Patent attributes
An adaptive load optimization method for a resonant gate drive circuit is provided to optimize the switching loss, turn-on loss and gate drive loss under different MOSFET loads. A data table is pre-stored in a digital signal processor chip (DSP), and voltages and pre-charge times, corresponding to a low total loss, of the resonant gate driver obtained by actual tests in case of different load currents are recorded in the data table; and in actual application, after an analog-to-digital converter terminal (ADC) samples a load current, a load current, closest to the sampled load current, is read from the data table, and the digital signal processor chip (DSP) is enabled to perform table look-up to obtain an optimized voltage and pre-charge time of a gate drive circuit.
