Toshiba Unveils Brushless Motor Pre-Driver IC for Safety in EPS

By CIOReview | Wednesday, September 30, 2015

SAN JOSE, CA: To achieve functional safety for use in electric power steering systems (EPS) Toshiba America Electronic Components (TAEC) has released a brushless motor pre-driver IC, called the TB9081FG.

Designed to be complaint with Automotive Safety Integrity Level D (ASIL D), the most rigorous measure defined within functional safety-based standard ISO26262, it now joins a toughportfolio of brushed and brushless motor driver ICs that address a range of automotive applications.

The new release highlights eleven channels, three each high side and low side and five fail-safe side channels, a voltage range of 4.5 to 18V and operating temperature range of -40 to 125 degree Celsius. It also includes detection circuits, VB over/under, VCC over/under, over temperature detection circuits and short detection circuits. The TB9081FG is enclosed in an LQFP64-P-1010-0.50E.

“Demand for safety-critical automotive systems such as EPS continues to rise as automakers and their electronics suppliers strive to meet the requirements of ASIL D. Toshiba is committed to ensuring that our customers have access to the safety-optimized components they need to build and integrate these advanced systems,” says Deepak Mithani, Senior Director, Mixed-Signal Business Unit, System LSI Group at TAEC.

Prominent features of the new release are, failure detection circuits for functional safety, diagnosis circuit for failure detection circuits for functional safety, built-in fail-safe relay pre-driver circuits, under voltage operation and pre-driver operation is selectable on failures detection.

Moreover, the company has carried out a series of functional safety analyses to simulate several system failures and provides customers with documentation, like FMEDA, to support safety analysis and design.