BTN7971B dual-channel motor driver module

### Introduction to BTN7971B chip (from chatgpt)
BTN7971B is a power integrated circuit chip specifically for motor drive. It is designed and produced by Infineon Technologies and is widely used in motor control systems in the automotive and industrial fields.

The BTN7971B chip has the following main features and functions:

1. Dual-channel drive: BTN7971B has two independent motor drive channels and can drive two motors or actuators at the same time. This makes it very suitable for dual-motor applications, such as dual-motor fan control in automobiles.

2. High power output: Each channel of the BTN7971B is able to provide up to 40 amperes of peak output current, which is enough to drive most motors and loads. It also has internal over-temperature protection and over-current protection functions to protect the chip and system from damage due to overheating and overload.

3. Low on-resistance: The output stage of the BTN7971B chip uses a low on-resistance power MOSFET switch to ensure that it can provide minimal power loss and heat generation when driving the motor. This helps to improve system efficiency and reduce energy consumption.

4. Multiple protection functions: The BTN7971B chip has built-in multiple protection functions, including over-temperature protection, over-current protection, under-voltage lockout, over-voltage lockout, etc. These protection functions protect the motor drive system from damage caused by faults and abnormal conditions.

5. Simplified system design: The BTN7971B chip is designed with ease of use and integration in mind. It provides a variety of interface options, including PWM control interface and level input control interface, which is convenient for connection with a microcontroller or other controller. In addition, it also provides output signals for current feedback and fault diagnosis.

6. The BTN7971B chip is widely used in the automotive industry in systems such as electric fans, electric pumps, electric seats, and electric window lifts. Its high power output, protection functions, and simplified system design make it one of the ideal choices in motor drive applications.
#### ESP32 test program```c
#include


const int AIN1 = 16;
const int AIN2 = 17;
const int BIN1 = 18;
const int BIN2 = 19;

void motorA()
{
analogWrite(AIN1, 255);
analogWrite(AIN2, 0);
}
void motorB()
{
analogWrite(BIN1, 0);
analogW rite(BIN2, 255);
}

void setup()
{
}

void loop()
{
motorA();
motorB();
}
```