Dual TB9051FTG Motor Driver Shield for Arduino Pololu

DESCRIPTION

This motor driver shield and its corresponding Arduino library make it easy to control two bidirectional, brushed DC motors with an Arduino or compatible board. The board features a pair of Toshiba TB9051FTG motor drivers, which operate from 4.5 to 28 V and can deliver up to 2.6 A per channel continuously, and includes current sense circuitry, reverse battery protection, and logic gates to reduce the required number of I/O pins. The drivers automatically limit the peak current to around 5 A, which they can deliver for a few seconds in typical applications before the thermal protection activates.

This versatile motor driver is intended for a wide range of users, from beginners who just want a plug-and-play motor control solution for their Arduinos (and are okay with a little soldering) to more advanced users who want a general-purpose dual-channel shield to use with other microcontroller boards, outside of the Arduino environment.

The Arduino pin mappings can be fully customised if the defaults are not convenient, and the simplified TB9051FTG control lines are broken out along the left side of the board, providing a convenient interface point for other microcontroller boards. This versatility, along with an option to power the Arduino from the shield, either directly or through an added regulator, sets this board apart from similar competing motor shields.

Please Note:

• Arduino not included
• Take care when handling this product and other components connected to it as it can get hot during use.

FEATURES

• Dual-channel H-bridge motor driver in the form factor of an Arduino shield
• Wide operating voltage range: 4.5 V to 28 V
• Output current: up to 2.6 A continuous (5 A peak) per motor
• Automatic current chopping feature helps prevent overheating by gracefully reducing power rather than abruptly shutting down
• PWM operation up to 20 kHz, which is ultrasonic and allows for quieter motor operation
• Current sense voltage output proportional to motor current (approx. 500 mV/A; only active while H-bridge is driving)
• Motor indicator LEDs show what the outputs are doing even when no motor is connected
• Can be used with an Arduino or Arduino-compatible board (through the stackable shield headers) or with other microcontroller boards (through the 0.1″ header along the left side)
• Arduino pin mappings can be customised if the default mappings are not convenient for use
• Secondary access points for most Arduino pins, all on the same 0.1″grid
• Exposed solderable ground pad below each driver IC on the bottom of the PCB
• Reverse-voltage protection on motor supply
• Robust drivers:
• Transient operation (< 500 ms) up to 40 V
• Under-voltage lockout and protection against over-current/short-circuit and over-temperature
• Active-low error outputs indicate over-current, over-temperature, under-voltage, or VCC over-voltage conditions for each driver

RESOURCES

• TB9051FTG summary
• Schematic diagram of the Dual TB9051FTG Motor Driver Shield for Arduino
• Dimension diagram of the Dual TB9051FTG Motor Driver Shield for Arduino
• Arduino library for the Pololu Dual TB9051FTG Motor Driver Shield
• TB9051FTG documentation