Design and Investigation of an Isolated Gate Driver Using CMOS Integrated Circuit and HF Transformer for Interleaved DC/DC Converter

This paper deals with the design and the implementation of an isolated gate driver system using a CMOS integrated circuit for interleaved dc/dc converters. It is based on a novel gate driver topology for power switches like MOSFETs and insulated-gate bipolar transistors. Composed of two legs of a CMOS inverter, a high-frequency pulse transformer, and two Zener diodes connected in antiseries configuration with the gate of the power switch, this driver topology provides an optimal bipolar gate driver waveform with greater positive and negative gate biases to fasten the switch on and off. It represents a simple ultracompact isolated gate driver simple to integrate in CMOS technology. Power consumption, system size, and robustness of the gate driver are therefore optimized. This integrated driver circuit can be used for any multitransistor applications. We detail the operation principle of the proposed driver topology in this paper. We implemented the gate driver to control a three-phase interleaved boost converter; the results show the effectiveness of the proposed driver system.