The UCC21225A is an isolated dual-channel gate driver with 4-A source and 6-A sink peak
current in a space-saving 5 mm x 5 mm LGA-13 package. It is designed to drive power MOSFETs, IGBTs,
and SiC MOSFETs up to 5-MHz with best-in-class propagation delay and pulse-width distortion, in
applications requiring the highest power density.
The input side is isolated from the two output drivers by a
2.5-kVRMS reinforced isolation barrier, with a minimum of 100-V/ns
common-mode transient immunity (CMTI). Internal functional isolation between the two secondary-side
drivers allows a working voltage of up to 700-VDC.
This driver can be configured as two low-side drivers, two high-side drivers, or a
half-bridge driver with programmable dead time (DT). A disable pin shuts down both outputs
simultaneously when it is set high, and allows normal operation when left open or grounded. As a
fail-safe measure, primary-side logic failures force both outputs low.
The device accepts VDD supply voltages up to 25-V. A wide input VCCI range from 3-V to
18-V makes the driver suitable for interfacing with both analog and digital controllers. All the
supply voltage pins have under voltage lock-out (UVLO) protection.
With all these advanced features, the UCC21225A enables high power density, high
efficiency, and robustness in a wide variety of power applications.
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