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Texas Instruments UCC21750/UCC21750-Q1 Single-Channel Gate Driver

Texas Instruments UCC21750/UCC21750-Q1 Single-Channel Gate Driver is a galvanic isolated gate driver designed for SiC MOSFETs and IGBTs up to 2121V DC operating voltage with advanced protection features. It offers best-in-class dynamic performance and robustness. UCC21750/UCC21750-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 and 12.8kVPK surge immunity. It has longer than 40 years of isolation barrier life, providing low part-to-part skew and > 150V/ns common-mode noise immunity (CMTI).

The UCC21750/UCC21750-Q1 includes state-of-the-art protection features, such as fast overcurrent and short circuit detection, shunt current sensing support, and fault reporting. It also contains an active miller clamp and input and output side power supply UVLO to optimize SiC and IGBT switching behavior and robustness. The isolated analog to the PWM sensor can be utilized for easier temperature or voltage sensing, increasing the drivers’ versatility and simplifying the system design effort, size, and cost. The Texas Instruments UCC21750-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • 5.7kVRMS single-channel isolated gate driver
  • 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 a 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 over current 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/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 of -40°C to 150°C

Applications

  • Industrial motor drives
  • Server, telecom, and industrial power supplies
  • Uninterruptible power supplies (UPS)
  • Solar inverters

Datasheets

Functional Block Diagram

Block Diagram - Texas Instruments UCC21750/UCC21750-Q1 Single-Channel Gate Driver

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Published: 2020-01-08 | Updated: 2025-06-06