DRV3245E-Q1 3-Phase Automotive Gate Driver Unit (G

By Texas Instruments 70

DRV3245E-Q1 3-Phase Automotive Gate Driver Unit (G

Texas Instruments' DRV3245E-Q1 device is a FET gate driver IC for 3-phase motor-drive applications. The device is intended for high-temperature automotive applications and is 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 amps, integrated phase comparators, and SPI-based configuration enable reduction of the bill of materials (BOM) and space on the printed circuit board (PCB) due to the elimination of external and passive components.

The DRV3245E-Q1 device integrates diagnostics and protection for each internal block and provides support for common system diagnostic checks which can be instantiated and reported through the SPI. This flexibility of the integrated features allows the device to integrate seamlessly into a variety of safety architectures.

Features
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 0: -40°C to +150°C, TA
  • SafeTI™ semiconductor component:
    • Developed according to the applicable requirements of ISO 26262
  • Operating voltage range: 4.5 V to 45 V
  • Programmable peak gate drive currents: up to 1 A
  • Charge-pump gate driver for 100% duty cycle
  • Current-shunt amps and phase comparators:
    • A device: three current-shunt amps and 3-phase comparators with status through SPI
    • B device: two current-shunt amps and 3-phase comparators with real-time monitor through digital pins
  • 3 PWM or 6 PWM input control: up to 20 kHz
  • Single PWM-mode commutation capability
  • Supports 3.3 V and 5 V digital interface
  • Serial peripheral interface (SPI)
  • Thermally-enhanced 48-pin HTQFP
  • Protection:
    • 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
Applications
  • High-temperature 12 V automotive applications:
    • Automated manual transmission and dual-clutch transmission
    • Shift by wire
    • Transfer cases and pumps

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