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Texas Instruments DRV3245Q-Q1 Gate Driver Unit (GDU)

Texas Instruments DRV3245Q-Q1 Gate Driver Unit (GDU) is a FET gate driver IC for three-phase motor-drive applications designed according to the applicable requirements of ISO 26262 for functional safety applications. The device provides three half-bridge drivers each capable of driving a high-side and low-side N-channel MOSFET while also providing sophisticated protection and monitoring of the FETs. A charge-pump driver enables 100% duty cycle and supports low battery voltages during cold-crank operation. The integration of current-sense amplifiers, integrated phase comparators, and SPI-based configuration of the driver and its peripherals enable reduction of the bill of materials (BOM) and space on the printed circuit board (PCB) because of the elimination of most external and passive components.

Features

  • AEC-Q100 qualified for automotive applications
    • Device Temperature Grade 1 (–40°C to +125°C, TA)
  • SafeTI™ semiconductor component
    • Developed according to the applicable requirements of ISO 26262
  • 4.5V to 45V operating voltage
  • Programmable peak gate drive currents up to 1A
  • Charge-pump gate driver for 100% duty cycle
  • Current-shunt amplifiers and phase comparators
    • A Device: 3 current-shunt amplifiers and 3-phase comparators with status through SPI
    • B Device: 2 current-shunt amplifiers and 3-phase comparators with a real-time monitor through digital pins
  • 3-PWM or 6-PWM input control up to 20kHz
  • Single PWM-mode commutation capability
  • Supports both 3.3V and 5V digital interface
  • Serial Peripheral Interface (SPI)
  • Thermally-enhanced 48-pin HTQFP
  • Protection features
    • Internal regulators, battery voltage monitor
    • SPI CRC
    • Clock monitor
    • Analog built-in self-test
    • Programmable dead-time control
    • MOSFET shoot-through prevention
    • MOSFET VDS overcurrent monitors
    • Gate-source voltage real-time monitor
    • Overtemperature warning and shutdown

Applications

  • 12V automotive motor-control applications
  • Electrical Power Steering (EPS, EHPS)
  • Electrical brake and brake assist
  • Transmissions and pumps

Simplified Schematic

Schematic - Texas Instruments DRV3245Q-Q1 Gate Driver Unit (GDU)

Related Development Tool

Texas Instruments BOOSTXL-DRV3245AQ1 Evaluation Module

A platform for evaluating the performance of the DRV3245AQPHPRQ1 motor gate driver.

Learn Moreabout Texas Instruments BOOSTXL-DRV3245AQ1 Evaluation Module View Productsrelated to Texas Instruments BOOSTXL-DRV3245AQ1 Evaluation Module
Published: 2018-06-06 | Updated: 2025-05-21