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FM obtained invention patent authorization: "A primary feedback switching power supply control chip, control system, and charger"

Article Source：Qichacha | Author：Securities Star | Issuing Time：2024.05.20
Securities Star News: According to data from Qichacha, FM (300671) has obtained a new invention patent authorization, titled "A Primary Feedback Switching Power Supply Control Chip, Control System, and Charger". The patent application number is CN201810736792.7, and the authorization date is May 17, 2024.

Patent Abstract: A primary feedback switch power supply control chip, including a reference voltage unit, comparator unit, voltage monitoring unit, driving unit, switch unit, and rectifier unit. The switch power supply control chip eliminates the need for a self powered time generator, and the self powered time within a single cycle is determined by the voltage feedback pin of the switch power supply control chip. In addition, the energy storage module used to power the switch power supply control chip is connected between the power pin and the voltage feedback pin of the switch power supply control chip, so that whether the control system operates in self powered mode or non self powered mode, the current passes through the voltage sampling module, and the peak current expression through the energy storage transformer module is the same, so as not to affect the performance of the control system in self powered mode, Strong minimum load capacity in constant voltage mode, high constant current accuracy and good linear adjustment rate in constant current mode.


Attached drawings of patent abstract

Since the beginning of this year, FM has obtained 14 new patent authorizations, an increase of 40% compared to the same period last year. Based on the financial data of the company's 2023 annual report, the company invested 182 million yuan in research and development, a year-on-year increase of 19.29%.
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