Intel SC5300BD2 Product Specification - Page 47
Protection Circuits, Control and Indicator Functions
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UPC - 735858171755
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Chassis Power Subsystem Intel® Server Chassis SC5300 5U Kit TPS Converter Output 5VSB Tolerance -4% / +5% MIN +4.80 NOM +5.00 MAX +5.25 Units VDC 3.3.3.10 Fan-less Operation in Stand-by Mode The power supply will work indefinitely in standby mode with power on, power supply plus power distribution board off, and the 5VSB at full load under environmental conditions (temperature, humidity, altitude) as specified. 3.3.4 Protection Circuits Protection circuits inside the power distribution board (and the power supply) shall cause either the power supply's main +12V output to shutdown, which in turn shuts down the other 3 outputs on the power distribution board or first shut down any of the 3 outputs on the power distribution board, which in turn also shuts down the entire power supply combo. If the power supply latches off due to a protection circuit tripping, an AC cycle OFF for 15 sec min and a PSON# cycle HIGH for 1sec shall be able to reset the power supply and the power distribution board. 3.3.4.1 Over Current Protection (OCP) / 240VA Current Limit Each DC/DC converter output on the power distribution board has individual OCP protection circuits. The power supply will shutdown and latch off after an over current condition occurs. This latch is cleared by toggling the PSON# signal or by an AC power interruption. Also, the +12V output from the power supply is divided on the power distribution board into four channels and each is limited to 240 VA of power. Current sensors and limit circuits shut down the entire power supply if the limit is exceeded. 3.3.4.2 Over Voltage Protection (OVP) Each DC/DC converter output on the power distribution board shall have individual OVP protection circuits built in and 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 values are measured at the power distribution board 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 power distribution board connector. 3.3.5 Control and Indicator Functions The following sections define the input and output signals from the power distribution board. Signals that can be defined as low true use the following convention: signal# = low true 46 Revision 1.31
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