Company Filing History:

20 out of 1,302

Fairchild Semiconductor Corporation

patents

13 out of 3,593

Semiconductor Components Industries, LLC

patents

Years Active: 2011-2021

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33 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10897206 - Power supply with near valley switching in near valley window time period (2021-01-19),

2. 10879789 - System and method for controlling voltage control loop in power converter (2020-12-29),

3. 10826385 - Power factor correction circuit with calculated duty compensation and driving method thereof (2020-11-03),

4. 10693379 - Short-circuit protection using pulse width modulation (PWM) for resonant converters (2020-06-23),

5. 10630170 - Power factor correction circuit and method (2020-04-21),

6. 10608544 - Automatic control of synchronous rectifier turn-off threshold (2020-03-31),

7. 10483855 - Power limit protection for resonant power converter (2019-11-19),

8. 10396571 - Adaptive overvoltage protection for adaptive power adapters (2019-08-27),

9. 10374516 - Non zero-voltage switching (ZVS) detection in resonant converters (2019-08-06),

10. 10333416 - System and method for controlling voltage control loop in power converter (2019-06-25),

11. 10256735 - Power supply with near valley switching (2019-04-09),

12. 10193455 - Resonant capacitor stabilizer in resonant converters (2019-01-29),

13. 10186948 - Burst mode control in resonant converters (2019-01-22),

14. 10164543 - System and method for controlling power converter with adaptive turn-on delay (2018-12-25),

15. 10110137 - Automatic control of synchronous rectifier turn-off threshold (2018-10-23),

Title: The Innovations of Hangseok Choi

Introduction

Hangseok Choi, based in Bedford, NH, is an accomplished inventor with an impressive portfolio of 33 patents. His contributions to the field of power electronics showcase innovative designs that enhance efficiency and reduce energy loss.

Latest Patents

One of his latest patents is a "Power supply with near valley switching in near valley window time period". This innovative switched-mode power supply features a quasi-resonant converter, allowing the switch element to be activated not only at the valley but also within a window range near the valley, maximizing efficiency by minimizing switching loss. Another notable patent is the "System and method for controlling voltage control loop in power converter". This circuit system includes a transient detector that generates a signal based on the feedback from the power converter's output signal, along with a gain selector and an amplifier circuit, allowing precise control over the power conversion process.

Career Highlights

Hangseok Choi has built a notable career, having worked with prestigious companies such as Fairchild Semiconductor Corporation and Semiconductor Components Industries, LLC. His experience in these organizations has contributed to his expertise and innovative approaches to power supply technology.

Collaborations

Throughout his career, Hangseok Choi has collaborated with talented professionals, including Sangcheol Moon and Jintae Kim. These partnerships have further enhanced the innovation landscape within which he operates, fostering advancements in electrical engineering.

Conclusion

With his extensive patent portfolio and collaborative efforts, Hangseok Choi continues to make significant contributions to the field of power electronics. His innovative designs not only address current challenges but also pave the way for future advancements in energy efficiency and power conversion technologies.

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