Servo Drive Reference Model For Multi-Channel Motor Control
The servo drive reference model combines Toshiba’s optimized motor control MCUs with Toshiba’s low RDS(ON) power MOSFETs to provide highly efficient control and drive solutions for brushless DC (BLDC) motors. The modular concept offers a high degree of flexibility for the field-oriented control (FOC) and closed loop positioning of up to three BLDC servo motors with a single MCU. The reference model helps to reduce system cost and gives a quick start to the implementation of advanced servo motor systems.
Applications
- BLDC Servo Motors
- Inverter / Drives
- Robot / Cobot / SCARA
- Automated Guided Vehicle (AGV)
- Lawn Mower
- 3D Printer
Demonstration
See how the fluid design of the reference model eases the the implementation of advanced servo motor systems: Within the model Toshiba`s motor control MCUs work effectively together with Toshiba’s low RDS(ON) power MOSFETs. Hence precise and accurate movement ot the robot arm is achieved.
Base Board & MCU Board
Vector control of up to 3 BLDC servo motors by a single MCU
Toshiba M4K MCU series is dedicated to the field-oriented motor control. The built-in Vector Engine (VE) takes care for the complex vector control calculations and feeds the Programmable Motor Drive (PMD) block to generate the PWM waveforms and perform other necessary functions such as dead-time control.
Motor Control Resources
Base Board & MCU Board Schematic
The base platform hosts the MCU board with the TMPM4KNFDFG Motor Control MCU (160MHz Arm® Cortex®-M4F core, 512kB Flash, 100-pin) and allows the connection of up to three Power Stages to drive the servo motors. The on-board USB and Bluetooth® communication options can be extended by shields for Arduino. The 24/48V power conversion with reserve polarity protection circuit completes the design.
Base & MCU board products
MCU, Arm® Cortex®-M4F, 160 MHz, 100-pin |
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N-channel MOSFET, 100V/150A, DSOP adv. |
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Bluetooth® 5 module with Toshiba TC35680 |
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Level shifter |
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Low Dropout Linear Voltage Regulator (LDO) |
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High-speed Photocoupler / Photorelay |
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Small signal MOSFET |
200W Power stage / 3-phase inverter
The 3-phase inverter design is based on the 100V / 150A TPW3R70APL low-voltage MOSFET from the latest U-MOS IX process technology which provides industry leading performance. With max. RDS(ON) of just 3.7mΩ, the drive, switching and output charge losses are reduced significantly enabling efficient driving of 48V BLDC motors up to 200W.
Power stage board products
Part number |
Description |
N-channel MOSFET, 100V/150A, DSOP adv. |
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Comparator |
Encoder Sub Boards
To ensure a high flexibility for the position feedback signals, the encoder boards are exchangeable modules connected to the power stage. Currently supported interfaces are single-ended or differential hall and incremental encoder, and resolver absolute encoder.
Resolver Encoder Board
Differential Encoder Board
Servo Drive Reference Model Whitepaper
To offload the pressures placed on engineering teams and give them the head start they need in developing motor systems for their robot/AGV projects, Toshiba offers a highly flexible and simple to utilise solution. Its game-changing Servo Drive Reference Model encompasses all the essential elements of robotics-oriented motor control - the controller, the power delivery, the feedback loop, etc. The microcontroller at the heart of this reference model features an Arm® Cortex® processing core capable of running at 160MHz.
Toshiba has put together a whitepaper on robotic servo drives, which includes details of its reference model. Download it from here
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* Bluetooth® is registered trademarks of Bluetooth SIG, Inc.
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