The TB6612FNG is a dual H-bridge motor driver IC manufactured by ASD. It is designed to control two DC motors or one stepper motor with precision and efficiency. This component supports PWM (Pulse Width Modulation) for speed control, direction control, and includes built-in safety features such as overcurrent protection and thermal shutdown. Its compact design and versatile functionality make it a popular choice for robotics, automation, and other motor control applications.
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This circuit is an emergency alert system that uses a NUCLEO-F072RB microcontroller to send SMS alerts and make calls via a SIM800L GSM module, while obtaining location data from a GPS NEO 6M module. The system is powered by a Li-ion battery and includes a TP4056 module for battery charging and protection, with a rocker switch to control power to the microcontroller.
This circuit is a remote-controlled robotic system featuring an Arduino Pro Mini, a TB6612FNG motor driver, and an NRF24L01 wireless module. The Arduino controls four DC motors via the motor driver and communicates wirelessly using the NRF24L01 module, while an OV7670 camera module and an HC-05 Bluetooth module provide additional functionality.
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.
This circuit is a remote-controlled motor system using two ESP32 microcontrollers and joystick modules. One ESP32 reads joystick positions and transmits them via Bluetooth to the second ESP32, which controls two DC motors through a TB6612FNG motor driver. The system includes LEDs for status indication and is powered by a 9V battery and a LiPo battery.
Stepper motor control for 3D printers and CNC machines
Technical Specifications
The TB6612FNG is a robust motor driver IC with the following key specifications:
Parameter
Value
Operating Voltage (Vcc)
2.7V to 5.5V
Motor Voltage (VM)
4.5V to 13.5V
Output Current (per channel)
1.2A (continuous), 3.2A (peak)
Control Interface
PWM and logic inputs
Standby Current
1 µA (typical)
Operating Temperature
-20°C to +85°C
Built-in Protections
Overcurrent, thermal shutdown
Pin Configuration and Descriptions
The TB6612FNG comes in a 16-pin package. Below is the pin configuration and description:
Pin Number
Pin Name
Description
1
AIN1
Input signal for Motor A (controls direction)
2
AIN2
Input signal for Motor A (controls direction)
3
PWMA
PWM input for Motor A (controls speed)
4
A01
Output 1 for Motor A
5
A02
Output 2 for Motor A
6
VM
Motor power supply (4.5V to 13.5V)
7
GND
Ground
8
STBY
Standby control (active high to enable the IC)
9
B02
Output 2 for Motor B
10
B01
Output 1 for Motor B
11
PWMB
PWM input for Motor B (controls speed)
12
BIN2
Input signal for Motor B (controls direction)
13
BIN1
Input signal for Motor B (controls direction)
14
VCC
Logic power supply (2.7V to 5.5V)
15
GND
Ground
16
NC
No connection
Usage Instructions
How to Use the TB6612FNG in a Circuit
Power Connections:
Connect the VM pin to the motor power supply (4.5V to 13.5V).
Connect the VCC pin to the logic power supply (2.7V to 5.5V).
Connect the GND pins to the ground of the circuit.
Motor Connections:
Connect the motor terminals to A01 and A02 for Motor A, and B01 and B02 for Motor B.
Control Signals:
Use the AIN1 and AIN2 pins to control the direction of Motor A, and BIN1 and BIN2 for Motor B.
Provide PWM signals to the PWMA and PWMB pins to control the speed of Motor A and Motor B, respectively.
Set the STBY pin high to enable the IC.
Logic Levels:
Ensure that the control signals are within the logic voltage range (2.7V to 5.5V).
Example Arduino Code
Below is an example of how to control two DC motors using the TB6612FNG and an Arduino UNO:
// 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 speed control (PWM)
const int BIN1 = 7; // Motor B direction pin 1
const int BIN2 = 8; // Motor B direction pin 2
const int PWMB = 6; // Motor B speed control (PWM)
const int STBY = 4; // 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() {
// Example: Run Motor A forward at 50% speed
digitalWrite(AIN1, HIGH);
digitalWrite(AIN2, LOW);
analogWrite(PWMA, 128); // 50% duty cycle (0-255)
// Example: Run Motor B backward at 75% speed
digitalWrite(BIN1, LOW);
digitalWrite(BIN2, HIGH);
analogWrite(PWMB, 192); // 75% duty cycle (0-255)
delay(2000); // Run for 2 seconds
// Stop both motors
analogWrite(PWMA, 0);
analogWrite(PWMB, 0);
delay(2000); // Pause for 2 seconds
}
Important Considerations
Always ensure that the motor voltage (VM) does not exceed 13.5V.
Use appropriate decoupling capacitors near the power supply pins to reduce noise.
Avoid exceeding the maximum continuous current rating of 1.2A per channel.
Ensure proper heat dissipation to prevent thermal shutdown.
Troubleshooting and FAQs
Common Issues and Solutions
Motors Not Running:
Verify that the STBY pin is set high to enable the IC.
Check the power supply connections for VM and VCC.
Motor Running in the Wrong Direction:
Swap the logic levels on the direction control pins (AIN1, AIN2, BIN1, BIN2).
Overheating:
Ensure that the current drawn by the motors does not exceed the IC's maximum rating.
Add a heatsink or improve ventilation if necessary.
PWM Signal Not Working:
Verify that the PWM signal is within the correct frequency range (typically 20kHz or lower).
Check the connections to the PWMA and PWMB pins.
FAQs
Q: Can the TB6612FNG drive stepper motors?
A: Yes, the TB6612FNG can control a bipolar stepper motor by using both H-bridge channels.
Q: What happens if the IC overheats?
A: The TB6612FNG has a built-in thermal shutdown feature that disables the outputs to protect the IC.
Q: Can I use the TB6612FNG with a 3.3V microcontroller?
A: Yes, the logic voltage range (2.7V to 5.5V) is compatible with 3.3V microcontrollers.
Q: Is it necessary to use external diodes for motor protection?
A: No, the TB6612FNG has built-in flyback diodes for motor protection.
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