How to Use ponte h TB6612FNG: Examples, Pinouts, and Specs

Introduction

The TB6612FNG is a dual H-bridge motor driver IC designed for controlling two DC motors or one stepper motor. It supports motor voltage ranges from 2.5V to 13.5V and offers features such as PWM (Pulse Width Modulation) control for speed regulation, direction control, and built-in thermal shutdown protection. This compact and efficient IC is widely used in robotics, automation, and other motor control applications.

Explore Projects Built with ponte h TB6612FNG

Use Cirkit Designer to design, explore, and prototype these projects online. Some projects support real-time simulation. Click "Open Project" to start designing instantly!

Arduino Nano Controlled Robot with Ultrasonic Sensor and Dual Motor Drivers

This circuit features an Arduino Nano microcontroller interfaced with a TB6612FNG motor driver to control two DC Mini Metal Gear Motors. It also includes an HC-SR04 Ultrasonic Sensor for distance measurement, a 5 channel IR sensor for line tracking, and a Servomotor SG90 for positioning tasks. The system is powered by a 12V battery, with the Arduino Nano managing sensor inputs and motor outputs to perform tasks such as navigation or automation.

Open Project in Cirkit Designer

Arduino-Controlled Dual Motor Driver with IR Sensing

This circuit controls two DC motors using a TB6612FNG motor driver, which is interfaced with an Arduino Mega 2560 microcontroller. The Arduino provides PWM signals to control the speed and direction of the motors. Multiple IR sensors are connected to the Arduino's analog inputs, likely for sensing the environment or for line-following capabilities in a robot.

Open Project in Cirkit Designer

Arduino-Controlled Line Following Robot with H-Bridge Motor Driver and IR Sensors

This circuit is designed to control two DC motors using an H-bridge (ponte h) connected to an Arduino UNO microcontroller. The Arduino receives input from two TCRT 5000 IR sensors to determine the path and controls the motors to move forward, backward, or turn left/right based on the sensor readings. The motors are powered by a 2x 18650 battery pack, and the entire system is intended for applications such as line following robots or automated guided vehicles.

Open Project in Cirkit Designer

Arduino Nano Motor Control System with Pushbutton Interface

This circuit uses an Arduino Nano to control a TB6612FNG motor driver, which in turn controls two motors. The circuit also includes two pushbuttons for user input, allowing the Arduino to receive commands and control the motor driver accordingly.

Open Project in Cirkit Designer

Common Applications

• Robotics: Driving wheels or actuators in robotic systems
• Automation: Controlling conveyor belts or small machinery
• DIY Projects: Motorized toys, RC vehicles, and hobbyist electronics
• Stepper Motor Control: Driving stepper motors for precise positioning

Technical Specifications

Key Technical Details

Pin Configuration and Descriptions

The TB6612FNG has 24 pins. Below is a summary of the key pins:

Usage Instructions

How to Use the TB6612FNG in a Circuit

1. Power Connections:

   • Connect the motor power supply (VM) to the motor voltage input pin (Pin 6). Ensure the voltage is within the range of 2.5V to 13.5V.
   • Connect the logic power supply (VCC) to Pin 8. This should be between 2.7V and 5.5V.
   • Connect the GND pin (Pin 7) to the ground of your circuit.

2. Motor Connections:

   • Connect the motor terminals to the output pins (AO1, AO2 for Motor A; BO1, BO2 for Motor B).

3. Control Signals:

   • Use the AIN1, AIN2, and PWMA pins to control Motor A.
   • Use the BIN1, BIN2, and PWMB pins to control Motor B.
   • Apply PWM signals to the PWMA and PWMB pins to control motor speed.
   • Set the STBY pin high to enable the IC.

4. Direction Control:

   • Set AIN1 high and AIN2 low to rotate Motor A in one direction.
   • Set AIN1 low and AIN2 high to rotate Motor A in the opposite direction.
   • Similarly, use BIN1 and BIN2 for Motor B.

5. PWM Control:

   • Apply a PWM signal (up to 100 kHz) to the PWMA or PWMB pins to adjust motor speed.

Example: Using TB6612FNG with Arduino UNO

Below is an example Arduino sketch to control two DC motors using the TB6612FNG:

// Define motor control pins
const int AIN1 = 2;  // Motor A direction pin 1
const int AIN2 = 3;  // Motor A direction pin 2
const int PWMA = 5;  // Motor A PWM pin
const int BIN1 = 4;  // Motor B direction pin 1
const int BIN2 = 7;  // Motor B direction pin 2
const int PWMB = 6;  // Motor B PWM pin
const int STBY = 8;  // Standby pin

void setup() {
  // Set motor control pins as outputs
  pinMode(AIN1, OUTPUT);
  pinMode(AIN2, OUTPUT);
  pinMode(PWMA, OUTPUT);
  pinMode(BIN1, OUTPUT);
  pinMode(BIN2, OUTPUT);
  pinMode(PWMB, OUTPUT);
  pinMode(STBY, OUTPUT);

  // Enable the motor driver
  digitalWrite(STBY, HIGH);
}

void loop() {
  // Motor A: Forward at 50% speed
  digitalWrite(AIN1, HIGH);
  digitalWrite(AIN2, LOW);
  analogWrite(PWMA, 128);  // 50% duty cycle (128 out of 255)

  // Motor B: Reverse at 75% speed
  digitalWrite(BIN1, LOW);
  digitalWrite(BIN2, HIGH);
  analogWrite(PWMB, 192);  // 75% duty cycle (192 out of 255)

  delay(2000);  // Run motors for 2 seconds

  // Stop both motors
  analogWrite(PWMA, 0);
  analogWrite(PWMB, 0);

  delay(2000);  // Wait for 2 seconds
}

Important Considerations

• Ensure the motor voltage (VM) matches the requirements of your motors.
• Use appropriate decoupling capacitors near the power supply pins to reduce noise.
• Avoid exceeding the maximum current ratings to prevent damage to the IC.
• Use heat sinks or proper ventilation if operating near the maximum current limits.

Troubleshooting and FAQs

Common Issues and Solutions

1. Motors Not Spinning:

   • Ensure the STBY pin is set high to enable the IC.
   • Verify that the motor power supply (VM) is connected and within the specified range.
   • Check the PWM signal and ensure it is being applied correctly.

2. Motor Spins in the Wrong Direction:

   • Swap the AIN1 and AIN2 signals (or BIN1 and BIN2 for Motor B) to reverse the direction.

3. Overheating:

   • Ensure the current drawn by the motors does not exceed 1.2A per channel.
   • Use a heat sink or improve ventilation around the IC.

4. PWM Control Not Working:

   • Verify the PWM frequency is within the supported range (up to 100 kHz).
   • Check the duty cycle of the PWM signal to ensure proper speed control.

FAQs

Q: Can I use the TB6612FNG to drive a stepper motor?
A: Yes, the TB6612FNG can drive a stepper motor by controlling the two H-bridges in a coordinated manner. You will need to generate the appropriate step and direction signals.

Q: What happens if the IC overheats?
A: The TB6612FNG has built-in thermal shutdown protection. If it overheats, it will temporarily disable the outputs until the temperature returns to a safe level.

Q: Can I use a single power supply for both VM and VCC?
A: Yes, as long as the voltage is within the range of 2.7V to 5.5V for VCC and 2.5V to 13.5V for VM. However, separate supplies are recommended for better performance.