Circuit and method for reducing standby power consumption

Abstract

The invention relates to a circuit and a method for reducing standby power consumption, and provides a power supply control circuit, which is coupled to a power supply conversion circuit for powering an electronic device so as to fully turn off the power supply conversion circuit in a standby state and enter a starting state to turn on the power supply conversion circuit and then hold the power supply conversion circuit in an on state in response to a control signal indication, and comprises a main switch circuit, a trigger circuit and a self-locking circuit, wherein the main switch circuit is coupled to the power supply conversion circuit and used for switching on the power supply conversion circuit when being switched on and switching off the power supply conversion circuit when being switched off, the trigger circuit receives the control signal and is used for responding to the control signal to indicate to enter a starting state so as to trigger the self-locking circuit, and the self-locking circuit is coupled to the main switching circuit and is used for switching on the main switching circuit in response to triggering of the trigger circuit and keeping the main switching circuit in a switching-on state.

Description

technical field [0001] The present disclosure relates to circuits and methods for reducing standby power consumption, and more particularly to power control circuits and methods for reducing standby power consumption. Background technique [0002] As the energy efficiency standards for electronic devices (such as household appliances) become higher and higher, people pay more and more attention to the standby power consumption of electronic devices. [0003] Taking the washing machine as an example, in the standby mode, the power board of the washing machine, the temperature sampling circuit in the display board, MCU (Microcontroller Unit, micro control unit), power chip, etc. will continue to consume electric energy due to the power supply not being cut off, thus increasing the standby time. power consumption. At present, the main method to reduce the standby power consumption of household appliances is to use a power chip and MCU with lower quiescent current or to reduce ...

AI Technical Summary

Problems solved by technology

[0004] One of the objectives of the present invention is to provide a power control circuit and method for reducing standby power consumption for the problem of high standby power consumption of electronic devices

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