High-speed dual-channel isolated gate driver with programmable dead time

The Texas Instruments UCC21231 is an isolated dual-channel gate driver family with programmable dead time and a wide temperature range. This device displays consistent performance and robustness under extreme temperature conditions. It is designed with 4A peak-source and 6A peak-sink current to drive power MOSFETs and GaN transistors.

The device can be configured as two low-side, two high-side, or a half-bridge driver. The input side is isolated from the two output drivers by a 1.6kVRMS isolation barrier, with a minimum of 125V/ns CMTI.

Protection features include a a resistor-programmable dead time, an enable feature to shut down both outputs simultaneously, an integrated de-glitch filter that rejects input transients shorter than 5ns, and negative voltage handling for up to –2V spikes for 200ns on input and output pins. All supplies have UVLO protection.

The device accepts VDD supply voltages up to 25V. An input VCCI range from 3V to 5.5V makes the driver suitable for interfacing with digital controllers. All supply voltage pins have UVLO protection.

With all these advanced features, the device allows high efficiency, high power density, and robustness in various power applications.