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3-Phase BLDC Motor Pre-driver IC for EPS Applications: TB9081FG

This figure shows a inside of TB9081FG 3-phase BLDC Motor Pre-driver for EPS application.

3-phase motor pre-driver IC that newly designed for high-current applications such as electric powerassisted steering (EPS)

  • 3-phase pre-driver (that requires external FETs)
  • High-side and low-side charge pumps
  • High-speed pre-driver
  • 5-channel safety relays
  • High-speed motor current sense circuit
  • Various detection circuits
    Undervoltage detection for each power supply, thermal
    shutdown, external FET short-circuit detection
    Initial diagnosis of the detection circuits
  • The operation of pre-drivers in the event of a fault is
    pre-configurable via SPI communication
  • Supply voltage: 40 V peak (load dump)
  • Operating voltage range: 4.5 to 18 V
  • PWM operating frequency: 20 kHz
  • Operating temperature range: Ta = –40 to 125°C
  • Package: LQFP64

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