Company Filing History:

8 out of 1,302

Fairchild Semiconductor Corporation

patents

6 out of 306

System General Corporation

patents

2 out of 3,595

Semiconductor Components Industries, LLC

patents

4. 1 out of 29

Halo Microelectronics International

patents

Years Active: 2013-2023

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17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11689113 - Control circuit of flyback circuit (2023-06-27),

2. 11005377 - Control circuit and method therefor (2021-05-11),

3. 10897206 - Power supply with near valley switching in near valley window time period (2021-01-19),

4. 10560027 - Semiconductor device and method therefor (2020-02-11),

5. 10396571 - Adaptive overvoltage protection for adaptive power adapters (2019-08-27),

6. 10256735 - Power supply with near valley switching (2019-04-09),

7. 10236779 - Semiconductor device and method therefor (2019-03-19),

8. 10177667 - Alternating valley switching for power converter (2019-01-08),

9. 10038385 - Flyback converter and controller using counter and current emulator (2018-07-31),

10. 10027165 - Power supply circuit with secondary side to primary side communication (2018-07-17),

11. 9929657 - Alternating valley switching for power converter (2018-03-27),

12. 9344002 - Adaptive sampling circuit for detecting the demagnetized voltage of the transformer (2016-05-17),

13. 9252676 - Adaptive active clamp of flyback power converter with high efficiency for heavy load and light load (2016-02-02),

14. 9093918 - Control circuit for offline power converter without input capacitor (2015-07-28),

15. 8664998 - Adaptive filter circuit for sampling a reflected voltage of transformer in a power converter and method thereof (2014-03-04),

Title: **Innovator Spotlight: Chih-Hsien Hsieh**

Introduction

Chih-Hsien Hsieh is a prominent inventor based in Changhua County, Taiwan, recognized for his significant contributions to power supply technology. With a total of 17 patents to his name, Hsieh has made substantial advancements in control circuits, particularly in the area of flyback circuits.

Latest Patents

Hsieh's latest innovations include two notable patents pertaining to control circuits of flyback circuits. The first patent outlines a control circuit designed to manage a flyback circuit that consists of a primary-side switch, a secondary-side rectifier, and a transformer. In this technology, a feedback control circuit generates a secondary-side control signal based on current ripple signals and direct-current components of output voltage and current. This control signal effectively manages the turn-off of the secondary-side rectifier.

His second patent proposes a comprehensive power supply controller or semiconductor device with a feedback circuit capable of forming a sense signal from an auxiliary winding of a transformer. This innovative controller allows for dynamic detection and regulates the power switch by forming feedback signals in response to changes in the sense signal.

Career Highlights

Chih-Hsien Hsieh has held pivotal roles in leading technology companies, including Fairchild Semiconductor Corporation and System General Corporation. His work in these organizations significantly advanced the field of power electronics, establishing him as a key figure among contemporary inventors.

Collaborations

Throughout his career, Hsieh has worked alongside talented individuals such as Jung-Sheng Chen and Zhibo Tao. Their collaboration has undoubtedly contributed to the refinement and success of Hsieh's innovative concepts.

Conclusion

Chih-Hsien Hsieh exemplifies the spirit of innovation. With his robust portfolio of patents and significant contributions to the technological landscape, he continues to inspire future generations of inventors and engineers. His work not only addresses current technological challenges but also paves the way for future advancements in power supply technology.

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