James D Whitfield

Title: Innovations of James D Whitfield

Introduction

James D Whitfield is a notable inventor based in Gilbert, AZ (US). He holds a total of 11 patents that showcase his contributions to the field of electrostatic discharge (ESD) protection technology. His work has significantly advanced the reliability and performance of integrated circuits.

Latest Patents

One of his latest patents is focused on devices with Zener triggered ESD protection. This innovation involves electrostatic discharge protection clamps for I/O terminals of integrated circuit (IC) cores. The design incorporates a bipolar transistor with an integrated Zener diode, which is coupled between the base and collector of the transistor. This approach effectively avoids variations in clamp voltage caused by conventional deep implant geometric mask shadowing by utilizing shallow implants. The self-aligned anode and cathode of the Zener are defined by the opposed edges of a single relatively thin mask, ensuring negligible mask shadowing and consistent clamp voltage.

Another significant patent by Whitfield is the multi-voltage electrostatic discharge protection system. This ESD clamp is coupled across input-output (I/O) and common (GND) terminals of a protected semiconductor device. It features an ESD transistor (ESDT) with source-drain connections between the GND and I/O terminals. The design includes resistors and control transistors that manage the ESD trigger voltage, providing maximum protection during high-risk ESD events while ensuring normal circuit operation when energized.

Career Highlights

Throughout his career, James D Whitfield has worked with prominent companies such as Freescale Semiconductor, Inc. His experience in the semiconductor industry has allowed him to develop innovative solutions that enhance the performance and safety of electronic devices.

Collaborations

Whitfield has collaborated with talented individuals in his field, including Hongzhong Xu and Chai Ean Gill. These partnerships have contributed to the advancement of ESD protection technologies and have fostered a collaborative environment for innovation.

Conclusion

James D Whitfield's contributions to the field of electrostatic discharge protection are significant and impactful. His innovative patents and collaborations reflect his dedication to advancing technology in the semiconductor industry. His work continues to influence the design and reliability of integrated circuits.