New automotive BLDC pre-driver IC supports ASIL-D

16-11-2021 | Toshiba | Automotive & Transport

Toshiba Electronics Europe GmbH now offers a new three-phase automotive BLDC motor driver IC that supports functional safety. The new TB9083FTG will be employed with BLDC motors for many automotive applications, including EPS systems and electric brakes, among others.

The new device is a three-phase gate driver for external N-channel power MOSFETs that are employed to drive a three-phase BLDC motor. The device is compliant with ISO 26262 2nd ed and supports the highest functional safety grade at the ASIL-D level. Functional safety standards, including ISO 26262, look to reduce risk from system failures indicating that the new device can be utilised in the most safety-critical automotive systems, including steering and braking. To support this, the device includes ABIST and LBIST self-diagnosis and is provided with an ASIL safety manual and safety reports.

Able to operate PWM signals up to 20kHz, the driver incorporates three pre-driver channels for safety relays and a built-in amplifier for motor current detection (with six options for the gain setup). Communication is through a CRC-enabled SPI bus.

It is ideal for rugged automotive environments and can operate down to -40C and up to a maximum ambient (Ta) of +150C or a maximum junction temperature (Tj) of +175C. The device is undergoing AEC-Q100 qualification.

Reducing the total PCB mounting area, the driver is contained in a small P-VQFN48-0707-0.50-005 package with a 7mm x 7mm footprint. The package includes wettable flanks as needed for automotive quality inspection.

By Natasha Shek