Integrate 3-phase DC brushless motor drive circuit and microcontroller to achieve direct drive of small car motors
Shanghai, China, May 14, 2026- Toshiba Electronic Components and Storage Devices Co., Ltd. ("Toshiba") announced today that it has begun providing engineering samples of "TB9M040FTG". TB9M040FTG is a built-in power MOSFET used as a motor control device for driving 3-phase DC brushless motors. As Toshiba's SmartMCD ™” [1] The latest member of the motor control device series, TB9M040FTG, integrates a microcontroller (MCU) and motor drive circuit, which can directly drive 3-phase DC brushless motors and is suitable for controlling small motors used in vehicle mounted equipment.
With the continuous advancement of electrification of movable parts in vehicles, the demand for small 3-phase DC brushless motors for applications such as electric valves, dampers/flaps in HVAC systems, and grille shutters [2] (Figure 1) is growing. This has also driven the demand for fewer components and smaller electronic control units (ECUs), as well as the need for support functions and sensorless control capabilities for field oriented control (FOC) [3], which can achieve more advanced motor control and reduce CPU load.
Figure 1. Main application positions of small car mounted 3-phase DC brushless motor
TB9M040FTG integrates MCU (Arm) ® Cortex ® M23 core, flash memory, motor drive circuit that can directly drive 3-phase DC brushless motor, high edge drive circuit that can be used for power supply, local interconnect network (LIN) [4] transceiver, and power system that can operate at the voltage level of the vehicle battery, all packaged in a small VQFN36 package (6mm × 6mm (typical value)) (Figure 2). The device also integrates a vector engine (VE) using Toshiba proprietary hardware, which can reduce CPU load in motor applications controlled by FOC and help reduce software program size.
Figure 2. Motor control system based on TB9M040FTG
In addition, TB9M040FTG also has a back electromotive force (BEMF) [5] detection function, which can achieve non inductive square wave control.
By combining these features, advanced and complex motor control can be achieved while also helping to miniaturize onboard equipment and reduce the number of components; TB9M040FTG can support a wide range of small car motor applications and achieve control of small motors within the car system through LIN communication with the ECU.
Toshiba will continue to expand the SmartMCD equipped with the necessary functions for in car system motor drive ™ A series of product lines, contributing to the miniaturization and reduction of component count in automotive systems.
Application:
• Vehicle mounted equipment
Small DC brushless motor applications, such as electric valves, HVAC dampers/baffles/flaps, and intake grille louvers
Features:
Integrated motor drive circuit for 3-phase DC brushless motors, capable of directly driving 3-phase DC brushless motors (with built-in motor drive MOSFET)
32-bit MCU (Arm) ® Cortex ® M23）， Operating frequency: 40MHz (with built-in low-speed and high-speed oscillators)
• Built in memory with ECC (SEC/DED [6])
Code flash: 80KB, SRAM: 4KB
Built in vector engine (VE) and programmable motor driver (PMD) for FOC control [7]
Built in 1 shunt resistor current detection amplifier [8], and 12 bit A/D converter
Single channel high side drive circuit, capable of supplying power to devices such as Hall effect sensor ICs
Communication interfaces: LIN, UART (multiplexed with LIN), and SPI
Compliant with AEC Q100 [9] Level 0
Compliant with ASIL B [10]
Note:
[1]SmartMCD ™： The vehicle motor control driver IC (MCD) series developed by Toshiba Electronic Components and Storage Devices Co., Ltd. integrates the motor drive circuit and microcontroller into a single device.
[2] Air intake grille louver: a louver/damper mechanism installed behind the front grille of the vehicle, which can automatically open and close according to the driving state.
[3] Field Oriented Control (FOC): A typical vector control method that independently controls motor torque and magnetic flux as orthogonal components. This method uses a motor rotation reference frame (dq coordinate system) to independently control the magnetic flux component (d-axis) and torque component (q-axis).
[4] Local Interconnect Network (LIN): A serial communication protocol primarily used for communication between electronic control units (ECUs) in vehicles.
[5] Back electromotive force (BEMF): The voltage induced in the winding during motor rotation, formed by the rotor magnetic field cutting the winding, and its direction is opposite to the applied voltage.
[6] The built-in ECC (Error Correction Code) function supports 1-bit error correction (SEC) and 2-bit error detection (DED).
[7] Programmable Motor Driver (PMD): A hardware module for motor control that can perform PWM (Pulse Width Modulation) generation, current conduction control, and fault detection in hardware, thereby reducing the processing load required for motor control.
[8] 1. Current detection amplifier with shunt resistor: indirectly estimate the motor current through current detection shunt resistor and current detection amplifier.
[9] AEC Q100: A certification standard for automotive electronic components developed by the Automotive Electronics Council (AEC), covering reliability and quality requirements for automotive electronic components, particularly integrated circuit (IC).
[10] ASIL (Automotive Safety Integrity Level): Based on the ISO 26262 functional safety standard, it is an indicator used to represent the functional safety level of automobiles. ASIL-B represents a medium safety requirement level, higher than ASIL-A, and is suitable for situations where functional failures may have a certain degree of impact on personal safety or vehicles.
[11] Encoder Input Circuit (ENC): A circuit that receives encoder signals to detect the operating status of a motor, including position, speed, and direction of rotation.
For more information about the new product, please visit the following website:
TB9M040FTG
https://toshiba-semicon-storage.com/cn/semiconductor/product/automotive-devices/detail.TB9M040FTG.html
For more information about Toshiba car motor driver ICs, please visit the following website:
analog devices
https://toshiba-semicon-storage.com/cn/semiconductor/product/automotive-devices.html#Analog -Devices
