Power switching circuit and switching method thereof

• Main Authors: NIAN JIARONG, SU ZHIKAI
• Format: Patent
• Language: Chinese; English
• Published: 31.12.2019
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

The invention provides a power switching circuit and a switching method thereof. The power switching circuit comprises a transformer, a rectifying unit, a first switching unit, a second switching unitand a feedback unit. The transformer is used for outputting a first power signal; and the transformer has a center tap end. The rectifying unit is coupled to the transformer, receives the first powersignal and outputs a second power signal. The first switching unit is coupled to the rectifying unit and the center tap end of the transformer. The second switching unit is coupled to the rectifyingunit and the first switching unit. The feedback unit receives the second power signal and is used for controlling the first switching unit and the second switching unit. 本发明提出一种电源切换电路及其切换方法，电源切换电路包含变压器、整流单元、第一切换单元、第二切换单元及回授单元。变压器用以输出一第一电力信号，变压器具有中间抽头端。整流单元耦接变压器，整流单元接收第一电力信号并输出一第二电力信号。第一切换单元耦接整流单元及变压器的中间抽头端。第二切换单元耦接整流单元及第一切换单元。回授单元接收第二电力信号并用以控制第一切换单元及第二切换单元。