Power Supply Assembly - HP dx7300 Technical Reference Manual

Power and Signal Distribution

7.2.1 Power Supply Assembly

These systems feature power supplies with power factor-correction logic. Four power supplies
are used: a 200-watt power supply for the USDT unit, a 240-watt power supply for the SFF and
ST units, a 300-watt power supply for the MT unit, and a 365-watt power supply for the CMT
unit. All power supplies feature active power factor correction (PFC). Tables 7-1 through 7-4 list
the specifications of the power supplies. Note that output load voltages are measured at the
load-side of the output connectors.
200-Watt (USDT) Power Supply Assembly Specifications
Input Line Voltage:
100–240 VAC (auto-ranging) 90–264 VAC
Line Frequency
Input (AC) Current
+3.33 VDC Output
+5.08 VDC Output
+5.08 AUX Output
+12 VDC Output [3]
- 1 2 VDC Output
NOTES:
Total continuous power should not exceed 200 watts. Total surge power (<10 seconds w/duty cycle < 5 %) should not exceed
230 watts.
[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 with 12-volt tolerance at +/- 10%.
[3] +12 VDC output can be split by the system board to +12 VDC (@ 3 A) and +12 Vcpu (@ 12.5 A) power planes.
240-Watt (SFF/ST) Power Supply Assembly Specifications
Input Line Voltage:
100–240 VAC (auto-ranging)
Line Frequency
Input (AC) Current
+3.3 VDC Output
+5.08 VDC Output
+5.08 AUX Output
+12 VDC Output
+12 VDC Output (Vcpu)
-- 1 2 VDC Output
NOTES:
Total continuous power should not exceed 240 watts. Total surge power (<10 seconds w/duty cycle < 5 %) should not exceed
260 watts.
[1] The minimum current loading figures apply to a PS On start up only.
7-2
Table 7-1.
Min.
Range or Current
Tolerance Loading [1]
--
47–63 Hz --
-- --
+ 4 % 0.1 A
+ 3.3 % 0.3 A
+ 3.3 % 0.0 A
+ 5 % 0.1 A
+ 10 % 0.0 A
Table 7-2.
Min.
Range/ Current
Tolerance Loading [1]
90–264 VAC --
47–63 Hz --
-- --
+ 4% 0.1 A
+ 3.3 % 0.3 A
+ 3.3 % 0.0 A
+ 5 % 0.1 A
+ 5 % 0.1 A
+ 10 % 0.0 A
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Max. Surge
Current Current [2]
-- --
-- --
4.0 A --
12.0 A 12.0 A
10.0 A 10.0 A
2.6 A 3.1 A
15.5 A 17.0 A
0.15 A 0.15 A
Max. Surge
Current Current [2]
-- --
-- --
5.0 A --
15.0 A 15.0 A
17.0 A 170 A
3.0 A 3.5 A
7.5 A 9.0 A
1 1.0 A 14.5 A
0.15 A 0.15 A
Technical Reference Guide
Max.
Ripple
--
--
--
50 mV
50 mV
50 mV
120 mV
200 mV
Max.
Ripple
--
--
--
50 mV
50 mV
50 mV
120 mV
120 mv
200 mV