TOKYO — (BUSINESS WIRE) — September 27, 2021 — 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.

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Toshiba: a pre-driver IC "TB9083FTG" for automotive applications including brushless motors for electric power steering systems and electric brakes. (Graphic: Business Wire)

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.

Notes:
[1] ASIL (Automotive Safety Integrity Level) : The highest automotive safety level regulated in the ISO 26262 functional safety standards.
[2] Functional-safety-based standards seek to minimize risk resulting from system failures. ISO 26262 certification recognizes that a company's processes or products for electrical and electronic (E/E) systems for car applications meet the stringent criteria specified in the standard and provides third parties with an independent means of assessing the capabilities of a potential supplier.
[3] Shape of side leads of packaging.

Applications

Automotive equipment
- Electric power steering, electric braking, various types of pump, etc.

Features

- 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]

Notes:
[4] ABIST (Analog Built-In Self-Test)
[5] LBIST (Logic Built-In Self-Test)
[6] SPI (Serial Peripheral Interface)
[7] CRC (Cyclic Redundancy Check)
[8] E-pad (Exposed pads) : Metal frame on back side of package

Main Specifications

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

Customer Inquiries:
System Devices Marketing Dept. III
Automotive Marketing Group II
https://toshiba.semicon-storage.com/ap-en/contact.html

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About Toshiba Electronic Devices & Storage Corporation

Toshiba Electronic Devices & Storage Corporation, a leading supplier of advanced semiconductor and storage solutions, draws on over half a century of experience and innovation to offer customers and business partners outstanding discrete semiconductors, system LSIs and HDD products.
The company's 22,000 employees around the world share a determination to maximize product value, and promote close collaboration with customers in the co-creation of value and new markets. With annual sales now surpassing 710-billion yen (US$6.5 billion), Toshiba Electronic Devices & Storage Corporation looks forward to building and to contributing to a better future for people everywhere.