CONTROL CIRCUIT WITH HIGH-VOLTAGE STARTUP FUNCTION AND SWITCHING POWER SUPPLY

Abstract: disclosed is a control circuit with a high-voltage startup function and a switching power supply, wherein the control circuit is provided with a startup power supply circuit, a power control circuit and a high-voltage switch device, the high-voltage switch device is configured to implement charging startup of the control circuit in a startup stage through a first current path which is provided by the startup power supply circuit, and to implement power conversion of the switching power supply through a second current path provided by the power control circuit after the startup is completed, thereby achieving time-sharing multiplexing of the high-voltage switch device, reducing the number of the high-voltage switch device in the control circuit, and reducing the static power consumption of the system while simplifying the system.

Inventor(s): Yang YANG

CPC Classification: H02M3/33507 (APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers ; dynamo-electric converters ; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters ))

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