Intel S2600CW - Protection Circuits; Table 84. PDB over Current Protection Limits;240 Va Protection; Table 85. over Voltage Protection (OVP) Limits

Intel® Server Board S2600CW Family TPS Power Supply Specification Guidelines
Revision 2.4
147
10.3.3 Protection Circuits
The PDB shall shut down all the DC/DC converters on the PDB and the power supply (by
PSON) if there is a fault condition on the PDB (OVP or OCP). If the PDB DC/DC converter
latches-off due to a protection circuit tripping, an AC cycle OFF for 15sec min or a PSON#
cycle HIGH for 1sec shall be able to reset the power supply and the PDB.
10.3.3.1 Over Current Protection (OCP)/240VA Protection
Each DC/DC converter output on PDB has individual OCP protection circuits. The PS+PDB
combo shall shutdown and latch off after an over current condition occurs. This latch shall be
cleared by toggling the PSON# signal or by an AC power interruption. The values are
measured at the PDB harness connectors. The DC/DC converters shall not be damaged from
repeated power cycling in this condition. Also, the +12V output from the power supply is
divided on the PDB into 4 channels and +12V4 is limited to 240VA of power. There are current
sensors and limit circuits to shut down the entire PS+PDB combo if the limit is exceeded. The
limits are listed in below table. -12V and 5VSB is protected under over current or shorted
conditions so that no damage can occur to the power supply. Auto-recovery feature is a
requirement on 5VSB rail.
Table 84. PDB Over Current Protection Limits/240VA Protection
Output Voltage
Min OCP Trip Limits
Max OCP Trip
Limits
Usage
Connectors
+3.3V
27A
32A
PCIe, Misc
P1, P5, P6
+5V
27A
32A
PCIe, HDD, Misc
P1, P5, P6
+12V1
91A
100A
CPU1 + memory Fans,
Misc
P1-P3, P12
+12V2
76A
100A
HDD and peripherals
P13-P16
+12V3
18A
20A
P5-P11
10.3.3.2 Over Voltage Protection (OVP)
Each DC/DC converter output on PDB have individual OVP protection circuits built in and it
shall be locally sensed. The PS+PDB combo shall shutdown and latch off after an over voltage
condition occurs. This latch shall be cleared by toggling the PSON# signal or by an AC power
interruption. The table below displays the over voltage limits. The values are measured at the
PDB harness connectors. The voltage shall never exceed the maximum levels when measured
at the power pins of the output harness connector during any single point of fail. The voltage
shall never trip any lower than the minimum levels when measured at the power pins of the
PDB connector.
Table 85. Over Voltage Protection (OVP) Limits
Output Voltage
OVP Min (v)
OVP Max (v)
+3.3V
3.9
4.8
+5V
5.7
6.5