Inventor

DE ROOIJ MICHAEL A

US31 patents

⚠️ This page may combine multiple inventors who share the name “DE ROOIJ MICHAEL A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DE ROOIJ MICHAEL A

EFFICIENT POWER CONVERSION CORP

Cascaded bootstrapping GaN power switch and driver

GaN transistors with polysilicon layers used for creating additional components

GaN FET gate driver for self-oscillating converters

Wireless power receiver synchronization detection circuit

GaN transistors with polysilicon layers used for creating additional components

Bootstrap capacitor over-voltage management circuit for GaN transistor based power converters

Low voltage drop cascaded synchronous bootstrap supply circuit

Enhancement mode FET gate driver IC

Driver circuit for GaN FET solid state relay

Universal power FET driver IC architecture

Active bootstrapping drivers

GaN driver using active pre-driver with feedback

Half-bridge circuits with symmetrical layout of parallel transistors and capacitors

Low parasitic inductance structure for power switched circuits

Common gate amplifier with high isolation from output to input

Magnetic field pulse current sensing for timing-sensitive circuits

Multi-coil large area wireless power system

Large area scalable highly resonant wireless power coil

Synchronizing turn-on/turn-off times of parallel power FETs

High voltage zero QRR bootstrap supply

High efficiency voltage mode class D topology

High efficiency voltage mode class D topology

Multi-level converter with voltage divider for pre-charging flying capacitor

Low distortion RF switch

GEN ELECTRIC

Integrated capacitor shield for balun in MRI receivers

Integrated low noise amplifier and balun for MRI receivers

High performance low volume inductor and method of making same

EFFICIENT POWER CONV CORP

High voltage zero QRR bootstrap supply

Device and method for bias control of class A power RF amplifier

Method for operating a non-isolated switching converter having synchronous rectification capability suitable for power factor correction applications

DE ROOIJ MICHAEL A

Parallel connection methods for high performance transistors