How to Use BTS 7960 Motor Drver 43a: Examples, Pinouts, and Specs

The BTS 7960 Motor Driver, manufactured by Infineon Technologies (Part ID: B0D732VYGZ), is a high-performance H-bridge motor driver designed for controlling DC motors with a maximum current of 43A. This robust driver integrates advanced protection features, including overcurrent, overtemperature, and short-circuit protection, making it ideal for demanding motor control applications.

• Robotics and automation systems
• Electric vehicles and scooters
• Conveyor belts and industrial machinery
• High-power RC vehicles
• Smart home devices requiring motorized control

The BTS 7960 is designed to handle high-current loads while maintaining efficiency and reliability. Below are its key technical specifications:

The BTS 7960 module typically includes the following pins for interfacing:

The BTS 7960 motor driver is straightforward to use in motor control applications. Below are the steps and best practices for integrating it into your circuit:

1. Power Supply: Connect the VCC pin to a power supply capable of delivering the required voltage and current for your motor. Ensure the GND pin is connected to the common ground of the circuit.
2. Motor Connections: Attach the motor terminals to the Motor+ and Motor- pins.
3. Logic Inputs: Use a microcontroller (e.g., Arduino UNO) to provide PWM signals to the RPWM and LPWM pins. Use the R_EN and L_EN pins to enable or disable the respective half-bridges.
4. Current Sensing: Optionally, connect the IS pin to an analog input on your microcontroller to monitor motor current.

Below is an example of how to control a DC motor using the BTS 7960 with an Arduino UNO:

// Define pin connections for the BTS 7960 motor driver
const int RPWM = 5;  // PWM pin for forward rotation
const int LPWM = 6;  // PWM pin for reverse rotation
const int R_EN = 7;  // Enable pin for right half-bridge
const int L_EN = 8;  // Enable pin for left half-bridge

void setup() {
  // Set motor driver pins as outputs
  pinMode(RPWM, OUTPUT);
  pinMode(LPWM, OUTPUT);
  pinMode(R_EN, OUTPUT);
  pinMode(L_EN, OUTPUT);

  // Enable both half-bridges
  digitalWrite(R_EN, HIGH);
  digitalWrite(L_EN, HIGH);
}

void loop() {
  // Rotate motor forward at 50% speed
  analogWrite(RPWM, 128);  // 50% duty cycle (0-255)
  analogWrite(LPWM, 0);    // No reverse rotation
  delay(2000);             // Run for 2 seconds

  // Rotate motor backward at 75% speed
  analogWrite(RPWM, 0);    // No forward rotation
  analogWrite(LPWM, 192);  // 75% duty cycle (0-255)
  delay(2000);             // Run for 2 seconds

  // Stop the motor
  analogWrite(RPWM, 0);
  analogWrite(LPWM, 0);
  delay(1000);             // Pause for 1 second
}

• Heat Dissipation: The BTS 7960 can handle high currents, but it may generate significant heat. Use a heatsink or active cooling to prevent overheating.
• Power Supply: Ensure your power supply can deliver sufficient current for both the motor and the driver.
• PWM Frequency: Use a PWM frequency within the recommended range (up to 25kHz) for optimal performance.
• Protection Features: The built-in protection mechanisms are robust, but avoid prolonged operation near the maximum current limit to ensure longevity.

1. Motor Not Spinning

   • Cause: Incorrect wiring or insufficient power supply.
   • Solution: Double-check all connections and ensure the power supply meets the motor's requirements.

2. Driver Overheating

   • Cause: Excessive current draw or inadequate cooling.
   • Solution: Add a heatsink or fan to the driver and verify the motor's current draw.

3. Erratic Motor Behavior

   • Cause: Noise or unstable PWM signals.
   • Solution: Use decoupling capacitors near the power supply and ensure clean PWM signals from the microcontroller.

4. No Current Sensing Output

   • Cause: IS pin not connected or damaged.
   • Solution: Verify the connection to the IS pin and check for proper operation.

Q: Can I use the BTS 7960 with a 3.3V microcontroller?
A: Yes, the logic inputs are compatible with both 3.3V and 5V systems.

Q: What is the maximum motor voltage supported?
A: The BTS 7960 supports motor voltages up to 27V.

Q: Can I control two motors with one BTS 7960 module?
A: No, the BTS 7960 is designed to control a single DC motor.

Q: How do I stop the motor?
A: Set both RPWM and LPWM to 0 to stop the motor.

By following this documentation, you can effectively integrate the BTS 7960 motor driver into your projects and achieve reliable motor control.