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Texas Instruments UCC21736-Q1 Single-Channel Gate Driver

Texas Instruments UCC21736-Q1 Single-Channel Gate Driver is a galvanic isolated single-channel gate driver designed for SiC MOSFETs and IGBTs up to 2121VDC operating voltage. The device comes with advanced protection features, best-in-class dynamic performance, and robustness. Texas Instruments UCC21736-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 UCC21736-Q1 includes state-of-art protection features, such as fast overcurrent and short circuit detection, shunt current sensing support, and fault reporting. It also comes with an 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.

Features

  • 5.7kVRMS single-channel isolated gate driver
  • AEC-Q100 qualified for automotive applications
  • SiC MOSFETs and IGBTs up to 2121Vpk
  • 33V maximum output drive voltage (VDD-VEE)
  • ±10A drive strength and split output
  • 150V/ns minimum CMTI
  • 270ns response time fast overcurrent protection
  • External active miller clamp
  • 900mA soft turn-off when a fault happens
  • ASC input on the isolated side to turn on power switch during system fault
  • 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 and -3V VEE 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

Applications

  • Traction inverter for EVs
  • Onboard charger and charging pile
  • DC-to-DC converter for HEV/EVs

Functional Block Diagram

Block Diagram - Texas Instruments UCC21736-Q1 Single-Channel Gate Driver

Texas Instruments UCC21736-Q1 Single-Channel Gate Driver