Power and Signal Distribution

Table 7-1 lists the specifications of the 240-watt power supply used in the SFF unit.

Table 7-2.

SFF 240-Watt Power Supply Unit Specifications

 

 

AC Range or

Min.

 

 

 

 

 

Current

Max.

Surge

Max.

 

 

DC Regulation

Loading [1]

Current

Current [2]

Ripple

 

 

 

 

 

 

Input voltage:

 

 

 

 

 

115

VAC

90–140 VAC

--

--

--

--

230 VAC

180–264 VAC

 

 

 

 

 

 

 

 

 

 

Line Frequency

47–63 Hz

--

--

--

--

 

 

 

 

 

 

Input (AC) Current Requirement

--

--

4 A rms

--

--

(100 VAC rms @ 60 Hz)

 

 

 

 

 

 

 

 

 

 

 

Output voltage (VDC):

 

 

 

 

 

+12

Vmain

11.62 to 12.57

0.5 A

16 A

18 A

120 mV

+12

Vcpu

11.62 to 12.57

1 A

16 A

18 A

120 mV

+12

Vsb (aux)

11.06 to 11.74

0.1 A

1.3 A

1.5 A

120 mV

–12 V

–10.8 to –13.2

0 A

0.15 A

0.5 A

120 mV

 

 

 

 

 

 

 

NOTES:

Total continuous power should not exceed 240 watts. Total surge power (<10 seconds w/duty cycle < 5 %) should not exceed 265 watts.

[1]The minimum current loading figures apply to a PS On start up only.

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

Table 7-2 lists the specifications for the 320-watt power supply used in the MT and CMT form factors.

Table 7-3.

MT/CMT 320-Watt Power Supply Unit Specifications

 

 

AC Range or

Min.

 

 

 

 

 

Current

Max.

Surge

Max.

 

 

DC Regulation

Loading [1]

Current

Current [2]

Ripple

 

 

 

 

 

 

Input voltage:

 

 

 

 

 

115

VAC

90–140 VAC

--

--

--

--

230 VAC

180–264 VAC

 

 

 

 

 

 

 

 

 

 

Line Frequency

47–63 Hz

--

--

--

--

Input (AC) Current Requirement

--

--

5.5 A rms

--

--

(100 VAC rms @ 60 Hz)

 

 

 

 

 

 

 

 

 

 

 

Output voltage (VDC):

 

 

 

 

 

+12

Vmain

11.62 to 12.57

0.5 A

16 A

18 A

120 mV

+12

Vcpu

11.62 to 12.57

1 A

16 A

18 A

120 mV

+12

Vsb (aux)

11.06 to 11.74

0.1 A

1.3 A

1.5 A

120 mV

–12 V

–10.8 to –13.2

0 A

0.15 A

0.5 A

120 mV

 

 

 

 

 

 

 

NOTES:

Total continuous output power should not exceed 320 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

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Technical Reference Guide