Product description
Small and powerful PWM driver board for DC motors, LED lamps, resistive heating elements or other DC loads.
The board comes with all SMD parts assembled. A potentiometer, 3-pin header, jumper and screw terminals are included, but not mounted. The connectors and potentiometer are optional and it's up to the user to assemble the board using the included parts or solder wires directly to the board.
Please note that this module is using an N-channel FET to switch the negative terminal of the connected load, or a low-side switch as it's commonly called. Make sure the connected load is NOT grounded by other means. If it's a motor that's grounded through the chassis of a car for instance, the speed will always be 100%.
The PWM frequency is set to around 12kHz for a balance between efficiency and switching noise. The frequency can be shifted down by adding a small capacitor to the two holes marked "TCap". See manual for more information.
Included parts
• 1x PCB mounted potentiometer 6mm knurled shaft
• 1x 3-pin header
• 1x 2-pin jumper
• 2x 2-pin 3.5mm pitch screw terminals
Functions
• Speed control for DC motors
• Brightness control for LED lamps
• Adjustable from 0% to 100%
• Highly efficient design, no heatsink required
• External CV or manual control
Specifications
• Supply voltage: 6 - 24 VDC
• Output current: 6 A (momentarily higher)
• Duty cycle: 0 ... 100 %
• Control voltage: 0 ... 5 V
• Dimensions: 40 x 25 mm
• Mounting holes: ø2.5 mm / 35 x 20 mm