Ying-Chieh Su

Title: Innovations of Ying-Chieh Su

Introduction

Ying-Chieh Su is a notable inventor based in Taipei, Taiwan. He has made significant contributions to the field of power conversion technology. With a total of 4 patents to his name, Su's work focuses on enhancing the efficiency and functionality of power converters.

Latest Patents

One of his latest patents is titled "Flyback power converter having emulated demagnetized signal and switching control circuit and control method thereof." This invention involves a flyback power converter that utilizes a first transistor to switch a transformer, generating a primary switching current and an output voltage. A second transistor is employed to create a circulated current, achieving zero voltage switching (ZVS) of the first transistor. The converter actively forces at least one switching cycle to operate in discontinuous conduction mode (DCM) when the primary switching current is determined to be in non-DCM operation for a predetermined number of cycles. It generates a demagnetized signal that emulates the demagnetized time of the transformer for controlling the second transistor during non-DCM operation.

Another significant patent is the "Resonant half-bridge flyback power converter with skipping cycles and control method thereof." This invention features a half-bridge circuit formed by a first and second transistor, along with a transformer and a resonant capacitor connected in series. The switching control circuit generates driving signals to control the transistors for switching the transformer and producing an output voltage. The circuit is designed to skip a resonant pulse of the second driving signal during a skipping cycle period when the output power falls below a predetermined threshold.

Career Highlights

Ying-Chieh Su is currently employed at Richtek Technology Corporation, where he continues to innovate in the field of power electronics. His work has been instrumental in advancing the technology used in power converters, making them more efficient and reliable.

Collaborations

Su has collaborated with notable colleagues, including Ta-Yung Yang and Yu-Chang Chen, contributing to various projects and innovations within the company.

Conclusion

Ying-Chieh Su's contributions to power conversion technology through his patents reflect his expertise and commitment to innovation. His work continues to influence the industry, paving the way for more efficient power solutions.