Toshiba Electronic Devices & Storage Corporation (“Toshiba”) has started to ship engineering samples of “TB9M040FTG,” a motor control device with built-in power MOSFETs for three-phase brushless DC motor drives. The latest addition to Toshiba‘s “SmartMCD” series of motor control devices that integrates a microcontroller (MCU) and a motor driver, TB9M040FTG, can directly drive three-phase brushless DC motors and is suitable for controlling small motors used in automotive equipment.
Electrification of the moving parts of vehicles continues to advance, and demand is increasing for small three‑phase brushless DC motors for use in applications such as electric valves, dampers and flaps in heating, ventilation, and air conditioning (HVAC) systems, and in grille shutters. This is also stimulating demand for devices with fewer components and downsized electronic control units (ECUs), and for field-oriented control (FOC) support functions and sensorless control that secure more advanced motor control and reduce CPU loads.
TB9M040FTG integrates an MCU (Arm Cortex‑M23 core), flash memory, a motor driver capable of directly driving three‑phase brushless DC motors, a high‑side driver that can be used for power supply purposes, a local interconnect network (LIN) transceiver, and a power supply system that can operate at the automotive battery level, all housed in a small VQFN36 package (6×6mm (typ.)). It also incorporates a Vector Engine (VE) integrating Toshiba’s proprietary hardware, which helps to reduce CPU loads in FOC‑controlled motor applications and contributes to smaller software programs.
It also features a back electromotive force (BEMF) detection function, enabling sensorless square-wave control.
In combination, these features enable the downsizing of automotive equipment and reduced component counts, while realising advanced and complex motor control; TB9M040FTG can support a wide range of small automotive motor applications, and LIN communication with the ECU realises control of small motors within automotive systems.
Toshiba will continue to expand the lineup of its SmartMCD series equipped with the functions required for motor drives in automotive systems and to contribute to automotive system downsizing and lower component counts.
Applications
Automotive equipment
- Small brushless DC motor applications such as electric valves, HVAC dampers, flaps, and grille shutters
Features
- Integrates a motor driver for three‑phase brushless DC motors, enabling direct drive of three‑phase brushless DC motors (with built‑in motor‑drive MOSFETs)
- 32-bit MCU (Arm Cortex-M23), operating frequency: 40MHz (built-in low-speed and high-speed oscillators)
- Built-in memory with ECC (SEC/DED)
Code Flash: 80KBytes, SRAM: 4KBytes - Built-in vector engine (VE) for FOC control and programmable motor driver (PMD)
- Built-in 1-shunt resistor current sense amplifier, and 12-bit A/D converter
- One‑channel high‑side driver capable of supplying power to devices such as Hall‑effect sensor ICs
- Communication interfaces: LIN, UART (shared with LIN), and SPI
- Compliant with AEC‑Q100 Grade 0
- Compliant with ASIL‑B
Main Specifications
| Part number | TB9M040FTG | ||
| Motor driver | Three‑phase brushless DC motor, 1‑channel drive (up to 2A) | ||
| Main functions | Motor control driver: shunt resistor and current‑sense amplifierHardware for FOC control / square wave control (VE, PMD, ENC)High‑side driver (HSD): One channel (Vcc output) (power supply for devices such as Hall‑effect sensor ICs (5V (max), 40mA), ON/OFF control supported)LIN physical layer: One channel (responder only) | ||
| Communication interfaces | LIN, UART (shared with LIN), SPI | ||
| Main error detections | Undervoltage detection (Vcc (generated 5 V))Overvoltage detection (Vdd (generated 1.5 V))Overcurrent detection (motor current, high‑side driver)VCP (charge pump voltage) detection (overvoltage/undervoltage)VDS (drain‑source voltage of built‑in MOSFETs) detection (high‑side/low‑side)Thermal shutdown, etc. | ||
| Absolute maximum ratings | Power supply voltage Vbat (V) | -0.3 to +40 | |
| Operating ranges | Power supply voltage Vbat (V) | 6 to 18 | |
| Operating temperature Topr (°C) | Ta=-40 to +150 | ||
| Tj=-40 to +175 | |||
| Package | Name | P-VQFN36-0606-0.50-004 | |
| Size (mm) | typ. | 6.0×6.0 | |
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