Description:

The UCC21520-Q1 is an isolated dual-channel gate driver with 4A peak source current and 6A peak sink current. The driver can be used to drive power MOSFETs, IGBTs and SiC MOSFETs up to 5MHz. The input side is isolated from the two output drivers by a 5.7kVRMS reinforced isolation barrier, with a minimum common-mode transient immunity (CMTI) of 125V/ns. Internal functional isolation between the two secondary-side drivers supports an operating voltage of up to 1500VDC. Each driver can be configured as two low-side drivers, two high-side drivers, or one half-bridge driver with programmable dead time (DT). The disable pin can turn off both outputs simultaneously, and allowing the device to operate normally when left open or grounded. As a fail-safe mechanism, a primary-side logic fault forces both outputs low. Each device accepts a VDD supply voltage of up to 25V. With a wide input VCCI voltage range of 3V to 18V, the driver is suitable for interfacing with analog and digital controllers. All supply voltage pins have under-voltage lockout (UVLO) protection. With all these advanced features, the UCC21520-Q1 enables high efficiency, high power density and robustness.

Features:

Qualified for automotive applications

Meets AEC-Q100 standard with the following characteristics: – Device temperature grade 1

Functional safety quality-managed – Documentation available for functional safety system design

Junction temperature range: –40°C to +150°C

Switching parameters:

– 33ns typical propagation delay

– 20ns minimum pulse width

– 6ns maximum pulse width distortion

Common-mode transient immunity (CMTI) greater than 125V/ns

Surge immunity up to 10kV

Isolation barrier life > 40 years

4A peak source and 6A peak sink output

3V to 18V input VCCI range, compatible with digital and analog controllers

VDD output drive supply up to 25V

– 5V and 8V VDD UVLO options

Programmable overlap and dead time

Fast disable for power sequencing

Safety-related certifications:

– 8000VPK reinforced isolation in accordance with DIN EN IEC 60747-17 (VDE 0884-17)

– 5.7kVRMS isolation for up to 1 minute in accordance with UL 1577

– CSA certification in accordance with IEC 60950-1, IEC 62368-1, IEC 61010-1 and IEC 60601-1 end-equipment standards

– CQC certification in accordance with GB4943.1-2022

Applications:

HEV and BEV battery chargers

Isolated converters in DC/DC and AC/DC power supplies

Uninterruptible power supplies (UPS)