How to Use BTS7960: Examples, Pinouts, and Specs

The BTS7960 43A H-Bridge Driver, manufactured by Yash, is a high-current motor driver designed for driving DC motors and other inductive loads. It is capable of handling currents up to 43A, making it ideal for applications requiring high power and reliability. The BTS7960 integrates advanced protection features, including overcurrent, overtemperature, and undervoltage safeguards, ensuring robust performance in demanding environments.

• Robotics and automation systems
• Electric vehicle motor control
• Conveyor belt systems
• Industrial machinery
• Remote-controlled vehicles

The following table outlines the key technical details of the BTS7960:

The BTS7960 module has the following pin configuration:

1. Power Connections:

   • Connect the motor power supply (5.5V to 27V) to the V+ pin.
   • Connect the ground of the power supply to the GND pin.
   • Provide a 5V logic supply to the VCC pin.

2. Motor Connections:

   • Connect the motor terminals to the OUT1 and OUT2 pins.

3. Control Signals:

   • Use the RPWM and LPWM pins to control the motor's speed and direction via PWM signals.
   • Enable the H-bridge by setting the R_EN and L_EN pins high.

4. Current Sensing:

   • The IS pin provides a voltage proportional to the motor current, which can be used for monitoring or feedback.

• Ensure the motor power supply voltage does not exceed 27V.
• Use a heatsink or active cooling if operating at high currents for extended periods.
• Avoid connecting the module directly to a power source without proper decoupling capacitors.
• Use appropriate fuses or circuit breakers to protect against short circuits.

Below is an example of how to control the BTS7960 with an Arduino UNO:

• Connect VCC to the Arduino's 5V pin.
• Connect GND to the Arduino's GND pin.
• Connect RPWM to Arduino pin 9.
• Connect LPWM to Arduino pin 10.
• Connect R_EN and L_EN to Arduino pins 7 and 8, respectively.
• Connect the motor terminals to OUT1 and OUT2.

// Define control pins for the BTS7960
#define RPWM 9  // PWM pin for right motor direction
#define LPWM 10 // PWM pin for left motor direction
#define R_EN 7  // Enable pin for right half-bridge
#define L_EN 8  // Enable pin for left half-bridge

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

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

void loop() {
  // Rotate motor in one direction at 50% speed
  analogWrite(RPWM, 128); // 50% duty cycle
  analogWrite(LPWM, 0);   // No signal to LPWM
  delay(2000);            // Run for 2 seconds

  // Rotate motor in the opposite direction at 75% speed
  analogWrite(RPWM, 0);   // No signal to RPWM
  analogWrite(LPWM, 192); // 75% duty cycle
  delay(2000);            // Run for 2 seconds
}

1. Motor Does Not Rotate:

   • Ensure the power supply is connected and within the specified voltage range.
   • Verify that the R_EN and L_EN pins are set high.
   • Check the PWM signal connections and ensure the duty cycle is not zero.

2. Overheating:

   • Use a heatsink or active cooling if the module operates at high currents.
   • Ensure the motor is not drawing more than 43A continuously.

3. Erratic Motor Behavior:

   • Check for loose connections or poor solder joints.
   • Ensure the motor power supply is stable and adequately filtered.

4. No Current Feedback:

   • Verify the connection to the IS pin.
   • Ensure the motor is drawing current; the feedback signal will be proportional to the load.

Q: Can the BTS7960 drive stepper motors?
A: No, the BTS7960 is designed for DC motors and other inductive loads. Stepper motors require specialized drivers.

Q: What is the maximum PWM frequency supported?
A: The BTS7960 supports PWM frequencies up to 25kHz.

Q: Can I use a 3.3V microcontroller with the BTS7960?
A: Yes, the logic input pins are compatible with both 3.3V and 5V signals.

Q: Is reverse polarity protection included?
A: No, the BTS7960 does not have built-in reverse polarity protection. Ensure correct polarity when connecting the power supply.