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Technical Product Specification

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Power Sub-system Intel® Server Chassis SC5650 TPS
Revision 1.2
Intel order number E39531-004
56
Note: 3.3V/5V combined power limit: 170 W max
Table 56. DC/DC Converters Load Ratings
+12VDC Input DC/DC Converters
+3.3V Converter +5V Converter -12V Converter
MAX Load 24.0A 30.0A 0.3A
MIN Static / Dynamic Load 0A 0A 0A
1. Maximum continuous total DC output power should not exceed 570 W.
2. Peak power and current loading shall be supported for a minimum of 12 seconds.
3. Combined 3.3V and 5V power shall not exceed 170 W.
2.3.2.4 DC/DC Converters Voltage Regulation
The DC/DC converters’ output voltages stay within the following voltage limits when operating at
steady state and dynamic loading conditions. These limits include the peak-peak ripple/noise.
All outputs are measured with reference to the return remote sense signal (ReturnS). The 3.3V
and 5V outputs are measured at the remote sense point; all other voltages are measured at the
output harness connectors.
Table 57. Voltage Regulation Limits
Converter Output Tolerance MIN NOM MAX UNITS
+ 3.3VDC - 5% / +5% +3.14 +3.30 +3.46 V
DC
+ 5VDC - 5% / +5% +4.75 +5.00 +5.25 V
DC
+ 12VDC
(12V1/2/3/4)
- 5% / +5% +11.40 +12.00 +12.60 V
DC
- 12VDC - 10% / +10% -10.80 -12.00 -13.20 V
DC
+ 5VSB See Power Supply Specification; measured at the power distribution board
harness connectors.
2.3.2.5 DC / DC Converters Dynamic Loading
The output voltages remain within limits specified for step loading and capacitive loading as
specified in the following table. The load transient repetition rate is tested between 50 Hz and 5
kHz at duty cycles ranging from 10%-90%. The load transient repetition rate is only a test
specification. The Δ step load may occur anywhere between MIN load and MAX load conditions.
Table 58. Transient Load Requirements
Output Max Δ Step Load Size Max Load Slew Rate Test Capacitive Load
+ 3.3VDC
5.0A 0.25 A/μs 250 μF
+ 5VDC
6.0A 0.25 A/μs 400 μF
+12VDC (12V1/2/3/4/5) See the Power Supply specification for details.
- 12VDC
Not rated Not rated μF
+5VSB See the the Power Supply specification for details.