Intel SC5300BD2 Product Specification - Page 38
W Protection Circuits
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Intel® Server Chassis SC5300 5U Kit TPS Chassis Power Subsystem 3.2.5.4 Stand By Operation Fan-less operation requirement is the power supply's ability to work indefinitely in stand-by mode: with power on, power supply off and the 5VSB at full load (=2A) under environmental conditions (temperature, humidity, altitude). 3.2.5.5 Voltage Regulation The output voltages must stay within the following voltage limits when operating at steady state and dynamic loading conditions. All outputs are measured with reference to the return remote sense signal (ReturnS). The 12V and 5VSB outputs are measured at the power distribution output connectors referenced to return source. Table 18. Voltage Regulation Limits Parameter + 12V + 5VSB Tolerance MIN -4%/+5% +11.52 -4%/+5% +4.80 NOM +12.00 +5.00 MAX +12.60 +5.25 Units Vrms Vrms 3.2.6 730-W Protection Circuits Protection circuits inside the power supply shall cause only the power supply's main output to shutdown. If the power supply latches off due to a protection circuit tripping, an AC cycle OFF for 15 sec and a PSON# cycle HIGH for 1 sec shall be able to reset the power supply. 3.2.6.1 Over Current Protection The power supply shall have over current limit to prevent the +12V output. If the current limits are exceeded, the power supply shall shutdown and latch off. The latch is 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. The 5VSB shall also be protected during over current or shorted conditions so that no damage can occur to the power supply. 3.2.6.2 Over Voltage Protection and Over Temperature The power supply shall shutdown and latch off after an over voltage condition occurs. This latch is cleared by toggling the PSON# signal or by an AC power interruption. The power supply is protected against over temperature conditions caused by loss of fan cooling or excessive ambient temperature. In an over temperature protection (OTP) condition the power supply 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. Revision 1.31 37
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