An Integrated Adaptive Miller Clamp Circuit Applied to the SiC MOSFET Bridge Circuit
Year: 2026
Type: conference-paper
Abstract: Based on the active Miller clamp technology with voltage threshold detection, a Miller clamp circuit for adaptively adjusting the conduction speed of the clamp MOSFET was designed. By detecting the rate of change of the gate voltage VGSof the SiC MOSFET during turn-off, the charging current of the parasitic gate-source capacitance of the clamp transistor was adjusted to achieve adaptive adjustment of the conduction speed of the clamp transistor. This design was implemented using the 0.18 μm BCD process and was designed and verified through simulation in Virtuoso. The simulation results show that when dVGS/dt increases, the conduction speed of the clamp transistor accelerates, and the anti-interference ability reaches 160V/ns.
Authors: Weijia Zhao, Jianlin Fan, Xingfu Wang, Dawei Liu
Institutions: South China Normal University, Guangdong Academy of Sciences
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7165531059