Toshiba's new automotive brushless DC motor gate driver IC helps improve the safety of vehicle electrical components

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Toshiba's new automotive brushless DC motor gate driver IC helps improve the safety of vehicle electrical components

May 27 , 2023 0

Toshiba Electronic Components & Storage Corporation announced the launch of the Automotive brushless DC motor gate driver IC, the "TB9083FTG", which is suitable for applications such as electric steering assist systems (EPS), electric braking systems and drive-by-wire shift systems.

The on-board equipment must be able to provide the relevant performance required by the ISO 26262 road Vehicle Functional Safety standard. Semiconductor chips and electronic components used in in-vehicle devices are no exception. The TB9083FTG is a new product that controls and drives an external n-channel power MOSFETs used to drive 3-phase brushless DC motors. It is ideally suited to meet the requirements of the ISO 26262 Functional safety standard, 2nd edition and supports ASIL-D for high safety level on-board systems. As a result, the new products are ideal for in-vehicle applications using DC brushless motors, such as EPS, electric braking and drive-by-wire shift systems.

For systems such as EPS that require safety relays, the TB9083FTG has a built-in 3-channel gate drive to control and drive the safety relays of the motor and power supply. This eliminates the need for external components and helps reduce the number of parts.

The TB9083FTG is packaged in P-VQFN48-0707-0.50-005 with solderable flanking [4]. The package facilitates visual inspection of solder joints using an automated Optical inspection (AOI) system and helps improve solder joint reliability. In addition, Toshiba has verified that it can withstand 3,000 cycles in the mount temperature cycle test and obtained the relevant data, so that customers can use this QFN package with complete confidence.

By using a small package (7.0mm×7.0mm (typical value)), the TB9083FTG's mounting area is reduced by approximately 66% compared to existing products [5]. This helps control the mount area and provides a redundant design that effectively ensures a higher level of safety as the number of electronic components on the ECU board increases.