Roger Feng

Title: The Innovations of Roger Feng

Introduction

Roger Feng is an accomplished inventor based in Shanghai, China. He has made significant contributions to the field of electrical engineering, particularly in the design of high power switching regulators. His innovative approach has led to the development of a unique method that enhances the accuracy of current limit testing.

Latest Patents

Roger Feng holds a patent for a "Method and apparatus for current limit test for high power switching regulator." This invention introduces a method that can reuse at least one pin in demultiplexing a voltage from a pin. The method is designed to set an accurate current limit threshold during the design for test (DFT) phase, allowing for precise trimming code settings of a current limiter. By utilizing the property of power MOSFETs, which exhibit nearly the same conductive resistance at high drain currents, the current limit threshold can be accurately determined. This is achieved by measuring the drain-to-source voltage at a small current sink, which is less than the maximum current that automated test equipment (ATE) can provide. The accurate voltage can be measured through Kelvin sensing of the drain and source pins connected to a current sense circuit.

Career Highlights

Roger Feng is currently employed at Analog Devices Technology, where he continues to innovate and develop cutting-edge technologies. His work has been instrumental in advancing the capabilities of high power switching regulators, making them more efficient and reliable.

Collaborations

Roger has collaborated with talented coworkers, including Junxiao Chen and Bin Shao, who have contributed to his projects and innovations.

Conclusion

Roger Feng's contributions to the field of electrical engineering, particularly through his patented method for current limit testing, showcase his innovative spirit and dedication to advancing technology. His work at Analog Devices Technology continues to influence the industry positively.