Product
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UCC21751-Q1
  • UCC21751-Q1
  • UCC21751-Q1

UCC21751-Q1

ACTIVE

Automotive 5.7kVrms, +-10A single-channel isolated gate driver w/DESAT & Internal clamp for IGBT/SiC

Texas Instruments UCC21751-Q1 Product Info

1 April 2026 0

Parameters

Number of channels

1

Isolation rating

Reinforced

Power switch

IGBT, SiCFET

Withstand isolation voltage (VISO) (Vrms)

5700

Working isolation voltage (VIOWM) (Vrms)

1500

Transient isolation voltage (VIOTM) (VPK)

8000, 8400

Peak output current (A)

10

Peak output current (source) (typ) (A)

10

Peak output current (sink) (typ) (A)

10

Features

Active miller clamp, Desaturation (DESAT) protection, Fault reporting, Integrated analog to PWM sensor, Power good, Short circuit protection, Soft turn-off

Output VCC/VDD (min) (V)

13

Output VCC/VDD (max) (V)

33

Input supply voltage (min) (V)

3

Input supply voltage (max) (V)

5.5

Propagation delay time (µs)

0.09

Input threshold

CMOS

Operating temperature range (°C)

-40 to 125

Rating

Automotive

Bootstrap supply voltage (max) (V)

2121

Rise time (ns)

33

Fall time (ns)

27

Undervoltage lockout (typ) (V)

12

TI functional safety category

Functional Safety-Capable

Package

SOIC (DW)-16-106.09 mm² 10.3 x 10.3

Features

  • 5.7kVRMS single channel isolated gate driver
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: -40°C to +125°C ambient operating temperature range
  • SiC MOSFETs and IGBTs up to 2121Vpk
  • 33V maximum output drive voltage (VDD – VEE)
  • ±10A drive strength and split output
  • 150V/ns minimum CMTI
  • 200ns response time fast DESAT protection
  • 4A internal active miller clamp
  • 400mA soft turn-off when fault happens
  • Isolated analog sensor with PWM output for
    • Temperature sensing with NTC, PTC or thermal diode
    • High voltage DC-link or phase voltage
  • Alarm FLT on overcurrent and reset from RST/EN
  • Fast enable and disable response on RST/EN
  • Reject < 40ns noise transient and pulse on input pins
  • 12V VDD UVLO with power good on RDY
  • Inputs/outputs with over/under-shoot transient voltage immunity up to 5V
  • 130ns (maximum) propagation delay and 30ns (maximum) pulse/part skew
  • SOIC-16 DW package with creepage and clearance distance > 8mm
  • Operating junction temperature –40°C to 150°C
  • Safety-related certifications:
    • UL 1577 component recognition program (Certification Planned)
  • 5.7kVRMS single channel isolated gate driver
  • AEC-Q100 qualified for automotive applications
    • Device temperature grade 1: -40°C to +125°C ambient operating temperature range
  • SiC MOSFETs and IGBTs up to 2121Vpk
  • 33V maximum output drive voltage (VDD – VEE)
  • ±10A drive strength and split output
  • 150V/ns minimum CMTI
  • 200ns response time fast DESAT protection
  • 4A internal active miller clamp
  • 400mA soft turn-off when fault happens
  • Isolated analog sensor with PWM output for
    • Temperature sensing with NTC, PTC or thermal diode
    • High voltage DC-link or phase voltage
  • Alarm FLT on overcurrent and reset from RST/EN
  • Fast enable and disable response on RST/EN
  • Reject < 40ns noise transient and pulse on input pins
  • 12V VDD UVLO with power good on RDY
  • Inputs/outputs with over/under-shoot transient voltage immunity up to 5V
  • 130ns (maximum) propagation delay and 30ns (maximum) pulse/part skew
  • SOIC-16 DW package with creepage and clearance distance > 8mm
  • Operating junction temperature –40°C to 150°C
  • Safety-related certifications:
    • UL 1577 component recognition program (Certification Planned)

Description

The UCC21751-Q1 is a galvanic isolated single channel gate driver designed for SiC MOSFETs and IGBTs up to 2121V DC operating voltage with advanced protection features, best-in-class dynamic performance and robustness. The UCC21751-Q1 has up to ±10A peak source and sink current.

The input side is isolated from the output side with SiO2 capacitive isolation technology, supporting up to 1.5kVRMS working voltage, 12.8kVPK surge immunity with longer than 40 years Isolation barrier life, as well as providing low part-to-part skew, and > 150V/ns common mode noise immunity (CMTI).

The UCC21751-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, and input and output side power supply UVLO to optimize SiC and IGBT switching behavior and robustness. The isolated analog to PWM sensor can be used for easier temperature or voltage sensing, further increasing the drivers’ versatility and simplifying the system design effort, size, and cost.

The UCC21751-Q1 is a galvanic isolated single channel gate driver designed for SiC MOSFETs and IGBTs up to 2121V DC operating voltage with advanced protection features, best-in-class dynamic performance and robustness. The UCC21751-Q1 has up to ±10A peak source and sink current.

The input side is isolated from the output side with SiO2 capacitive isolation technology, supporting up to 1.5kVRMS working voltage, 12.8kVPK surge immunity with longer than 40 years Isolation barrier life, as well as providing low part-to-part skew, and > 150V/ns common mode noise immunity (CMTI).

The UCC21751-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, and input and output side power supply UVLO to optimize SiC and IGBT switching behavior and robustness. The isolated analog to PWM sensor can be used for easier temperature or voltage sensing, further increasing the drivers’ versatility and simplifying the system design effort, size, and cost.

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