Intel® Server Platform SR6850HW4 TPS | Power Supply |
5.4.7Current Sharing
Outputs of two supplies that are connected in parallel must meet the regulation requirements of a single supply. Under normal operation with two supplies running in parallel, the outputs must share the load current. If one of the supplies fails, the remaining supply must pick up the entire load without any of the outputs dropping out of regulation. A defective supply that is connected to the output voltage bus has no adverse effect on the operation of the remaining functional supply.
Table 35. Output Current Sharing
Output Level | Output Sharing |
+3.3Vstby | Not required |
+12V | Active |
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5.4.8I2C Devices
All I2C devices are powered from the cathode side of the +3.3Vstby OR’ing diode. This allows the status and FRU data to be read from a power supply that is not powered on or has some other
fault. Protection is provided so if a power supply fault occurs it does not take down the +3.3Vstby bus.
Address locations will be determined by external settings through P1, pin A5. The 0xA1 and 0xA2 address will be wired high on the power supply. (NE1617A does not have an 0xA2 address). The alert signal from (only) the I/O port will be through P1, pin D5.
5.4.8.1FRU Data
The power supply contains a serial EEPROM. The address is either 0xAC or 0xAE, depending on address bit 0xA0.
Revision 1.0 | 59 |
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