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智能小車實作

2. TB6612FNG 雙馬達驅動板介紹

Description: The TB6612FNG motor driver can control up to two DC motors at a constant current of 1.2A (3.2A peak). Two input signals (IN1 and IN2) can be used to control the motor in one of four function modes - CW, CCW, short-brake, and stop. The two motor outputs (A and B) can be separately controlled, the speed of each motor is controlled via a PWM input signal with a frequency up to 100kHz. The STBY pin should be pulled high to take the motor out of standby mode.CJMCU.

Logic supply voltage (VCC) can be in the range of 2.7-5.5VDC, while the motor supply (VM) is limited to a maximum voltage of 15VDC. The output current is rated up to 1.2A per channel (or up to 3.2A for a short, single pulse).

和L298N相比，尺寸上只有5分之1的大小，但規格上已足夠大多數智慧車使用。

該模組相對於傳統的L298N效率上提高很多，體積上也大幅度減少，在額定範圍內，晶片基本上不發熱。

TB6612的的用法：

TB6612是雙驅動，也就是可以驅動兩個電機

下面分別是控制兩個電機的IO口

STBY(或NC)口接單片機的IO口清零電機全部停止，置1通過AIN1 AIN2，BIN1，BIN2 來控制正反轉

VM 接12V以內電源

VCC 接5V電源

GND 接電源負極

 

驅動1路

PWMA 接單片機的PWM口

真值表：

AIN1 0 0 1
AIN2 0 1 0
  停止 正轉 反轉

A01、AO2 接電機1的兩個腳

 

驅動2路

PWMB 接單片機的PWM口

真值表：

BIN1 0 0 1
BIN2 0 1 0
  停止 正轉 反轉

B01、BO2 接電機2的兩個腳

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