Toshiba Starts Sample Shipments of Pre-Driver IC for Automotive Brushless Motors Supporting Functional Safety

September 28, 2021

Toshiba Electronic Devices & Storage Corporation

TOKYO—Toshiba Electronic Devices & Storage Corporation ("Toshiba") has begun shipping test samples of "TB9083FTG," a pre-driver IC for automotive applications that include brushless motors for electric power steering systems and electric brakes.
Toshiba will ship final samples in January 2022, and will start mass production in December 2022.

TB9083FTG is a three-phase pre-driver that controls and drives external N-channel power MOSFETs for driving a three-phase brushless DC motor. It supports ASIL-D[1] functional safety[2] and its compliance with ISO 26262 2nd edition allows use in for highly safety-critical automotive systems.

The new IC has a built-in three-channel pre-driver for the safety relays that control and drive the relays for motors and power supply. This eliminates the need for external components and helps reduce the part count.

TB9083FTG is housed in a small P-VQFN48-0707-0.50-005 package (7.0mm x 7.0mm (typ.)) with a wettable flank[3] structure. As the need for redundant design imposes restrictions on electronic control unit board area, adoption of this small packages helps to reduce the total mounting area.

Automotive equipment

  • Electric power steering, electric braking, various types of pump, etc.
  • Supports functional safety
    • Developed in compliant with ISO 26262 2nd edition
    • Safety manual and safety analysis reports
    • Built-in functional redundancy, ABIST[4], and LBIST[5]
    • SPI[6] interface with CRC[7] checking
  • Three-phase pre-driver
    Control and drive of three-phase power MOSFET (Nch x 6pcs) are available
    Chopping PWM frequency can be set up to 20kHz
  • Built-in three channels pre-driver for safety relay
    It can control / drive three relays for each phase of motor. Otherwise, one channel controls / drives three relays for motor collectively and another two channel control / drive relays for power supply.
  • Built-in amplifier for motor current detection
    For voltage amplification generated in 3-phase shunt resistor
    6 types of gain setup are possible.
  • Small package
    Small surface mount wettable flank structure P-VQFN48-0707-0.50-005 package with E-pad[8]

Follow the link below for more on Toshiba’s automotive brushless motor driver ICs including pre-driver ICs.

Automotive Brushless Motor Driver ICs

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