Circuit Board Fault Monitoring and Logging Different Power Supplies

Circuit Board Fault Monitoring and Logging Reference Design. for systems using Microprocessors or computers there are usually numerous power supplies. If a power supply fails the power manager circuits may, as a minimum, force a shut-down. for maintenance and trouble shooting it is very desirable to know which power supply failed and the type of failure condition (over-voltage or under-voltage). This Reference Design for the Platform Manager presents a solution that records the supply fault condition in non-volatile memory so the fault can read back at a later time. This solution is fast, reliable and cost effective because it is based on a Platform Manager and external non-volatile SPI Flash memory