Company Filing History:
Years Active: 2016-2019
Title: Innovations by Inventor Herman Chen
Introduction
Herman Chen is a notable inventor based in Edmonds, WA (US). He has made significant contributions to the field of power electronics, particularly in the development of advanced control systems for power converters. With a total of 2 patents, his work showcases innovative solutions that enhance the efficiency and performance of electronic devices.
Latest Patents
Herman Chen's latest patents include "Magnetic peak current mode control for radiation tolerant active driven synchronous power converters" and "Automatic enhanced self-driven synchronous rectification for power converters." The first patent focuses on systems and methods for providing peak current mode control (PCMC) for power converters using discrete analog components. It describes a method where a pair of complementary bipolar junction transistors sets a maximum duty cycle for the power converter. The PCMC is achieved through a comparator that compares peak input current to an error feedback signal, terminating a pulse-width modulation (PWM) pulse when the peak input current exceeds the error feedback signal. Additionally, a magnetic signal transformer is utilized to establish a secondary side bias voltage supply and drive an AC-coupled signal for synchronous gate drive.
The second patent presents systems and methods for providing a self-driven synchronous rectification circuit for an active-clamp forward converter. This innovation includes automatically enhancing synchronous MOSFETs and maximizing input voltage range. The gate signals for the synchronous MOSFETs are derived from a unipolar magnetic coupling signal, which is retained for fully enhanced driving at low line voltage. The circuit allows for efficient scaling for higher output voltages, such as 12 volts DC or 15 volts DC, without requiring extra windings on the transformer of the forward converter.
Career Highlights
Herman Chen is currently employed at Crane Electronics, Inc., where he continues to develop cutting-edge technologies in power electronics. His expertise in the field has led to advancements that benefit various applications in electronic devices.
Collaborations
Herman has collaborated with talented coworkers, including Cuon Lam and Sovann Song, contributing to the innovative projects at Crane Electronics, Inc. Their teamwork has fostered an environment of creativity and technical excellence.
Conclusion
Herman Chen's contributions to power electronics through his patents and work at Crane Electronics, Inc. highlight his role as an influential inventor in the industry. His innovative solutions continue to pave the way for advancements