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UCC21755-Q1
  • UCC21755-Q1
  • UCC21755-Q1

UCC21755-Q1

ACTIVE

Automotive ±10-A isolated single-channel gate driver with active protection, and isolated sensing

Texas Instruments UCC21755-Q1 Product Info

1 April 2026 1

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

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, Disable, Enable, Fault reporting, High CMTI, Integrated analog to PWM sensor, Power good, Soft turn-off, Split output

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 Quality-Managed

Package

SOIC (DW)-16-106.09 mm² 10.3 x 10.3

Features

  • 5.7kVRMS 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
  • Functional Safety Quality-Managed
  • 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 with 5V threshold
  • 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/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- or 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
  • 5.7kVRMS 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
  • Functional Safety Quality-Managed
  • 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 with 5V threshold
  • 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/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- or 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

Description

The UCC21755-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. UCC21755-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 UCC21755-Q1 includes the state-of-art protection features, such as fast overcurrent and short circuit detection, 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 utilized for easier temperature or voltage sensing, further increasing the drivers’ versatility and simplifying the system design effort, size, and cost.

The UCC21755-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. UCC21755-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 UCC21755-Q1 includes the state-of-art protection features, such as fast overcurrent and short circuit detection, 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 utilized for easier temperature or voltage sensing, further increasing the drivers’ versatility and simplifying the system design effort, size, and cost.

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