1 Features

• Universal: dual low-side, dual high-side or halfbridge

driver

• Up to 4A peak source and 6A peak sink output

• 1.6KVRMS basic isolation rating.

• Common-mode transient immunity (CMTI) greater

than 125V/ns

• Switching parameters:

– 33ns typical propagation delay

– 5ns maximum pulse-width distortion

– 10μs maximum VDD power-up delay

• Up to 25V VDD output drive supply with 5V VDD

UVLO protection

• UVLO protection for all power supplies

• Fast enable for power sequencing

• 4×4mm SON package with >1.2mm spacing:

– Thermal PAD under each channel

– 14.1°C/W RƟJB

• Junction temperature range –40 to +150°C

2 Applications

• Server, telecom and industrial infrastructure

• AC-DC and DC-DC power supplies

• Uninterruptible power supply (UPS)

3 Description

The UCC21231 is an isolated dual-channel gate

driver family with programmable dead time and

wide temperature range. This device exhibits

consistent performance and robustness under

extreme temperature conditions. UCC21231 is

designed with 4A peak-source and 6A peak-sink

current to drive power MOSFET, and GaN transistors.

The UCC21231 can be configured as two low-side

drivers, two high-side drivers, 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 common-mode transient immunity (CMTI).

Protection features include: resistor programmable

dead time, enable feature to shut down both outputs

simultaneously, 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 UCC21231 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 undervoltage

lock-out (UVLO) protection.

With all these advanced features, the UCC21231

device enables high efficiency, high power density,

and robustness in a wide variety of power

applications.