HP dc7800 manual CMT Power Distribution, CMT 365-Watt Power Supply Unit Specifications

Power and Signal Distribution

7.2.3 CMT Power Distribution

The CMT form factor uses a power supply unit internal to the system chassis. Figure 7-4 shows the block diagram for power generation in the CMT.

Front Bezel System Board

Power Button

Power On

90 - 264 VAC

NOTE:

CPU, slots, Chipsets, Logic, & Voltage Regulators

		+3.3 VDC	5 AUX	+5 VDC	+12 VDC	+12 VccP	-12 VDC
								+3.3 VDC
PS On	Fan							+5 VDC
	Spd [1]							+12 VDC

Power Supply

Unit

Drives

[1] Not present on CMT.

Figure 7-4. CMT Power Generation, Block Diagram

Table 7-3 lists the specifications for the 365-watt power supply used in the CMT form factor.

Table 7-3.

CMT 365-Watt Power Supply Unit Specifications

	Range or	Min.
		Current	Max.	Surge	Max.
	Tolerance	Loading [1]	Current	Current [2]	Ripple
Input Line Voltage:
115–230 VAC (auto-ranging)	90–264 VAC	--	--	--	--
Line Frequency	47–63 Hz	--	--	--	--
Input (AC) Current	--	--	6.0 A	--	--
+3.3 VDC Output	+ 4 %	0.10 A	24.0 A	24.0 A	50 mV
+5.08 VDC Output	+ 3.3 %	0.30 A	19.0 A	19.0 A	50 mV
+5.08 AUX Output	+ 3.3 %	0.00 A	3.00 A	3.00 A	50 mV
+12 VDC Output	+ 5 %	0.20 A	12.0 A	14.5 A	120 mV
+12 VDC Output (Vcpu)	+ 5 %	0.00 A	14.5 A	17.5 A	200 mv
-12 VDC Output	+ 10 %	0.00 A	0.15 A	0.15 A	200 mV

NOTES:

Total continuous output power should not exceed 365 watts. Maximum surge power should not exceed 385 watts.. Maximum combined power of +5 and +3.3 VDC is 160 watts.

[1]Minimum loading requirements must be met at all times to ensure normal operation and specification compliance.

[2]Maximum surge duration for +12Vcpu is 1 second with 12-volt tolerance +/- 10%.

7-4 www.hp.com Technical Reference Guide