William M Andreycak

Title: Innovations of William M Andreycak

Introduction

William M Andreycak is a notable inventor based in Bedford, NH (US). He has made significant contributions to the field of power conversion technology, holding a total of 3 patents. His work focuses on enhancing the efficiency and functionality of power converters, which are essential in various electronic applications.

Latest Patents

One of his latest patents is a highly efficient isolated AC/DC power conversion technique. This invention features an AC-to-DC power converter capable of generating a regulated, isolated DC voltage output from a power factor corrected AC voltage input with improved efficiency. The design includes a two-stage power converter, with a power factor correction (PFC) stage connected in series to a power conversion stage. The PFC stage utilizes a zero current switching technique, while the power conversion stage incorporates a zero voltage switched half-bridge converter. A transformer is included to provide the isolated DC voltage output, and a single feedback control loop is employed to regulate the DC voltage output effectively.

Another significant patent is for a unique power supply architecture with cascaded converters designed for a large input-to-output step-down ratio. This power supply features a transformer-coupled power converter that operates in a free-running mode at nearly 100% maximum duty cycle to convert an input voltage to an intermediate voltage. The buck power converter then produces a regulated output voltage from this intermediate voltage. Additionally, the power supply includes a pulse width modulation (PWM) controller that employs leading-edge modulation of complementary control signals to manage the buck switches in the buck converter. The PWM controller is synchronized with primary-side free-running switches of the transformer-coupled power converter, enhancing the overall efficiency of the system.

Career Highlights

William M Andreycak is currently employed at Texas Instruments Corporation, where he continues to innovate in the field of power electronics. His work has had a significant impact on the efficiency and reliability of power conversion systems.

Collaborations

Throughout his career, he has collaborated with notable colleagues such as Robert Monroe and Chuck Payne. These collaborations have contributed to the advancement of technology in power conversion.

Conclusion

William M Andreycak's contributions to power conversion technology through his innovative patents demonstrate his expertise and commitment to enhancing electronic systems. His work continues to influence the industry and pave the way for future advancements.