Zhimin Hu

Title: Innovations of Zhimin Hu in Power Supply Technology

Introduction

Zhimin Hu is a notable inventor based in Shanghai, China, recognized for his contributions to power supply technology. With a total of three patents to his name, he has made significant advancements in the field, particularly in the design and efficiency of power supply systems.

Latest Patents

One of his latest patents is titled "Power supply for LED lamp with TRIAC dimmer." This invention features a bleeder circuit in a switched mode power supply (SMPS) that provides a compensation current when the loop current drops below the holding current of the TRIAC. This innovation alleviates the light flickering problem commonly associated with LED lamps. Additionally, it incorporates automatic power factor correction, which ensures that the output current is in phase with the input voltage. This improvement not only enhances the efficiency of the power supply but also reduces power loss in the bleeder circuit.

Another significant patent by Zhimin Hu is the "Method and circuit for constant current buck converter." This invention includes a buck converter circuit within an SMPS that features a first inductor coupled to an output terminal and a switch device. The controller regulates the output current by controlling the peak current in the first inductor based on the ratio between the instantaneous voltage and the average voltage at the negative output terminal. This design allows the SMPS to operate in a boundary conduction mode (BCM), maintaining a constant average output current that is largely independent of both input and output voltages while providing a high power factor.

Career Highlights

Zhimin Hu has worked with prominent companies in the semiconductor industry, including Shanghai Sim-bcd Semiconductor Manufacturing Co., Ltd. and Bcd Semiconductor Manufacturing Limited. His experience in these organizations has contributed to his expertise in power supply technologies.

Collaborations

Zhimin has collaborated with notable coworkers such as Qun Li and Lei Cheng, further enhancing his innovative capabilities through teamwork and shared knowledge.

Conclusion

Zhimin Hu's contributions to power supply technology through his patents demonstrate his commitment to innovation and efficiency. His work continues to influence the field, making significant strides in the development of advanced power supply systems.