Stephen D Edwards

Title: Stephen D Edwards: Innovator in Low Power Circuit Designs

Introduction

Stephen D Edwards, a prominent inventor based in San Jose, California, has made significant contributions to the field of electrical engineering. With a remarkable portfolio that includes seven patents, his work focuses on low-power circuit designs, particularly beneficial for modern semiconductor applications.

Latest Patents

Among his latest innovations is the patent for a "Low side current sink circuit having improved output impedance to reduce effects of leakage current." This invention presents a low voltage current sink circuit utilizing an NPN transistor. The design incorporates an emitter degeneration resistor to enhance output impedance, thereby minimizing leakage currents and improving performance in low power applications. The circuit is especially advantageous in clock generator applications, where reducing clock jitter is crucial.

Another significant patent is the "Differential charge pump for providing a low charge pump current." This innovation allows for small magnitude currents to accurately feed on-chip components, such as filters associated with phase lock loop (PLL) circuitry. It employs an R-2R resistor ladder circuit to efficiently generate precise, low magnitude currents that align with the operational requirements of smaller filter components. This capability is essential for integrating these components seamlessly on semiconductor chips.

Career Highlights

Stephen has made substantial contributions while working with industry leaders like Sony Corporation of Japan. His work has significantly advanced the state of low-power circuit designs and reflects his dedication to innovative engineering solutions.

Collaborations

Throughout his career, Stephen has collaborated with talented engineers and colleagues, including Mehrdad Nayebi and Phil Shapiro. Their joint efforts have played a key role in pushing the boundaries of technology in their respective fields.

Conclusion

In summary, Stephen D Edwards stands out as an influential inventor whose work in low-power circuit designs has far-reaching implications for modern technology. His patents not only enhance circuit efficiency but also address critical challenges in the industry, paving the way for further innovations in semiconductor design.