兰博

Motor module

Overview

L298N
L298N就是L298的立式封装，源自意法半导体集团旗下品牌产品，是一款可接受高电压、大电流双路全桥式电机驱动芯片，工作电压可达46V，输出电流最高可至4A，采用Multiwatt 15脚封装，接受标准TTL逻辑电平信号，具有两个使能控制端，在不受输入信号影响的情况下通过板载跳帽插拔的方式，动态调整电路运作方式，有一个逻辑电源输入端，通过内置的稳压芯片78MO5，使内部逻辑电路部分在低电压下工作，也可以对外输出逻辑电压5V，为了避免稳压芯片损坏，当使用大于12V驱动电压时，务必使用外置的5V接口独立供电。

L298N的控制
L298N通过控制主控芯片上的I/O输入端，直接通过电源来调节输出电压，即可实现电机的正转、反转、停止，由于电路简单，使用方便，通常情况下L298N可直接驱动继电器（四路）、螺线管、电磁阀、直流电机（两台）以及步进电机（一台两相或四相）。

L298N的特点
1、发热量低
2、抗干扰能力强
3、驱动能力强（高电压、大电流）
4、可靠性高（使用大容量滤波电容，续流保护二极管可过热自断和反馈检测）
5、工作电压高（最高可至46V）
6、输出电流大（瞬间峰值电流可达3A，持续工作电流为2A）
7、额定功率25W（电压 X 电流）

TLP281-4光电耦合器
TLP281-4光电耦合器将低压设备与高压电路隔离，它消耗功率少，结构紧凑，成本低，噪音小，无触点反弹，无电弧干扰。它不仅工作速度快而且还能够避免电压浪涌，它在较低频率下提供了非常好的响应。由于接通和关断时间短，它具有很高的开关频率。

Design Files

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Update:2025-05-08 21:16:44

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