Patent ID: 8054110
Filing Date: 2011-11-08
Classification: H03K

Abstract:
1. A driver circuit for driving a III-Nitride HFET device, comprising: a resonant drive circuit coupled to the III-Nitride HFET device, said resonant drive circuit comprising an LC circuit having an inductance and a capacitance, the capacitance of said LC circuit comprising the gate-source capacitance of the III-Nitride HFET device; a level shifter circuit configured to receive a first signal and to amplify the first signal to a second signal, the polarity of the second signal being different from the first signal; wherein said resonant drive circuit is controlled based at least in part on the second signal such that said resonant drive circuit provides a first voltage to the III-Nitride HFET device to control the III-Nitride HFET device to operate in a conducting state and to provide a second voltage to the III-Nitride HFET device to control the III-Nitride HFET device to operate in a non-conducting state; wherein said level shifter circuit comprises a first stage and a second stage, said first stage configured to receive the first signal and to convert the first signal to a third signal, the third signal alternating between a peak voltage of the first signal and the second voltage, said second stage configured to receive the third signal and to convert the third signal to the second signal, the second signal alternating between the first voltage and the second voltage.