SOC power supply power-on and power-off time sequence control method

The invention discloses an SOC power supply power-on and power-off time sequence control method, and the system architecture corresponding to the method comprises an SOC power supply, a battery module, a key on-off circuit, n power converters DCDC1 to DCDCn, and n-1 time sequence control circuits. The battery module is connected with the plurality of power converters, the key startup and shutdowncircuit is connected with the SOC power supply through the power converters DCDC1, and the n-1 time sequence control circuits are connected with the SOC power supply through DCDC2 to DCDCn. Accordingto the invention, the power-on time sequence of the plurality of power supplies of the SOC is controlled without adding a single chip microcomputer or a CPLD for time sequence control, so that the manpower and the cost are saved. The method is completely hardware control, and software intervention is not needed. The debugging efficiency is greatly improved, the debugging period is shortened, and the material cost of the si