Intel
®
Server Board S5500BC TPS Power and Environmental Specifications
Revision 1.8 Intel order number: E42249-009 113
9.2.16 Protection Circuits
Protectio
shutdown. If the power supply latches off due to a protection circuit tripping, an AC cycle OFF
for 15sec and a PSON# cycle HIGH for 1sec shall be able to reset the power supply.
9.2.17 Current Limit (OCP)
The power supply shall have current limit to prevent the +3.3V, +5V, and +12V outputs from
exceeding the values shown in the following table. If the current limits are exceeded the power
supply shall shutdown and latch off. The latch will be cleared by toggling the PSON# signal or
by an AC power interruption. The power supply shall not be damaged from repeated power
cycling in this condition. -12V and 5VSB shall be 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 73. Over Current Protection (OCP)
OVER CURRENT LIMIT (IOUT LIMIT)
110% minimum (= 16.5A) ; 150% maximum (= 22.5A)
110% min (= 11.0A); 150% max (= 15.0A)
9.2.18 Over Voltage Protection (OVP)
The power supply over voltage protection shall be locally sensed. The power supply 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 following table contains the over
voltage limits. The values are measured at the output of the po The
voltage shall never exceed the maximum levels when measured at the power pins of the power
supply 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 power supply connector.
Exception: +5VSB rail should be able recover after its over voltage condition occurs.
Table 74. Over Voltage Protection (OVP) Limits
To Next Page
Loading...
Need help?
General
