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5A PWM DC Motor Speed Controller - 3V-35V Mini Regulator with Switch

5A PWM DC Motor Speed Controller - 3V-35V Mini Regulator with Switch

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SpecificationDetails
Input Voltage3V - 35V DC
Control Power90W (Maximum)
Quiescent Current0.015A (Standby)
PWM Duty Cycle1% - 100%
PWM Frequency10 kHz
Output Current0A - 5A (Max)
Price
₹ 93.22 ₹ 93.22
(Tax included)

Barcode: 72510

Product Description

The 5A PWM DC Motor Speed Regulator is an ultra-compact and efficient solution for controlling the speed of small DC motors and the brightness of LED strips. This versatile module operates across a wide voltage spectrum (3V to 35V), making it compatible with everything from a single Lithium cell to a 24V industrial power supply. By utilizing Pulse Width Modulation (PWM), the controller adjusts the average power delivered to the load without significantly reducing torque, ensuring smooth operation even at low speeds. The integrated potentiometer features a built-in "Off" switch, providing a convenient all-in-one power and speed interface for DIY hobbyist projects and portable electronic devices.

Key Features

  • Wide Input Voltage Range: Supports a broad DC range from 3V up to 35V, ideal for 5V, 12V, and 24V applications.

  • Torque-Efficient PWM: Employs high-frequency switching to maintain motor torque across the entire speed range, preventing the motor from stalling at low RPM.

  • Integrated Power Switch: The speed control knob includes a tactile "click" to power down the module completely, saving battery life.

  • SMT High-Performance Design: Built with high-quality surface-mount components for a small footprint that fits into tight enclosures and robotic chassis.

  • Large Capacitance Filtering: Equipped with high-frequency electrolytic capacitors to minimize electrical noise and stabilize the output signal.

Technical Details

  • Potentiometer: 10k Ohm with integrated On/Off switch.

  • Protection: Includes a 5A self-recovery fuse (Model dependent/external recommended).

  • Cooling: Passive cooling via PCB copper planes; suitable for 5A peak loads.

Prototyping and Engineering Tips from Robogears

  • The "Continuous Load" Rule: While the module is rated for 5A, this is often a peak rating. For long-term industrial or 24/7 use, we recommend keeping the continuous current draw below 3A to prevent thermal stress on the MOSFET.

  • Input vs. Output Voltage: This regulator is a "dimmer" style PWM controller. It does not boost voltage. If you input 12V, your maximum output to the motor will be 12V.

  • Protect Your Controller: When using this with high-torque inductive motors, consider adding a 1N5408 diode in parallel with the motor (in reverse bias) to act as a "freewheeling" diode. This protects the onboard MOSFET from high-voltage spikes during sudden stops.

  • Wiring Polarity: CRITICAL: DC controllers are sensitive to input polarity. Swapping the "Power +" and "Power -" wires can instantly damage the internal PWM IC. Always double-check your connections before clicking the knob "On."

  • LED Dimming: This module works excellently as a high-power LED dimmer. Because it operates at 10kHz, the dimming will appear flicker-free to the human eye and most standard cameras.

Package Includes

  • 1 x 5A PWM DC Motor Speed Regulator Module (3V-35V)

  • 1 x Potentiometer Knob

Disclaimer: Ensure your input DC voltage does not exceed 35V. This controller is designed for Brushed DC motors only and is not compatible with Brushless (BLDC) or AC motors. Do not use this device to control AC mains-powered equipment. Always operate within the 90W power limit to avoid overheating.