HP dc71xx Manuale Utente
7-2
361834-002
Technical Reference Guide
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 340-watt power supply for the CMT
unit. All power supplies except that for the MT feature active power factor correction (PFC) and
auto-ranging. The 300-watt power supply uses passive PFC and an AC select switch. 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.
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 340-watt power supply for the CMT
unit. All power supplies except that for the MT feature active power factor correction (PFC) and
auto-ranging. The 300-watt power supply uses passive PFC and an AC select switch. 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.
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.
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.
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.
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.
Table 7-1.
200-Watt (USDT) Power Supply Assembly Specifications
Range or
Tolerance
Min.
Current
Loading [1]
Max.
Current
Surge
Current [2]
Max.
Ripple
Input Line Voltage:
115–230 VAC (auto-ranging) 90–264 VAC
115–230 VAC (auto-ranging) 90–264 VAC
--
--
--
--
Line Frequency
47–63 Hz
--
--
--
--
Input (AC) Current
--
--
4.0 A
--
--
+3.33 VDC Output
+ 4 %
0.1 A
12.0 A
12.0 A
50 mV
+5.08 VDC Output
+ 3.3 %
0.3 A
10.0 A
10.0 A
50 mV
+5.08 AUX Output
+ 3.3 %
0.0 A
2.0 A
2.0 A
50 mV
+12 VDC Output [3]
+ 5 %
0.1 A
15.5 A
18.0 A
120 mV
-12 VDC Output
+ 10 %
0.0 A
0.15 A
0.15 A
200 mV
Table 7-2.
240-Watt (SFF/ST) Power Supply Assembly Specifications
Range/
Tolerance
Min.
Current
Loading [1]
Max.
Current
Surge
Current [2]
Max.
Ripple
Input Line Voltage:
115–230 VAC (auto-ranging)
115–230 VAC (auto-ranging)
90–264 VAC
--
--
--
--
Line Frequency
47–63 Hz
--
--
--
--
Input (AC) Current
--
--
5.0 A
--
--
+3.3 VDC Output
+ 4%
0.1 A
19.0 A
19.0 A
50 mV
+5.08 VDC Output
+ 3.3 %
0.3 A
14.0 A
14.0 A
50 mV
+5.08 AUX Output
+ 3.3 %
0.0 A
3.0 A
3.0 A
50 mV
+12 VDC Output
+ 5 %
0.1 A
7.5 A
9.0 A
120 mV
+12 VDC Output (Vcpu)
+ 5 %
0.1 A
12.5 A
12.5 A
120 mv
--12 VDC Output
+ 10 %
0.0 A
0.15 A
0.15 A
200 mV