Moon-Ho Choi

Title: Moon-Ho Choi: Innovator in Resonant Converters and LED Drivers

Introduction

Moon-Ho Choi is a prominent inventor based in Bucheon-si, South Korea. He has made significant contributions to the field of electrical engineering, particularly in the development of resonant converters and LED drivers. With a total of five patents to his name, Choi's work has had a notable impact on the industry.

Latest Patents

One of Choi's latest patents is a resonant converter and driving method. This innovative resonant converter includes a first switch on the primary side and a second switch coupled to the first switch. It also features a first synchronous rectification switch on the secondary side, which is conducted according to the switching operation of the first switch. Additionally, a second synchronous rectification switch on the secondary side is conducted according to the switching operation of the second switch. A switch control circuit is configured to detect a waveform of one end voltage of at least one of the synchronous rectification switches, determine a below region or an above region, and control the conduction duration of the switches accordingly.

Another significant patent is an LED driver. This LED driver comprises multiple driving units and a fold circuit. The driving units are coupled to an LED string that includes several LEDs for driving purposes. The fold circuit divides the LED string into multiple segments when the input voltage falls below a threshold voltage. The segments are connected in parallel, allowing the input voltage to be supplied to each segment.

Career Highlights

Choi has worked with notable companies in the semiconductor industry, including Semiconductor Components Industries, LLC and Fairchild Korea Semiconductor Ltd. His experience in these organizations has contributed to his expertise and innovative capabilities in electrical engineering.

Collaborations

Choi has collaborated with several professionals in his field, including Won-Tae Lee and Hyeong Seok Baek. These collaborations have likely fostered an environment of innovation and creativity, leading to the development of his patents.

Conclusion

Moon-Ho Choi is a distinguished inventor whose work in resonant converters and LED drivers has advanced the field of electrical engineering. His contributions, marked by five patents, reflect his commitment to innovation and excellence in technology.