUX Output  +/- 4 %  0.20 A  2.40 A  2.40 A  65 mV 
+12 VDC Output  +/- 5 %  0.00 A  3.00 A  3.50 A  120 mV 
-12 VDC Output  +/- 10 %  0.00 A  0.15 A  0.15 A  200 mV 
NOTES: 
  [1] Minimum loading requirements must be met at all times to ensure normal operation  
     and specification compliance. 
[2] Surge duration no longer than 10 seconds and +12 tolerance +/- 10%. 
 
Table 7–2. 200-Watt Power Supply Assembly Specifications
Table 7-2.
200-Watt Power Supply Assembly Specifications (P/N 161071 or 386461)
 
 
Range/ 
Tolerance 
Min. Current 
Loading [1] 
Max. 
Current 
Surge  
Current [2] 
Max. 
Ripple 
Input Line Voltage: 
   110 VAC Setting 
   220 VAC Setting 
 
90 - 132 
VAC 
180-264 
VAC 
 
-- 
-- 
 
-- 
-- 
 
-- 
-- 
 
-- 
-- 
Line Frequency  47 - 63 Hz  --  --  --  -- 
Steady State Input (VAC) Current  -- -- 6.00 A -- -- 
+3.3 VDC Output  +/- 4%  1.40 A  18.0 A [3]  18.0 A  50 mV 
+3.3 AUX  +/-5 %  0.00  2.00 A  2.00 A  50 mV 
+5 VDC Output  +/- 5 %  1.40 A  20.0 A [3]  20.0 A  50 mV 
-5 VDC Output  +/- 10 %  0.00 A  0.15 A  0.15 A  100 mV 
+5 AUX Output  +/- 4 %  0.00 A  1.70 A  1.70 A  50 mV 
+12 VDC Output  +/- 5 %  0.07 A  6.50 A  8.50 A  120 mV 
-12 VDC Output  +/- 10 %  0.00 A  0.15 A  0.15 A  200 mV 
NOTES: 
  [1] Minimum loading requirements must be met at all times to ensure normal operation  
     and specification compliance. 
[2] Surge duration no longer than 10 seconds and +12 tolerance +/- 10%. 
[3] Maximum combined power provided by +3.3 and +5 VDC outputs should not exceed 135 watts.