15A Single DC Motor Driver

The DFRobot motor driver controls one DC motor with 12 to 36 V and up to 15 A continuous current with a simple heat sink. The direction is selected via IN1 and IN2, the speed via PWM. A 5 V output with 500 mA can supply an Arduino via its 5 V pin. Undervoltage lockout (UVLO) and ESD protection on the interface protect the system.

Recommended Accessories:

Features:

One channel with the inputs IN1, IN2 and PWM
IN1 HIGH and IN2 LOW: forward; IN1 LOW and IN2 HIGH: reverse; both LOW: brake; both HIGH: output free
Before every change of direction brake first (IN1 and IN2 LOW), according to DFRobot for more than 0.1 s, especially at full speed
Control inputs for 3.3 V and 5 V logic
Continuous current 12 A without heat sink, 15 A with simple heat sink, 20 A with thick heat sink or cooling system; above 15 A the driver needs cooling, such as a fan or heat sink
Output 5VO with 5 V and 500 mA, connect to the 5 V pin of an Arduino, not to VIN; 5VO is not an input
DFRobot recommends a 20 A fuse between supply and driver
The back has wide bare traces: do not mount on conductive surfaces, insulate if necessary
Pluggable terminals, wires with male or female ends fit

Application Examples:

Strong gear motors with 12 V, 24 V or 36 V
Chassis, winches and lifting drives
Pumps and fans with DC motor

Documentation:

Wiki DFRobot DRI0042 with Arduino example code

Technical Data:

Manufacturer: DFRobot
Manufacturer SKU: DRI0042
IC according to DFRobot: LM2575
Channels: 1
Supply voltage: 12 V to 36 V DC, limits 6.5 V to 40 V
Continuous current: 12 A without heat sink, 15 A with simple heat sink, 20 A with thick heat sink or cooling system
Peak current: 110 A for about 100 ms (temperature dependent)
Control level: HIGH 2.0 V to 5.5 V, LOW 0 V to 0.8 V
Speed: PWM, minimum valid pulse width 200 ns
5 V output: max. 500 mA
Connections: 9 - 36V (plus), PGND, 5VO, PWM, IN1, IN2, COM (GND), OUT1, OUT2
Operating temperature: -25 °C to 85 °C
Mounting holes: M3
Dimensions: 55 × 55 × 20 mm
Weight: 42 g