which incorporates the Toshiba Vector Engine Plus (VE+) coprocessor [3] and a pre-controller [4] to enable the control of brushless DC motors.
The TMPM37AFSQG pre-controller can directly drive MOSFETs for three-phase complementary PWM output with a minimum drive time of 25 ns. This makes the microcontroller ideal for controlling small motors, server fans, small cooling fans, electric fans, ceiling fans, pumps, and toys. The microcontroller core is powered by the pre-controller voltage, allowing a single power supply to manage the entire device. [5]
Equipped with an ARM Cortex-M3 core capable of operating at speeds up to 40 MHz, a 12-bit A/D converter, and an integrated vector control platform, the TMPM37AFSQG enables high-efficiency, low-vibration, and low-noise motor control, greatly improving motor performance.
Also integrated into the device is an operational amplifier [6] essential for current sensing, using a single shunt resistor [7] , and a comparator [8] for overcurrent detection. All functions have been incorporated into a small package (VQFN32 5 x 5 mm, 0.5 mm pitch), designed to minimize mounting space.
Sample shipments will begin in mid-January 2016.
Notes:
[1]: Vector control: Advanced technology that effectively controls motor rotation from low to high speeds.
[2]: From the ARM® Cortex®-M3-based microcontroller incorporating the vector motor and pre-controller. Toshiba survey as of November 30, 2015.
[3]: Vector Engine Plus: Toshiba's original coprocessor for vector control that operates independently of the CPU in the microcontroller.
[4]: Pre-controller: Required for controlling power devices, such as a FET, MOSFET, or IGBT.
[5]: Power supply operation is possible when the pre-controller operating voltage VM = 12V. If VM = 24V, the 5V power for the microcontroller must be supplied externally.
[6]: Op-Amp: Operational Amplifier.
[7]: Shunt resistor: A series resistor for current measurement.
[8]: Comparator: A device that compares two voltages or currents.
