Smallest MCU with built-in pre-driver for motor control

Toshiba has launched the TMPM37AFSQG microcontroller (MCU) as the latest addition to its ARM Cortex-M3-based TX03 series. The IC is claimed to be the world’s smallest vector control MCU to incorporate an original coprocessor, the Vector Engine Plus, and a pre-driver to implement brushless DC motor control.

The TMPM37AFSQG contains a pre-driver that directly drives the MOSFET in small applications, including small motors, server fans, small cooling fans, vent fans, electric fans, ceiling fans and pumps. The IC features a maximum frequency of 40MHz an operating voltage of 4.5 to 5.5V with the pre-driver operating at 6 to 32V.

A single-power supply is also feasible since the power of the MCU is internally supplied from the power of the pre-driver. Furthermore, peripheral parts, such as an Op-Amp essential for current detection using shunt resistors and a comparator for over-current detection, have been incorporated in a QFN32 5 x 5 x 0.5mm package, minimising mounting space.

The IC is claimed to perform efficient vector control with low vibration, low noise motor control and improve motor performance in user applications.