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Years Active: 2025
Title: Yi Chang: Innovator in Power Conversion Technology
Introduction
Yi Chang is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of power conversion technology, particularly through his innovative designs and patents. His work focuses on enhancing the efficiency and performance of power electronic devices.
Latest Patents
Yi Chang 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, Yi Chang has worked with prominent organizations, including 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
Yi Chang has collaborated with esteemed colleagues such as Wei-Hua Chieng and Da-Jeng Yao. These partnerships have contributed to the advancement of technology in their respective fields.
Conclusion
Yi Chang's contributions to power conversion technology through his patent and collaborations highlight his role as an influential inventor. His work continues to impact the efficiency of power electronic devices, paving the way for future innovations in the industry.