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TB6612FNG Dual DC Motor Driver
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The Motor Driver TB6612FNG Module can control up to two DC motors at 1.2A constant current (3.2A peak). The motor can be controlled by two input signals (IN1 and IN2) in one of four function modes: CW, CCW, short-brake, and stop.
The two motor outputs (A and B) can be controlled independently, and the speed of each motor is controlled by a PWM input signal with a frequency range of up to 100kHz. To remove the motor from standby mode, pull the STBY pin high.
The logic supply voltage (VCC) can range from 2.7 to 5.5VDC, while the motor supply (VM) has a maximum voltage of 15VDC. The maximum output current per channel is 1.2A. (or up to 3.2A for a short, single pulse).
All components are installed on the board as shown. On both supply lines, decoupling capacitors are installed. The TB6612FNG has all of its pins broken out to two 0.1?? pitch headers, with input pins on one side and output pins on the other.
Understand the basics and see how this module compares to others in our guide: What Is a Motor Driver? L298N & L293D Explained
Thanks to its low voltage drop and efficient MOSFET motor driver design, the TB6612FNG is the preferred choice for space-constrained, battery-powered projects like line follower robots and micro-sumo bots. Unlike older drivers, it minimizes power loss as heat, ensuring your robot runs longer and more reliably on a single battery charge.
While the L298N is a classic choice, the TB6612FNG motor driver is a significant upgrade for modern, space-constrained robotics. Here is a quick comparison:
| Feature | TB6612FNG (Recommended) | L298N |
|---|---|---|
| Output Technology | MOSFET (Highly Efficient) | BJT (Less Efficient) |
| Continuous Current | 1.2A per channel | 2A per channel |
| Peak Current | 3.2A (short pulse) | 3A (short pulse) |
| Voltage Drop & Efficiency | Low voltage drop (Maximizes battery life) | High voltage drop (~2V loss) |
| Heat Generation | Minimal (No heatsink required) | High (Requires bulky heatsink) |
| PWM Frequency | Up to 100kHz (Silent & smooth) | ~1–20kHz (Can cause motor whine) |
| Size & Footprint | Compact, breadboard-friendly | Large, heavy, and bulky |
| Best Use Case | Line follower robots, drones, battery-powered bots | Heavy-duty, mains-powered, high-current robots |
Still not sure which one fits your project? Read our detailed comparison guide: DRV8833 vs L298N vs TB6612FNG: Which Motor Driver Should You Use?
Connecting the dual DC motor driver to an Arduino is straightforward:
| Driver Model | TB6612FNG |
| Operating Voltage (VDC) | 15 |
| Peak Current | 3.2A |
| Continuous Current | 1.2A |
| No. Channels | 1 |
| Weight | 22gm |
Yes. Because the TB6612FNG contains two independent H-bridges, it can drive a small bipolar stepper motor. However, ensure your stepper motor’s coil current does not exceed the module’s 1.2A continuous (3.2A peak) rating per channel.
The TB6612FNG is significantly more compact and efficient. It uses MOSFET outputs, resulting in a much lower voltage drop and less heat generation compared to the L298N’s BJT design. While the L298N can handle slightly higher currents, it requires a bulky heatsink and wastes more power as heat. The TB6612FNG is the superior choice for battery-powered and space-constrained robotics projects.
No, a heatsink is generally not required under normal operating conditions (up to 1.2A continuous per channel). Its efficient MOSFET design keeps it cool. However, if you plan to push the module near its 3.2A peak current for extended periods, adding a small heatsink or ensuring active airflow is recommended.
The TB6612FNG drives two DC motors or one bipolar stepper at up to 1.2A per channel. It is common in small robot cars and line followers where a compact, efficient driver matters.
Motor supply VM is 4.5V to 13.5V and logic VCC is 2.7V to 5.5V, so it works with both 3.3V and 5V boards.
Use PWMA/PWMB for speed (PWM pins), AIN1/AIN2 and BIN1/BIN2 for direction, and pull STBY HIGH to enable. Connect motors to AO1/AO2 and BO1/BO2 and the motor battery to VM.
Working good satisfied
TB6612FNG Dual DC Motor Driver
very good product , nicely working and super fine quality.
Good
TB6612FNG Dual DC Motor Driver
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It is Amazing and great item in this price
Veri usefull and cheap price from other shopping site, I use this module many project. Thank you robocraze
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