Toshiba has unveiled the TB9081FG, a brushless motorpre-driver IC, enhanced to achieve functional safety for use in electric power steering systems (EPS).
Toshiba: a brushless motor pre-driver IC TB9081FG for electric power steering systems (EPS). Source: ToshibaThe new device integrates key main functions such as 3-phase pre-drivercircuits, fail-safe relay pre-driver circuits, motor current detection circuits as well as various failure detection circuits. An initial diagnosis circuit to detect latent faults in the failure detection circuits is also incorporated to secure higher functional safety.
Toshiba has also carried out a range of functional safety analyses to simulate various system failures and will provide customers with documentation such as FMEDA, to support safety analysis and design.
Key features include:
- 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
- Pre-driver operation is selectable on failures detection.
The TB9081FG features 11 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°C. Detection circuits include VB over/under, VCC over/under, over temperature detection circuits and short detection circuits. It is packaged in an LQFP64-P-1010-0.50E (12.0mm × 12.0mm × 1.6mm).
Sample shipments will start on September 1st, 2015, with mass production scheduled to start in August 2017.
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http://toshiba.semicon-storage.com/info/lookup.jsp?pid=TB9081FG®ion=apc&lang=en
