Company Filing History:
Years Active: 2024-2025
Title: Innovations by Gilbert S Z Lee
Introduction
Gilbert S Z Lee is a notable inventor based in Seongnam-si, South Korea. He has made significant contributions to the field of power supply technology, holding a total of 3 patents. His work focuses on enhancing the efficiency and safety of switching regulators.
Latest Patents
One of his latest patents is for an "Artificial dual closed-loop full-time inductor current sensing" device. This invention describes a system and method for inductor current sensing in a Switch Mode Power Supply (SMPS). The device samples an input node signal indicating a voltage level at a switch node at two different time points. An artificial ramp signal is generated and adjusted based on these sampled voltages to create an output ramp signal with a triangular waveform. This waveform has a rising slope proportional to the inductor current's rising slope and a falling slope proportional to its falling slope.
Another significant patent is for a "Switching regulator implementing negative current protection." This invention incorporates a protection circuit within a switching regulator to limit negative current to a specified threshold. The controller operates the switching regulator to sink current from the load without damaging the power switches. If the negative current reaches the threshold, the protection circuit turns off the low-side power switch and activates the high-side power switch for a maximum time period. If the negative current does not recover, both switches are turned off while the high-side switch conducts the negative current through its body diode. Once the negative current recovers, the low-side power switch can be turned on again.
Career Highlights
Gilbert S Z Lee is currently employed at Alpha and Omega Semiconductor International LP, where he continues to innovate in the field of semiconductor technology. His work has been instrumental in developing safer and more efficient power supply solutions.
Collaborations
He collaborates with Zhiye Zhang, contributing to advancements in their shared field of expertise.
Conclusion
Gilbert S Z Lee's contributions to power supply technology through his innovative patents demonstrate his commitment to enhancing the efficiency and safety of electronic devices. His work continues to impact the industry positively.