Introduction to L298N Motor Driver

Hello, readers welcome to new post. Today we will discuss Introduction to L298N Motor Driver. The motor driver is circuitry that is used to control the DC motor This motor driver circuit gets the low input volts from the controller and other embedded devices like Arduino. By using these volts motor driver control the direction of the dc motor.

There are different types of motor controllers used. In this post, we will discuss the L298N Motor Driver. So let’s get started L298N Motor Driver

Table of Contents

The L298N motor driver is the high-power motor driver used to operate dc motors and stepper motors.
This driver consists of an LM298 driver with a 78M05 five volts voltage regulator.

This driver has the ability to control the speed and direction of two dc motors and four for other purposes.
It is a fine option for robotic projects and is used for the connection of microcontrollers that need a couple of control lines in one motor.
This motor driver can be configured with manual switches, TTL logic gates, relays, etc. This driver consists of LED indicators, with regulator and diodes for the protection of circuitry

L298N Motor Driver Features

The main features are discussed here
Its input voltage value is 3.2 volts to 40VDc
It is L298N Dual H Bridge DC Motor Driver board
Its hugest current is two Amperes
DC volts from the power supply are five to thirty-five volts
The operating current is zero to thirty-six milliamperes
It has power on LED indicator on board
It comes with a heatsink to minimize the heat losses
The logic voltage for this device is five volts

The highest power is twenty-five watts
Storage temperature is -25 ℃ to +130 ℃.
Board dimensions are 3.4cm x 4.3cm x 2.7cm

L298N Module Pinout

The main pinout of L298N is explained here
IN1, IN2: these pins are input pins of motor A control the direction of this motor
In3, IN4: Used for motor B direction control and its inputs
ENA: Enable pin pulse width modulation for Motor A
ENB: enable pin for motor B
Out1, Out2: used for output of motor A
Out3. out4: o/p pins of motor B
12V: It is 12 volts input pin that connected to DC supply
5V: It power to switch circuits
GND: Ground pinout

L298N Motor Driver Working

L298N Motor Driver work in H-bridge circuits which is a common technique used for speed control of dc motor.
L298N has a dual H bridge configuration that is created and get the signal from TTL logic. These circuits can also be used to operate different types of inductive loads like motors, relays, etc
The circuit configuration of the H-bridge can be seen here

Here you can see the H bridge operation

In the above diagram, you can see that Switches S1 and S4 are in a close state, and S2 and S3 are in an open state, so in the left circuit, the motor has positive terminals and it will rotate in a clockwise direction
If S2 and S3 are in a close state and S1 and S4 are in an open state right motor has a positive terminal so the motor rotates in an anticlockwise direction