Design and Environmental Specifications Intel® Server Boards S3200SH/S3210SH TPS
Revision 1.8 101
Intel Order Number: E14960-009
8.2.2 Dynamic Loading
The output voltages should remain within limits specified for the step loading and capacitive
loading specified in Table 70. The load transient repetition rate should be tested between 50Hz
and 5 kHz at duty cycles ranging from 10%-90%. The load transient repetition rate is only a test
specification. The step load may occur anywhere within the MIN load to the MAX load
conditions.
Table 70. Transient Load Requirements
Output Step Load Size
(See note 2)
Load Slew Rate Test capacitive Load
+3.3V 5.0A
0.25 A/sec 250 F
+5V 6.0A
0.25 A/sec 400 F
12V 9.0A
0.25 A/sec 500 F
+5VSB 0.5A
0.25 A/sec 20 F
Notes:
1. Step loads on each 12V output may happen simultaneously.
2. For Load Range 2 (light system loading), the tested step load size should be 60% of those
listed.
8.2.3 AC Line Transient Specification
AC line transient conditions are defined as “sag” and “surge” conditions. “Sag” conditions are
also commonly referred to as a “brownout”; these conditions are defined as the AC line voltage
dropping below nominal voltage conditions. “Surge” is defined to refer to conditions when the
AC line voltage rises above nominal voltage.
The power supply should meet the requirements under the following AC line sag and surge
conditions.
Table 71. AC Line Sag Transient Performance
AC Line Sag
Duration Sag Operating AC Voltage Line Frequency Performance Criteria
Continuous 10% Nominal AC Voltage ranges 50/60Hz No loss of function or performance.
0 to 1 AC
cycle
95% Nominal AC Voltage ranges 50/60Hz No loss of function or performance.
> 1 AC cycle >30% Nominal AC Voltage ranges 50/60Hz Loss of function acceptable, self-
recoverable.
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