The device supports the trend among automotive OEMs of replacing brushed DC motors with quieter, longer-lasting BLDC motors to drive body system applications like powered sliding passenger doors, power tailgates, and adjustable seats. The device can also drive BLDC motors to enhance the power performance of electric pumps and fans.
The main functions of the gate driver IC that were optimised include the 6-channel gate-driver structure, the additional gate-driver output to control the external MOSFET for reverse polarity protection, and the operational amplifier for one-channel motor current sensing, SPI communication, and the motor emergency stop function.
Protection circuitry includes power supply under-voltage detection, charge pump overvoltage detection, thermal shutdown, and MOSFET drain-source voltage (VDS) monitoring.
The TB9084FTG is housed in a compact P-VQFN36-0606-0.50 package, measuring just 6mm×6mm, contributing to the miniaturisation of equipment. The operating temperature range is from -40 to +150°C, and the IC conforms to the AEC-Q100 (Grade 0) qualification.
In addition, this package features a wettable flank structure, which facilitates automated optical inspection (AOI) to ensure the solder joint reliability.
