Company Filing History:
Years Active: 2020-2021
Title: Yichao He: Innovator in Current Regulation Circuits
Introduction
Yichao He is a prominent inventor based in Hangzhou, China. He has made significant contributions to the field of electrical engineering, particularly in the development of current regulation circuits. With a total of 3 patents, his work showcases innovative solutions that enhance the performance and efficiency of electronic devices.
Latest Patents
Yichao He's latest patents include two notable inventions. The first is a "Current self-checking regulation circuit based on voltage calibration." This invention provides a current self-checking regulation circuit that includes a bandgap reference unit, a self-calibration unit, a detection and regulation unit, current mirror units, and a current mirror control unit. The bandgap reference unit generates a voltage signal, while the self-calibration unit responds to a digital signal from the detection and regulation unit to calibrate the voltage signal of the bandgap reference unit. The detection and regulation unit samples the reference current signal and generates a digital control signal according to the reference current signal, allowing the regulation group current mirror unit to output a regulated bias current signal suitable for laser drivers.
The second patent is a "Multi-bit digitally controlled accurate current source circuit." This invention includes a reference current detection unit, a voltage buffer unit, a digital logic control unit, a switch array unit, and a current source array unit. The reference current detection unit generates a first bias voltage based on a reference current, which is then processed by the voltage buffer unit to create a buffer voltage. The digital logic control unit generates a digital control signal based on the buffer voltage, which is used by the switch array unit to control the on-off signals for the current sources in the current source array unit. This design incorporates a voltage buffer to form a cascode current source, resulting in an area-saving and accurate current source.
Career Highlights
Yichao He is currently employed at Ampliphy Technologies Limited, where he continues to innovate and develop advanced electronic solutions. His work has significantly impacted the field of current regulation, making him a valuable asset to his company and the industry.
Collaborations
Yichao He has collaborated with notable colleagues, including Qingping Li and Chih-yang Wang. Their combined expertise contributes to the advancement of technology in their respective fields.
Conclusion
Yichao He is a distinguished inventor