Yung-I Chang

Title: Yung-I Chang: A Pioneer in Electronic Circuit Innovations

Introduction

Yung-I Chang, an accomplished inventor based in Taipei, Taiwan, has made significant contributions to the field of electronic circuits. With a remarkable portfolio of seven patents, his work predominantly focuses on enhancing the efficiency and reliability of power converters through innovative control systems.

Latest Patents

One of Yung-I Chang's latest patents is the "Sub-harmonic oscillation control in peak current limit mode switching system." This invention comprises an electronic circuit featuring a Pulse Width Modulation (PWM) circuit, a sub-harmonic reduction circuit, and a voltage feedback circuit. The PWM circuit operates based on a voltage control signal, the current of the circuit, and the maximum duty cycle. When functioning in peak current limit mode, the sub-harmonic reduction circuit adjusts feedback signals based on the current characteristics and the PWM signal's duty cycle, ensuring stable operation.

Another significant patent is the "Secondary side controlled control circuit for power converter with synchronous rectifier." This invention presents a control circuit that includes both primary and secondary side controllers. The primary side controller generates a switching signal for the primary side switch, while the secondary side controller manages the synchronous rectifier switch. This dual control mechanism allows for enhanced efficiency and precise performance in power conversion applications.

Career Highlights

Yung-I Chang has garnered substantial experience through his tenure at prominent companies such as Semiconductor Components Industries, LLC and Alpha & Omega Semiconductor Corporation. His work in these organizations has allowed him to develop practical applications for his innovative ideas, resulting in the patents that underscore his career.

Collaborations

Throughout his professional journey, Yung-I Chang has collaborated with esteemed colleagues, including Kuo-Hsien Huang and Chen-Hua Chiu. These partnerships have enabled him to refine his inventions and contribute to advancements within the technology sector.

Conclusion

Yung-I Chang stands as a noteworthy figure in the realm of electronic circuit innovation. His dedication to improving power converters through inventive control systems has not only resulted in numerous patents but also advances the technology landscape, paving the way for future developments in the industry.