Chao Deng

Title: Chao Deng: Innovator in Power Supply Technology

Introduction

Chao Deng is a prominent inventor based in Shanghai, China. He has made significant contributions to the field of power supply technology, particularly through his innovative designs and patents. His work focuses on enhancing the efficiency and performance of power supply circuits.

Latest Patents

Chao Deng holds a patent for a "High power-factor control circuit and power supply." This invention involves a switched-mode power supply (SMPS) that receives a rectified periodic input line voltage and is configured to provide a regulated output. The design features a power switch with a constant turn-on time within a given cycle of the rectified input line voltage. The maximum value of the envelope of peak currents through the power switch is determined and compared with a reference value, allowing for adjustments in the power switch turn-on time in subsequent cycles. This innovation ensures that the output of the power supply is regulated to a target output value, with the current remaining in phase with the periodic input line voltage, resulting in a high power factor. Notably, no sampling of the line voltage is required to maintain this high power factor. The controller chip can operate with as few as five pins, or alternatively, a seven-pin controller chip can utilize two external resistors for selecting operations in either Boundary Conduction Mode (BCM) or Discontinuous Conduction Mode (DCM).

Career Highlights

Chao Deng is currently employed at Shanghai Sim-bcd Semiconductor Manufacturing Co., Ltd. His role at the company allows him to apply his expertise in power supply technology and contribute to the development of advanced semiconductor solutions.

Collaborations

Throughout his career, Chao has collaborated with notable colleagues, including Na Liu and Zeqiang Chen. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Chao Deng's contributions to power supply technology through his patent and work at Shanghai Sim-bcd Semiconductor Manufacturing Co., Ltd. highlight his role as a key innovator in the field. His advancements in high power-factor control circuits are paving the way for more efficient power supply solutions.