A compact Drive-by-Microwave gate driver with coupler integrated in a package

A low cost and compact isolated gate driver with Drive-by-Microwave technology is developed, which consists of 2.4 GHz GaN/Si transmitter and receiver chips and the butterfly isolation coupler that integrated in a printed circuit board based package. The fabricated DBM gate driver successfully demonstrated that it drove a GaN power switching device with a very fast switching. The fabricated DBM gate driver was implemented the multi-level output function, which has the potential to realize the gate voltage profile control of a power switching device for a waveform shaping. And this function can also contribute the power consumption saving of the gate driver itself by low power output at on-state and off-state other than turn-on and turn-off.