Monolithic Power Systems. has filed a patent for a controller in an isolated switching converter. The controller includes an ON-time control circuit that controls the second ON-time of the secondary switch based on various parameters. This innovation aims to improve the efficiency and performance of isolated switching converters. GlobalData’s report on Monolithic Power Systems gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Monolithic Power Systems, Power MOSFET SMPS was a key innovation area identified from patents. Monolithic Power Systems's grant share as of January 2024 was 76%. Grant share is based on the ratio of number of grants to total number of patents.
Controller for isolated switching converter with on-time control circuit
The patent application (Publication Number: US20240039389A1) describes a controller designed for use in an isolated switching converter, which includes a transformer with primary and secondary windings, as well as primary and secondary switches. The controller features an ON-time control circuit that regulates the timing of the secondary switch based on various input parameters, such as the drain terminal voltage of the secondary switch, the output voltage of the converter, and an external resistor. Additionally, the controller includes circuits for primary on enable, isolation, zero-cross detection, primary logic, primary off detection, current zero cross detection, quasi-resonant control, and secondary logic to ensure efficient operation of the switching converter.
Furthermore, the patent application details a control method for the isolated switching converter, outlining the steps involved in managing the secondary switch's ON-time based on the drain terminal voltage, output voltage, and external resistor resistance. The method also covers processes such as providing primary on enable signals, generating synchronous signals, detecting primary switch status, controlling secondary switch operations, and implementing ON-time control signals. By incorporating these control mechanisms and methods, the isolated switching converter can achieve optimal performance and efficiency in converting electrical power. The patent application also mentions the use of GaN or SiC switches in the primary and secondary switch components for enhanced functionality and reliability.
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