Toshiba TB9084FTG

Toshiba is aiming vehicle body automation with it its latest three-phase motor diver.

TB9084FTG, as it will be known “supports replacing brushed dc motors with quieter, longer-lasting BLDC motors to drive body system applications like powered sliding passenger doors, power tailgates, adjustable seats, electric pumps and fans”, it said.

The IC is designed to control the gates of seven external n-channel mosfets – six in the motor drive bridge and one for reverse polarity protection. All timing has to be done by an external MCU producing six timed PWM waveforms.

SPI communication is included, as is an operational amplifier for single-channel motor current sensing.

This amplifier is wired as a differential amplifier for a ground-referenced sense resistor. It has its own reference voltage generator, and both gain and offset can be set via the control bus.

As well as reverse-polarity, protections include: motor emergency stop, power supply under-voltage detection, charge pump over-voltage detection, thermal shut-down and mosfet drain-source voltage monitoring.

Packaging is a 6 x 6mm P-VQFN36-0606-0.50, and operation is in ambients from -40 to +150°C (junction up to 175°C) and 5.7 to 28V (40V abs max for 1s). IO is compatible with 5V and 3.3V MCUs.

Qualification is to AEC-Q100 (Grade 0), and the package has wettable flanks to aid automated optical inspection.

Find the TB9084FTG here on Toshiba’s website.