Company Filing History:
Years Active: 2019-2020
Title: Qifeng Shi: Innovator in Power Conversion Technology
Introduction
Qifeng Shi is a notable inventor based in Campbell, CA (US), recognized for his contributions to power conversion technology. With a total of 4 patents, he has made significant advancements in the field, particularly in the design and functionality of switching power supplies.
Latest Patents
One of his latest patents is titled "Adaptive startup for switching power converter." This invention provides a switching power supply controller that measures input voltage through an application of a load during an input voltage measurement period. This measurement occurs after the switching power supply is connected to an AC mains. The controller adjusts the start-up delay period based on the measured input voltage, ensuring that the start-up delay remains substantially constant despite variations in the AC line voltage.
Another significant patent is the "Flyback converter controller with single pin detection of over-voltage and auxiliary winding faults." This invention features a flyback converter controller that utilizes a single terminal to sense over-voltage faults for an input voltage and detect open circuit faults for an auxiliary winding. A voltage divider provides a divided version of the input voltage to the single terminal, allowing the controller to compare the voltage to at least one over-voltage threshold for fault detection.
Career Highlights
Qifeng Shi is currently employed at Dialog Semiconductor GmbH, where he continues to innovate in the field of power electronics. His work has contributed to the development of more efficient and reliable power supply systems.
Collaborations
He collaborates with talented coworkers, including Qiu Sha and Guang Feng, who share his passion for advancing technology in power conversion.
Conclusion
Qifeng Shi's innovative work in power conversion technology, highlighted by his recent patents, showcases his commitment to enhancing the efficiency and reliability of power supply systems. His contributions are significant in the ongoing evolution of this critical field.