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JWJOULWATT has been granted an invention patent for "unidirectional conduction circuit, bridge drive circuit, and switching power supply"

Article Source：Qichacha | Author：Securities Star | Issuing Time：2024.05.25
Securities Star News: According to data from Qichacha, JWJOULWATT (688141) has obtained a new invention patent authorization, titled "Unidirectional Conduction Circuit, Bridge Drive Circuit, and Switching Power Supply". The patent application number is CN202410195083.8, and the authorization date is May 24, 2024.

Patent Abstract: The present invention discloses a unidirectional conduction circuit, a bridge driving circuit, and a switching power supply. The unidirectional conduction circuit is applied to a bridge driving circuit. The bridge driving circuit includes a high side driver and a first capacitor, with the first end of the first capacitor connected to the reference potential point of the high side driver, and the second end providing power supply voltage to the high side driver. The unidirectional conduction circuit includes a first switching transistor and a current limiting circuit. The first end of the first switching transistor is connected to the second end of the first capacitor, and the second end of the first switching transistor is connected to the power source end of the bridge driving circuit through a current limiting circuit; When the first switching transistor is turned on, the power supply terminal charges the first capacitor through a current limiting circuit and the first switching transistor. The current limiting circuit is used to limit the charging current flowing to the first capacitor. Through the above settings, the risk of failure and performance degradation caused by reverse recovery of the bootstrap diode is avoided.


Attached drawings of patent abstract

Since the beginning of this year, JWJOULWATT has obtained 45 new patent authorizations, an increase of 164.71% compared to the same period last year. Based on the financial data of the company's 2023 annual report, the company invested 499 million yuan in research and development, a year-on-year increase of 63.88%.
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