Compaq 8000 Technical Reference Guide: HP Compaq 8000 Elite Series Business De - Page 76
SFF/CMT Power Distribution, Table 7-1., USDT 135-Watt Power Supply Unit Specifications
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Power and Signal Distribution Table 7-1 lists the specifications of the external supply. Table 7-1. USDT 135-Watt Power Supply Unit Specifications Parameter Input Line Voltage Range Line Frequency Input Current, Maximum load @ 90 VAC Output Voltage Output Current, nominal load Output Current, maximum load Output Current, peak load (300 ms max) [1] 90-265 VAC 47-63 Hz 2.4 A 19.5 VDC 3.5 A 6.9 A 9.0 A NOTES: Total continuous power should not exceed 135 watts. Total surge power (
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7-2
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Technical Reference Guide
Power and Signal Distribution
Table 7-1 lists the specifications of the external supply.
NOTES:
Total continuous power should not exceed 135 watts. Total surge power (<10 seconds w/duty cycle < 5 %) should not exceed
170 watts.
[1] Using 100 VAC input. The output voltage is allowed to drop to a minimum of 15 VDC during the transient period.
7.3 SFF/CMT Power Distribution
The SFF and CMT form factors use a common power source power supply unit contained within
the system chassis. Figure 7-2 shows the block diagram for power generation in the SFF and
CMT.
NOTES:
Connectors not shown to scale.
All + and
–
values are VDC.
RTN = Return (signal ground)
Figure 7-2. SFF/CMT Power Distribution and Cabling, Block Diagram
Table 7-1.
USDT 135-Watt Power Supply Unit Specifications
Parameter
Input Line Voltage Range
90–265 VAC
Line Frequency
47–63 Hz
Input Current, Maximum load @ 90 VAC
2.4 A
Output Voltage
19.5 VDC
Output Current, nominal load
3.5 A
Output Current, maximum load
6.9 A
Output Current, peak load (300 ms max) [1]
9.0 A
Conn
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
P1
RTN
RTN
–
12 V
+12 Vmain
+12 Vmain
+12 Vsb
P2
FANcmd
Fan Speed
PS On
Pwr Good
RTN
RTN
P3
RTN
RTN
+12 Vcpu
+12 Vcpu
System Board
Power On
Power Control Logic, DC/DC Converter
Front Bezel
& Voltage Regulators
Fan
PS
+12 Vcpu
Power Button
Spd
+12 Vmain
+12 Vsb
90 - 264 VAC
NOTE: Return (RTN or ground) not shown.
-12 V
P1
On
Pwr
Good
P2
P3
P3
1
2
3
4
1
2
3
4
P2
5
6
P1
6
1
3
4
Fan
Cmd
Power Supply Unit