Haishi Wang

Title: Haishi Wang: Innovator in Power Systems

Introduction

Haishi Wang is a prominent inventor based in Chengdu, China, known for his contributions to power systems technology. With a total of four patents to his name, he has made significant advancements in the field of electrical engineering.

Latest Patents

One of Haishi Wang's latest patents is a supply voltage generating method for a driver circuit in a power system. This invention includes a power input terminal that receives an input voltage, a system output terminal that provides a system voltage, a switching circuit, a bootstrap capacitor, and a first driver circuit with a power terminal. The switching circuit operates in buck mode to convert the input voltage to the system voltage or in boost mode to convert the system voltage to a boost output voltage. The bootstrap capacitor generates a bootstrap voltage at a bootstrap terminal. The method involves generating an input pump voltage based on the input voltage and the boost output voltage, creating a first supply voltage based on the bootstrap voltage and the input pump voltage, and supplying the first supply voltage to the power terminal of the first driver circuit.

Another notable patent is a control circuit having a power limit for an AC-DC converter and integrated circuits thereof. This control circuit features a first sensing circuit with an auxiliary winding that senses a voltage on an inductive element of the converter to produce a first sensing signal. It also includes a second sensing circuit that measures the current flowing through the inductive element to provide a second sensing signal, along with a power limit circuit. The power limit circuit generates a power indication signal that reflects the input power of the converter based on the first and second sensing signals. If the power indication signal exceeds a power threshold, a controllable switch of the converter is turned off.

Career Highlights

Haishi Wang has worked with notable companies such as Monolithic Power Systems, Inc. and Chengdu Monolithic Power Systems Co., Ltd. His experience in these organizations has contributed to his expertise in power systems and circuit design.

Collaborations

Throughout his career, Haishi has collaborated with talented individuals, including Rui Wang and Zhengwei Zhang. These partnerships have fostered innovation and development in their respective fields.

Conclusion

Haishi Wang's contributions to power systems through his patents and professional experience highlight his role as an influential inventor. His work continues to impact the field of electrical engineering significantly.