Roel Van Ettinger

Title: Roel Van Ettinger: Innovator in LED Technology

Introduction

Roel Van Ettinger is a notable inventor based in Bathgate, GB. He has made significant contributions to the field of LED technology, holding a total of 3 patents. His innovative approaches have led to advancements in power supply efficiency and LED driver design.

Latest Patents

One of Roel's latest patents is titled "Driving multiple parallel LEDs with reduced power supply ripple." This invention discloses an LED driver that operates LEDs connected in parallel. Instead of applying current to all parallel-connected LEDs simultaneously, the current application is staggered using staggered brightness control signals. This method reduces ripple in the power supply by minimizing the magnitude of the instantaneous current sink. The design incorporates a shift register that contains a binary representation of the PWM duty cycle, allowing for controlled staggering of the brightness control signals.

Another significant patent is "Creating additional phase margin in the open loop gain of a negative feedback amplifier system using a boost zero compensating resistor." This invention involves a low-dropout voltage (LDO) regulator that creates a zero in the open loop gain. It utilizes a small-sized current control element to divert part of the supplied load current through a 'zero' resistor before adding it to the output load. The control signal generated by an error amplifier is used to manage the current control elements, enhancing the overall feedback signal.

Career Highlights

Roel Van Ettinger is currently employed at Micrel, Incorporated, where he continues to innovate in the field of electronics. His work focuses on improving the efficiency and performance of LED drivers and power supply systems.

Collaborations

Throughout his career, Roel has collaborated with notable colleagues, including Christian Gater and Paul Wilson. These partnerships have contributed to the development of advanced technologies in their respective fields.

Conclusion

Roel Van Ettinger's contributions to LED technology and power supply efficiency demonstrate his commitment to innovation. His patents reflect a deep understanding of electronic systems and a drive to improve their functionality.