简介

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

引脚	定义
VM	驱动电压输入端（3-12V）
VCC	逻辑电平输入端（2.7-5.5）
GND	电源地端
STBY	正常工作/待机状态控制输入端
PWMA	PWM信号输入端
AIN1、AIN2	电机A控制模式输入端
A01、A02	电机A驱动输入端
PWMB	PWM信号输入端
BIN1、BIN2	电机B控制模式输入端
B01、B02	电机B驱动输出端

Arduino接线

示例代码

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

/*
 * 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
 */
void move(int motor, int speed, int direction){
   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(){
   digitalWrite(STBY, LOW); 
}

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);
}