Michael Chapman

Title: Michael Chapman: Innovator in GaN Technology

Introduction

Michael Chapman is a prominent inventor based in Long Beach, California. He has made significant contributions to the field of power electronics, particularly in Gallium Nitride (GaN) technology. With a total of 11 patents to his name, Chapman has established himself as a key figure in the development of innovative solutions for integrated circuits.

Latest Patents

One of his latest patents is the Integrated GaN-based logic level translator. This invention provides a single-ended or differential level-shifting interface for GaN integrated circuits, allowing them to be controlled with standard low-voltage CMOS level inputs. The logic level shift circuit is based on a resistive network, making it insensitive to process and temperature variations, which is particularly advantageous for implementation in GaN ICs. The design includes a voltage divider connected to the input signal, providing a level-shifted and scaled input signal to a comparator. Additionally, it features a second voltage divider branch with hysteresis for providing a trip voltage to the comparator, ensuring optimal performance.

Another notable patent is the Universal power FET driver IC architecture. This invention integrates a synchronous bootstrap circuit within an isolation well of an integrated circuit. The design allows the synchronous bootstrap capacitor to float with the corresponding switch node of a power converter. This innovative feature enables the voltage on one synchronous bootstrapping capacitor to charge another capacitor in a separate isolation well, streamlining the supply voltages for multiple synchronous bootstrap circuits.

Career Highlights

Michael Chapman is currently employed at Efficient Power Conversion Corporation, where he continues to push the boundaries of power electronics. His work has been instrumental in advancing GaN technology, which is crucial for improving the efficiency and performance of power converters.

Collaborations

Throughout his career, Chapman has collaborated with talented individuals such as Edward Lee and Ravi Ananth. These partnerships have fostered a creative environment that has led to groundbreaking innovations in the field.

Conclusion

Michael Chapman is a distinguished inventor whose contributions to GaN technology have had a profound impact on the power electronics industry. His innovative patents and collaborative efforts continue to drive advancements in this critical field.