A kind of electrifying timing sequence control system of PCIE board and method

The invention provides a kind of electrifying timing sequence control system and method for PCIE board, described system comprises: adaptive circuit, delay circuit, overheating protection unit and restoring circuit; Described method carries out delays time to control by direct supply 1 (P1) to remaining direct supply.The electrifying timing sequence control system of PCIE board provided by the invention and method; allow board complete at short period T power on; ensure that each power supply of subcard needs completes in a certain order to power on; subcard is adopted to support slot and external power supply dual power supply adaptive mode; support hot reset function; and after overheating protection, after subcard temperature drops to safe range, subcard recovers normal work and automatically without the need to restarting mainboard.