Yangwei Yu

Title: Innovations of Yangwei Yu

Introduction

Yangwei Yu is a notable inventor based in Hangzhou, China. He has made significant contributions to the field of electrical engineering, particularly in power supply technologies. With a total of 4 patents, his work reflects a commitment to advancing the efficiency and functionality of electronic devices.

Latest Patents

One of Yangwei Yu's latest patents is a DC-DC converter with a pulse modulation control circuit. This innovative control circuit includes an error amplifier, a voltage-to-current conversion circuit, an oscillator circuit, and a pulse frequency modulation (PFM) control circuit. The error amplifier generates a difference voltage based on the output voltage of the DC-DC converter circuit and a reference voltage. The voltage-to-current conversion circuit then converts this difference voltage into a difference current. The oscillator circuit generates a clock signal at a predetermined frequency for pulse width modulation, while the PFM control circuit disables the oscillator circuit based on the difference current for PFM operation.

Another significant patent is a switch-mode power supply with frequency adjustment in discontinuous conduction mode. This invention aims to reduce variation in the switching frequency of the power supply with changes in loading. The switch-mode power supply includes an inductor, a transistor, and control circuitry. The transistor is coupled to the inductor and is configured to charge it. The control circuitry turns off the transistor for a first time period, which is a function of the voltage across the inductor during that time. Additionally, the control circuitry determines whether the switch-mode power supply is operating in continuous or discontinuous conduction mode and adjusts the timing accordingly.

Career Highlights

Yangwei Yu has worked with prominent companies in the industry, including Texas Instruments and Chengdu Monolithic Power Systems. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.

Collaborations

Throughout his career, Yangwei Yu has collaborated with talented individuals such as Jian Liang and Chen Feng. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Yangwei Yu's contributions to the field of electrical engineering through his patents and collaborations highlight his innovative spirit and dedication to advancing technology. His work continues to influence the development of efficient power supply systems.