There are several different options available to drive the gates of high-voltage power switches used in a variety of applications such as HEV/EV DC/DC converters and server PSU 400V to 48V DC/DC converters. One option is to use a transformer-coupled gate drive design using a non-isolated gate driver such as UCC27624 and a discrete transformer.

A gate drive transformer brings some benefits compared to alternatives. However, there are unique design considerations that are important to understand when implementing a gate drive transformer. This document covers the system-level benefits to transformer coupled gate drive, as well as the design considerations required to implement them.