Dual BTS7960 H-Bridge DC Motor Driver max. 43A

Dual BTS7960 H-Bridge DC Motor Driver max. 43A is a space-saving, high-power PWM controller for one DC motor.

Input/Drive Voltage: 6-27V
Continuous Current: 43A (max.)
Drive Power: 3100W (max.)
Logic Supply Voltage (VCC): 5V
Logic Input Level: 2-5V (high), <2V (low)

The BTS7960 motor driver will control one motor. It requires a drive power supply of 6-27V DC, a logic supply voltage of +5V, and one or two logic level PWM inputs to control rotational speed and direction.

The BTS7960 can operate in three different way, depending on wiring and controls:

1. Fixed Speed Operation
This will allow the motor to operate full speed forward or reverse.
• Connect terminal 1 to Ground and terminal 2 to Positive of a 6-27 V power supply
• Connect terminals 3 and 4 to motor positive and negative, respectively
• Connect logic pin A to ground and pins B, E and F to a +5V power supply
• For forward rotation, connect pin H to +5V power supply. For reverse rotation, connect pin G to +5V power supply. This will operate the motor at full speed either forward or reverse.

2. Variable Speed Operation
(Speed proportional to PWM on PIN H/PIN G. Better for slower speeds but requires two PWM signals, one for Forward and the other for Reverse)
• Connect terminal 1 to Ground and terminal 2 to Positive of a 6-27 V power supply
• Connect terminals 3 and 4 to motor positive and negative, respectively
• Connect logic pin A to ground and pin B +5V power supply
• Connect remaining pins as shown in tables below

At 12V input, motor operates between roughly 15% to 100% duty cycle, 30% to 100% duty cycle under significant load

3. Variable Speed Operation
(Speed proportional to PWM on PINS E + F. Use one PWM signal and send to both E and F. Requires only one PWM signal however there is significant power loss and shorter motor RPM range)

At 12V input, motor operates between roughly 55% to 95% duty cycle, 65% to 95% duty cycle under significant load

Troubleshooting

Motor not turning at low speeds or low Duty Cycle:
If you are currently controlling the motor using Method 3 above, try using Method 2. Method 2 allows for a lower Duty Cycle before the motor cuts off. If using Method 2 is not possible, try decreasing the voltage supplied to the board so the motor receives a lower voltage at a higher duty cycle.

Motor not receiving power:
For the motor to receive any power from the motor driver, both the Forward and Reverse Enable pins (pins E and F) must be high (>2V) regardless of whether the motor will spin forward or reverse. If both are high and the motor is still not receiving power, check to make sure +5V is being supplied externally to pin B to power the motor driver board.