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-current motor driver designed for controlling DC motors with a maximum continuous current of 43A. This robust H-bridge driver integrates advanced protection features, including overcurrent and thermal overload safeguards, making it ideal for high-power motor control applications.

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

The BTS 7960 is a dual high-side and low-side MOSFET driver with integrated protection features. Below are its key technical details:

The BTS 7960 module typically features the following pinout:

1. Power Supply: Connect the VCC pin to a power source within the range of 5.5V to 27V. Ensure the power supply can handle the motor's current requirements.
2. Motor Connection: Attach the motor terminals to the Motor+ and Motor- pins.
3. Logic Inputs: Connect the RPWM and LPWM pins to a microcontroller (e.g., Arduino) to control motor speed and direction using PWM signals.
4. Enable Pins: Set the R_EN and L_EN pins HIGH to enable the respective sides of the H-bridge.
5. Grounding: Ensure all grounds (GND) are connected to a common ground in the circuit.

• Use a heat sink or active cooling for the BTS 7960 module when operating at high currents to prevent thermal shutdown.
• Add appropriate decoupling capacitors near the VCC pin to reduce voltage ripple.
• Ensure the motor's stall current does not exceed the module's peak current rating (50A).
• Use fuses or circuit breakers for additional protection in high-current applications.

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;  // Right PWM pin connected to Arduino pin 5
const int LPWM = 6;  // Left PWM pin connected to Arduino pin 6
const int R_EN = 7;  // Right enable pin connected to Arduino pin 7
const int L_EN = 8;  // Left enable pin connected to Arduino pin 8

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

  // Enable both sides of the H-bridge
  digitalWrite(R_EN, HIGH);
  digitalWrite(L_EN, HIGH);
}

void loop() {
  // Rotate motor in one direction
  analogWrite(RPWM, 200);  // Set speed (0-255)
  analogWrite(LPWM, 0);    // Ensure opposite side is off
  delay(2000);             // Run for 2 seconds

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

  // Rotate motor in the opposite direction
  analogWrite(RPWM, 0);
  analogWrite(LPWM, 200);  // Set speed (0-255)
  delay(2000);             // Run for 2 seconds

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

1. Motor Not Spinning:

   • Ensure the power supply voltage is within the specified range (5.5V to 27V).
   • Verify that the R_EN and L_EN pins are set HIGH to enable the H-bridge.
   • Check the PWM signal connections (RPWM and LPWM) from the microcontroller.

2. Overheating:

   • Use a heat sink or active cooling to dissipate heat during high-current operation.
   • Reduce the motor's load or duty cycle to lower the current draw.

3. Erratic Motor Behavior:

   • Ensure all ground connections are properly connected.
   • Add decoupling capacitors near the VCC pin to stabilize the power supply.

4. No Current Sensing Output:

   • Verify the IS pin connection and ensure it is properly configured for monitoring.

Q: Can the BTS 7960 handle brushless DC motors?
A: No, the BTS 7960 is designed for brushed DC motors. For brushless motors, consider using a dedicated brushless motor driver.

Q: What is the maximum PWM frequency supported?
A: The BTS 7960 supports PWM frequencies up to 25kHz.

Q: Can I use the BTS 7960 with a 3.3V microcontroller?
A: Yes, the logic inputs (RPWM, LPWM, R_EN, L_EN) are compatible with both 3.3V and 5V logic levels.

Q: Is reverse polarity protection included?
A: No, the BTS 7960 does not have built-in reverse polarity protection. Use an external diode for protection if needed.