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Kivi Instruments has been granted an invention patent: "Switch control circuit, switch power supply system, and frequency control method based on pin multiplexing"

Article Source:Qichacha | Author:Securities Star | Issuing Time:2024.05.30
Securities Star News: According to data from Qichacha, Kivi Instruments (688045) has obtained a new invention patent authorization, titled "Switching Control Circuit, Switching Power Supply System, and Frequency Control Method Based on Pin Reuse". The patent application number is CN202110280838.0, and the authorization date is May 28, 2024.

Patent Abstract: The present invention discloses a switch control circuit based on pin multiplexing, comprising a first pin and a second pin; The switch control circuit is coupled to a first circuit; The first pin is used to output a pulse width modulation signal to control the first circuit; The second pin is used in the first time stage to detect and obtain the detection current flowing through the first circuit, and in the second time stage to detect and obtain the component characteristics of the first circuit; The switch control circuit controls the pulse width modulation signal based on the detection current and component characteristics, wherein the component characteristics are used to control the system frequency of the first circuit. The present invention also discloses a frequency control method and a switching power supply system. The present invention can monitor and detect changes in current as well as control the frequency of switching tubes through multiplexing of the same pin. In other switching power supply systems where the present invention is applied, the system frequency is controlled by controlling the frequency of the switching transistor.

Since the beginning of this year, Kivi Instruments has obtained 8 new patent authorizations, a decrease of 27.27% compared to the same period last year. Based on the financial data of the company's 2023 annual report, the company invested 159 million yuan in research and development, a year-on-year increase of 38.21%.