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JOULWATT has been granted an invention patent: "A Switching Power Supply and LED Driver Circuit"

Article Source：Qichacha | Author：Securities Star | Issuing Time：2024.04.25
Securities Star News: According to data from Qichacha, JOULWATT (688141) has obtained a new invention patent authorization, titled "A Switching Power Supply and LED Driver Circuit". The patent application number is CN201711181885. X, and the authorization date is April 23, 2024.

Patent abstract

The present invention discloses a switching power supply and LED driver circuit. By sampling the first end of the main power switch tube, the corresponding output voltage can be obtained by utilizing the relationship between input voltage, duty cycle and output voltage, and can be used to determine whether the output voltage is abnormal. As an integrated circuit, the present invention saves output voltage sampling pins; At the same time, the present invention utilizes a reference generation circuit to generate a reference signal, without the need to set a capacitor at that location, which is beneficial for the integration of the present invention.


Attached drawings of patent abstract

Since the beginning of this year, JOULWATT has obtained 37 new patent authorizations, an increase of 236.36% compared to the same period last year. Based on the company's mid year financial data for 2023, the company invested 244 million yuan in research and development in the first half of 2023, a year-on-year increase of 69.88%.
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