CPC G09G 3/20 (2013.01) [H02M 1/4208 (2013.01); H02M 1/44 (2013.01); H02M 3/33571 (2021.05); G09G 2330/021 (2013.01); G09G 2330/06 (2013.01)] | 18 Claims |
1. A power supply control circuit, applied to a display device comprising a control circuit board and a backlight module, wherein the power supply control circuit comprises a power factor correction circuit, a resonance circuit, a first rectification filter circuit, a second rectification filter circuit, a communication circuit and a control system;
an output terminal of the power factor correction circuit is connected to an input terminal of the resonance circuit; a first output terminal of the resonance circuit is connected to a power input terminal of the backlight module through the first rectification filter circuit, a second output terminal of the resonance circuit is connected to a power input terminal of the control circuit board through the second rectification filter circuit, and the second output terminal of the resonance circuit is connected to a second power input terminal of the communication circuit through the second rectification filter circuit; a third output terminal of the resonance circuit is connected to a power input terminal of the control system, and the third output terminal of the resonance circuit is further connected to a first power input terminal of the communication circuit; the control circuit board is in communication connection with the control system through the communication circuit; a first signal output terminal of the control system is connected to a signal input terminal of the power factor correction circuit; and a second signal output terminal of the control system is connected to a signal input of the resonance circuit.
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