Power control circuit, method, apparatus, and power system

Abstract

The present invention provides a power control circuit, method, apparatus, and power system. The power control circuit, which is configured to automatically power on an embedded SoC when the power failure is recovered afterward, includes a power supply circuit, a storage circuit, and a control circuit. The power supply circuit, which is configured to be coupled to a first power source and the control circuit, provides a first power signal to the control circuit and the storage circuit. The storage circuit, which is configured to be coupled to the first power source and the control circuit, retains stored state parameters when the first power source is not supplied. The control circuit, which is configured to be coupled to a first signal source, controls the embedded SoC to power on according to one or more of the following: the state parameters, the first power signal, and a first signal provided by the first signal source. Thus, the power supply reliability of the embedded SoC of the present invention can be improved without requiring manual reset after power failure, thereby improving the system efficiency.

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