Power and Environmental Specifications Intel
®
Server Board S5500BC TPS
Intel order number: E42249-009 Revision 1.8
9.2.19 Over Temperature Protection (OTP)
The power supply will be protected against over temperature conditions caused by loss of fan
cooling or excessive ambient temperature. In an OTP condition the PSU will shutdown. When
the power supply temperature drops to within specified limits, the power supply shall restore
power automatically, while the 5VSB remains always on. The OTP circuit must have built in
hysteresis such that the power supply will not oscillate on and off due to temperature recovering
condition. The OTP trip level shall have a minimum of 4C of ambient temperature hysteresis.
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