Reinforced isolated IGBT gate driver with high CMTI and Miller clamp

This post is sponsored by Texas Instruments. The ISO5851 from Texas Instruments (TI) is a 5.7kVrms, reinforced isolated gate driver for IGBTs and MOSFETs with 2.5A source and 5A sink current. The input side operates from a single 3V to 5.5V supply. The output side allows for a supply range from minimum 15V to maximum 30V. Two complementary CMOS inputs control the output state of the gate driver. The short propagation time of 76ns assures accurate control of the output stage. An internal desaturation (DESAT) fault detection recognizes when the IGBT is in an overload condition. Upon a DESAT detect the gate driver output is driven low to VEE2 potential turning the IGBT immediately off.