Chia-Chi Liu

Title: Innovations of Chia-Chi Liu

Introduction

Chia-Chi Liu is a notable inventor based in Kaohsiung, Taiwan. He has made significant contributions to the field of power supply technology, holding 2 patents that focus on reducing acoustic noise and improving load transient response in power supply circuits.

Latest Patents

One of his latest patents is titled "Power supply controller having reduced acoustic noise and method of reducing acoustic noise." This invention is designed to operate within a power supply circuit, effectively minimizing acoustic noise. The power supply control circuit generates a control signal based on a voltage identification (VID) signal and a voltage sense signal, which operates a power switch in a power stage circuit. This process converts an input voltage to an output voltage while incorporating a conversion circuit and a PWM control circuit. The conversion circuit features a DAC and a slope control circuit that adjusts the descending slope of an analog voltage identification signal to restrain the decrease velocity of the output voltage.

Another significant patent is "Switching regulator and control circuit thereof and quick response method." This invention includes a switching regulator with load transient quick response capabilities. It consists of at least one power stage circuit and a control circuit that generates a PWM signal based on the output voltage and a quick response (QR) signal. The control circuit includes a differentiator circuit and a comparison circuit, which work together to ensure that the PWM signal generation circuit performs a QR procedure when necessary.

Career Highlights

Chia-Chi Liu is currently employed at Richtek Technology Corporation, where he continues to innovate in the field of power supply solutions. His work has been instrumental in advancing technologies that enhance the efficiency and performance of power supply circuits.

Collaborations

He collaborates with talented coworkers, including Yu-Chieh Lin and Yen-Hsun Wang, who contribute to the innovative environment at Richtek Technology Corporation.

Conclusion

Chia-Chi Liu's contributions to power supply technology through his patents demonstrate his commitment to innovation and excellence in engineering. His work not only addresses current challenges in the field but also paves the way for future advancements.