Low Voltage Production/Distribution - HP Compaq dc7600 MT Technical Reference Manual

Power and Signal Distribution

7.3.2 Low Voltage Production/Distribution

Auxiliary voltages less than 5 volts and all voltages less than 3.3 volts are produced through
regulator circuitry (Figure 7-6) on the system board.
Power
Supply
Figure 7-6. Low Voltage Supply and Distribution Diagram
7-12
Regulator
CPU 12 VDC PS
Circuit
5 VDC PS
5 VDC
Switch
5 Aux PS
Aux
Regulator
3.3 VDC PS
1.2 Aux V Regulator
2.5 V Regulator
1.5 V Regulator
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1.8 V Regulator
0.9 V Regulator
3.3 VDC AUX
2.5 VDC AUX
3 VDC
Switch
3.3 VDC PS
1.2 VDC Aux
1.2 V Regulator
1.05 V Regulator
VccP
Processor
5 VDC PS
PCI, SATA, LPT,
COM, Diskette logic
5 VDC
USB, PS2 Kybd
1.8 VDC
Chipset, DIMMs
0.9 VDC
DIMMs
5 Aux PS
Chipset
Chipset
3.3 VDC
Clk, PCI, COM logic
Clk, S. Bridge, PCI,
SIO, Audio, FWH logic
Chipset
2.5 VDC
DAC
1.5 VDC
Chipset
1.2 VDC
Processor
1.02 VDC
Chipset
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