MPWC H801 MPWC Dual DC Power Card 48V-60V 10A for Huawei MA5608T OLT

The H801MPWC board is a power board with dual DC power inputs.
The H801MPWC board leads in the -48 V DC power to the device. 

Overview

• Two -48 V DC inputs
• Filtering and current-limiting for the power input port
• Detection of input undervoltage, power supply availability, and power supply faults
• Reporting of the protection alarm together with board ready status
• Indication of power status

Working Principle

• The H801MPWC board leads in one -48 V power input through one 3V3 power connector, and transfers the power to the filter circuit, then to the current limit protection circuit, and finally to the backplane, supplying power to the subrack and other boards.
• The detection and reporting circuit checks the protection fuse for any faults, and reports the detection signals together with the board ready status signal to the control board. The control board indicates these detection signals through indicators.
• The detection and reporting circuit checks for input undervoltage and availability of power supply.
• The E2PROM circuit stores the board manufacture information.
• The H801MPWC board leads in the 5 V/3.3 V power from the backplane to power certain internal chips of the board.