Yueh-Tsung Shieh

Title: Innovations of Yueh-Tsung Shieh in Power Conversion Technology

Introduction

Yueh-Tsung Shieh is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of power conversion technology, particularly through his innovative patent related to D-mode GaN transistors. His work has implications for improving the efficiency of power systems.

Latest Patents

Yueh-Tsung Shieh holds a patent for a D-mode GaN transistor synchronous rectifier and power converter. This invention includes a power switching module, a peak detection module, and a gate driver module. The peak detection module is designed to store energy when the negative end of the secondary side winding of the power converter is at a high voltage. The power switching module consists of a first switch and a D-mode GaN HEMT as a second switch connected in series. The energy is supplied to the module gate of the power switching module through the gate driver module, ensuring that the first switch remains turned on. The gate driver module also conducts the module gate and the module source when the positive end of the secondary side winding is at a low voltage, allowing a clamp circuit to pull the gate-source voltage of the second switch below threshold, effectively turning it off. This synchronous rectifier replaces conventional diode rectifiers, resulting in lower conduction loss and reduced response ringing.

Career Highlights

Throughout his career, Yueh-Tsung Shieh has worked with prominent organizations such as Acbel Polytech Inc. and Tsinghua University. His experience in these institutions has allowed him to develop and refine his innovative ideas in power electronics.

Collaborations

Yueh-Tsung Shieh has collaborated with talented individuals in his field, including Wei-Hua Chieng and Yi Chang. These collaborations have contributed to the advancement of technology in power conversion systems.

Conclusion

Yueh-Tsung Shieh's contributions to the field of power conversion technology through his innovative patent demonstrate his expertise and commitment to advancing electrical engineering. His work continues to influence the efficiency of power systems today.