Chun-Hua Xia

Title: Innovations of Chun-Hua Xia

Introduction

Chun-Hua Xia is a prominent inventor based in Shanghai, China. He has made significant contributions to the field of power conversion technology. With a total of 5 patents to his name, his work has had a notable impact on the industry.

Latest Patents

One of his latest patents is a "Soft start unit for a power converting device." This invention includes a pulse width modulation circuit, a switch unit, a power output unit, and a voltage start unit. The pulse width modulation circuit increases the start voltage in a soft start mode and operates under the start voltage to generate a pulse width modulation signal. The switch unit receives an input voltage and alternates between forming a charge path and a discharge path according to the pulse width modulation signal. The power output unit converts the input voltage to a core voltage based on the charge and discharge paths. The voltage start unit detects the start voltage and transmits a control signal to interrupt the formation of the discharge path when the start voltage is smaller than the core voltage.

Another significant patent is a "Voltage regulating circuit." This circuit includes an error signal generator, a comparator, a switch unit, a low-pass filter, and a modulating unit. The error signal generator receives a reference voltage signal and a feedback signal, generating an error signal. The comparator generates a pulse width modulation signal based on the error signal and a comparing signal. The switch unit regulates an input voltage signal to produce an output voltage signal according to the pulse width modulation signal. The low-pass filter filters out high frequencies from the output signal, producing the feedback signal. The modulating unit works with the low-pass filter and the error signal generator to regulate the transient voltage of the output voltage signal.

Career Highlights

Chun-Hua Xia is currently employed at Inventec Corporation, where he continues to innovate and develop new technologies. His work has been instrumental in advancing power conversion systems.

Collaborations

He has collaborated with notable coworkers, including Shih-Hao Liu and Xiao-Ru Wu, contributing to various projects and innovations in the field.

Conclusion

Chun-Hua Xia's contributions to power conversion technology through his patents and collaborations highlight his role as a leading inventor in the industry. His innovative solutions continue to shape the future of power electronics.