This add-on board enables a Raspberry Pi (Model B+ or newer) to drive a pair of brushed DC motors. Its dual TB9051FTG motor drivers operate from 4.5 V to 28 V and can deliver a continuous 2.6 A (5 A peak) per motor. The default pin mappings make it easy to get started using our provided software, but the board also exposes most of the driver chips’ I/O pins for more specialized applications. This version ships as a partial kit; all surface-mount components are installed, but the included through-hole connectors are not soldered in.
This version of the motor driver is apartial kit, with connectors included but not soldered in.
Features
Dual-channel H-bridge motor driver in the form factor of a Raspberry Pi expansion board
Wide operating voltage range: 4.5 V to 28 V
Output current: 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
Motor indicator LEDs show what the outputs are doing even when no motor is connected
Board can optionally power the Raspberry Pi base through added regulator like theD24V10F5orD24V22F5(not included)
Python librarymakes it easy to get started using this board as a motor driver expansion board
GPIO pin mappings can be customized if the default mappings are not convenient
Remaining motor driver pins are exposed for advanced use
Exposed solderable ground pads below the driver ICs 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
Prototyping space for easier/cleaner construction of custom circuits
Dimensions
Size:65 mm × 56 mm
Weight:14 g1
General specifications
Motor driver:TB9051FTG
Motor channels:2
Minimum operating voltage:4.5 V2
Maximum operating voltage:28 V3
Continuous output current per channel:2.6 A4
Peak output current per channel:5 A
Current sense:0.5 V/A
Maximum PWM frequency:20 kHz
Reverse voltage protection?:Y5
Partial kit?:Y
Identifying markings
PCB dev codes:rpe05a
Other PCB markings:0J11290
Notes:
1.Without included connectors and mounting hardware.
2.Operation from 4.5 V to 8 V reduces maximum current output.
3.Transient operation (< 500 ms) up to 40 V.
4.Typical results at room temperature with VIN > 8 V and both channels running 90% duty cycle. Operation from 4.5 V to 8 V reduces maximum current output.
5.On motor voltage only; logic voltage does not have reverse protection.
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Manufacturer according to GPSR Pololu Corporation, Pilot Rd. 920, 89119 Las Vegas, Nevada, Vereinigte Staaten, [email protected], https://www.pololu.com/
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