HP Compaq dc7600 MT

7-12 www.hp.com Technical Reference Guide
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.
Figure 7-6. Low Voltage Supply and Distribution Diagram
Regulator
Circuit
Processor
VccP
Clk, S. Bridge, PCI,
USB, PS2 Kybd
Aux
5 VDC
5 Aux PS
Switch
Regulator
5 VDC
3.3 VDC AUX
1.2 VDC Aux
5 VDC PS
CPU 12 VDC PS
PCI, SATA, LPT,
Chipset
2.5 VDC AUX
Power
3 VDC
Switch
Supply
Chipset
5 VDC PS
5 Aux PS
COM, Diskette logic
Chipset
3.3 VDC PS
3.3 VDC PS
SIO, Audio, FWH logic
Clk, PCI, COM logic
3.3 VDC
1.8 V Regulator
0.9 V Regulator
Chipset, DIMMs
DIMMs
1.2 Aux V Regulator
2.5 V Regulator
1.5 V Regulator
1.2 V Regulator
1.05 V Regulator
2.5 VDC
1.5 VDC
1.2 VDC
1.02 VDC
DAC
Chipset
Processor
Chipset
1.8 VDC
0.9 VDC