Patent ID: 11909384
Assignee: GAN SYSTEMS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A direct drive D-mode half-bridge power module comprising a high-side switch and a low-side switch connected in series, wherein the high-side switch is a D-mode normally-on GaN transistor switch (Q1) in series with an E-mode normally-off Si MOSFET switch (M1) and the low-side switch is a D-mode normally-on GaN transistor switch (Q2), wherein gates of the D-mode normally-on GaN transistor switches Q1 and Q2 are directly driven, and the gate of E-mode normally-off Si MOSFET M1 is directly driven by a control signal, wherein M1 acts as a protection FET to hold the high-side switch in an off-state during start-up and during a fault condition.