Arduino 和 TB6612FNG 驱动直流电机

TB6612FNG 电机驱动模块

该模块相对于传统的L298N效率上提高很多,体积上也大幅度减少，在额定范围内，芯片基本不发热。

TB6612FNG每通道输出最高1.2 A的连续驱动电流，启动峰值电流达2A/3.2 A(连续脉冲/单脉冲);

4种电机控制模式：正转/反转/制动/停止;

PWM支持频率高达100 kHz;

待机状态;

片内低压检测电路与热停机保护电路;

工作温度：-20～85℃;

SSOP24小型贴片封装。

引脚说明

A控制信号输入------PWMA VM ------电机驱动电压输入端（4.5V-15V）

A电机输入端2 ------AIN2 VCC ------逻辑电平输入端（2.7V-5.5V）

A电机输入端1 ------AIN1 GND ------ 接地

正常工作/待机状态控制端------STBY AO1 ------- A电机输出端1

B电机输入端1------BIN1 AO2 ------ A电机输出端2

B电机输入端2------BIN2 BO2 ------ B电机输出端2

B控制信号输入端------PWMB BO1 ------ B电机输出端1

接地------GND GND ------- 接地

接线方式

程序实现

程序打包下载：

//motor A connected between A01 and A02
//motor B connected between B01 and B02

int STBY = 10; //standby

//Motor A
int PWMA = 3; //Speed control 
int AIN1 = 9; //Direction
int AIN2 = 8; //Direction

//Motor B
int PWMB = 5; //Speed control
int BIN1 = 11; //Direction
int BIN2 = 12; //Direction

void setup(){
  pinMode(STBY, OUTPUT);

  pinMode(PWMA, OUTPUT);
  pinMode(AIN1, OUTPUT);
  pinMode(AIN2, OUTPUT);

  pinMode(PWMB, OUTPUT);
  pinMode(BIN1, OUTPUT);
  pinMode(BIN2, OUTPUT);
}

void loop(){
  move(1, 255, 1); //motor 1, full speed, left
  move(2, 255, 1); //motor 2, full speed, left

  delay(1000); //go for 1 second
  stop(); //stop
  delay(250); //hold for 250ms until move again

  move(1, 128, 0); //motor 1, half speed, right
  move(2, 128, 0); //motor 2, half speed, right

  delay(1000);
  stop();
  delay(250);
}


void move(int motor, int speed, int direction){
//Move specific motor at speed and direction
//motor: 0 for B 1 for A
//speed: 0 is off, and 255 is full speed
//direction: 0 clockwise, 1 counter-clockwise

  digitalWrite(STBY, HIGH); //disable standby

  boolean inPin1 = LOW;
  boolean inPin2 = HIGH;

  if(direction == 1){
    inPin1 = HIGH;
    inPin2 = LOW;
  }

  if(motor == 1){
    digitalWrite(AIN1, inPin1);
    digitalWrite(AIN2, inPin2);
    analogWrite(PWMA, speed);
  }else{
    digitalWrite(BIN1, inPin1);
    digitalWrite(BIN2, inPin2);
    analogWrite(PWMB, speed);
  }
}

void stop(){
//enable standby  
  digitalWrite(STBY, LOW); 
}

实例效果

通电，并测量马达A与B的输出电压，基本相同，电压差在正负0.03V，输出稳定。

想必能完美解决L9110S 和 L298N两路电机输出电压误差大导致的走不到直线。