Hao-Che Ma

Title: Hao-Che Ma and Multiphase Motor Control Innovation.

Introduction

Hao-Che Ma is an inventor based in Taipei, Taiwan, associated with Richtek Technology Corporation. His patent work addresses motor control, particularly the management of electrical energy during braking.

Latest Patents

The provided information identifies one patent associated with Ma: “Multiphase Motor Driving Circuit and Multiphase Motor Driving Method.” The invention describes a power-stage circuit and a control circuit that operate in two braking sub-modes. When the holding voltage falls below a first threshold, pulse-width modulation (PWM) switches part of the power stage to convert the motor’s back electromotive force into voltage that powers the control circuit. When the holding voltage exceeds a second threshold, PWM control keeps part of the switches continuously conductive, consuming the back EMF and reducing motor speed. Ma is credited with 1 patent.

Career Highlights

Ma’s listed work connects him with Richtek Technology Corporation and focuses on multiphase motor-driving circuitry. The patent’s two-mode braking approach is designed to support the control circuit at low holding voltage and dissipate motor-generated energy at higher voltage.

Collaborations

The provided information lists I-Chi Lin and Yuan-Hsun Chang as Ma’s coworkers. It does not specify their roles in the patent or describe particular collaborations.

Conclusion

Hao-Che Ma’s identified patent presents a two-mode method for managing back EMF during multiphase motor braking, reflecting his work in motor-driving technology at Richtek Technology Corporation.