1 Features

• 5.7-kVRMS single channel isolated gate driver

• AEC-Q100 Qualified with the following results:

– Device temperature grade 1: -40°C to +125°C

ambient operating temperature range

– Device HBM ESD classification level 3A

– Device CDM ESD classification level C6

• Functional Safety Quality-Managed

– Documentation available to aid functional safety

system design

• SiC MOSFETs and IGBTs up to 2121 Vpk

• 33-V maximum output drive voltage (VDD-VEE)

• ±10-A drive strength and split output

• 150-V/ns minimum CMTI

• 270-ns response time fast overcurrent protection

• External active Miller clamp

• 900-mA soft turn-off when fault happens

• ASC input on isolated side to turn on power switch

during system fault

• Alarm FLT on overcurrent and reset from RST/EN

• Fast enable/disable response on RST/EN

• Rejects <40-ns noise transient and pulse on input

pins

• 12-V VDD UVLO with power good on RDY

• Inputs/outputs with over/under-shoot transient

voltage immunity up to 5 V

• 130-ns (maximum) propagation delay and 30-ns

(maximum) pulse/part skew

• SOIC-16 DW package with creepage and

clearance distance > 8 mm

• Operating junction temperature –40°C to 150°C.

2 Applications

• Traction inverter for EVs

• On-board charger and charging pile

• DC-to-DC converter for HEV/EVs

3 Description

The UCC21738-Q1 is a galvanic isolated single

channel gate driver designed for SiC MOSFETs

and IGBTs up to 2121-V DC operating voltage with

advanced protection features, best-in-class dynamic

performance and robustness. The device has up to

±10-A peak source and sink currents.

The input side is isolated from the output side with

SiO2 capacitive isolation technology, supporting up to

1.5-kVRMS working voltage, 12.8-kVPK surge immunity

with longer than 40 years isolation barrier life, as

well as providing low part-to-part skew, and >150-V/ns

common-mode transient immunity (CMTI).

The UCC21738-Q1 includes the state-of-art protection

features, such as fast overcurrent and short circuit

detection, shunt current sensing support, fault

reporting, active Miller clamp, input and output side

power supply UVLO to optimize SiC and IGBT

switching behavior and robustness. The ASC feature

can be utilized to force ON power switch during

system failure events, further increasing the drivers'

versatility and simplifying the system design effort,

size, and cost.