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Kivi Instruments has applied for a patent for a driver control circuit, its driver control method, and a switching power supply, with a simpler and more reliable circuit structure

Article Source：China National Intellectual Property Administration | Author：Financial Sector | Issuing Time：2024.04.26
On April 26, 2024, the financial sector reported that, according to the announcement of the China National Intellectual Property Administration, Shenzhen Kivi Instruments Electronics Co., Ltd. applied for a patent entitled "drive control circuit and its drive control method and switching power supply", with the publication number of CN117937935A and the application date of November 2023.


Logo of Kivi Instruments

The patent abstract shows that the present invention proposes a driving control circuit, a driving control method, and a switching power supply.

The driving control circuit is used to generate the first and second driving signals, thereby driving the first and second switching tubes in the switching power supply.

The drive control circuit includes a regulating circuit and a driving circuit.

The input end of the regulating circuit is used to receive a current detection signal representing the excitation current of the resonant cavity, and the regulating circuit is used to generate a characterization signal representing the negative excitation current based on the second driving signal and current detection signal.

The adjustment circuit is also used to compare the characterization signal with the reference signal, and generate a second adjustment signal to adjust the conduction time of the second switching transistor.

The driving circuit is coupled to the output end of the regulating circuit, and the driving circuit is used to generate a second driving signal based on the second regulating signal.

The present invention proposes a driving control circuit and its driving control method, as well as a switching power supply, which does not require the use of auxiliary windings to achieve soft switching control and has a simpler and more reliable circuit structure.
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