Product Brief Introduction

Using L298N as the main driver chip, it has the characteristics of strong driving capability, low heat generation, and strong anti-interference ability

The output current is large, with an instantaneous peak current of up to 3A and a continuous operating current of 2A

Rated power 25W

A high voltage and high current full bridge driver containing two H-bridges can be used to drive inductive loads such as DC motors, stepper motors, relay coils, etc.

Using standard logic level signal control: It has two enable control terminals that allow or prohibit device operation without being affected by input signals. There is also a logic power input terminal that allows the internal logic circuit to operate at low voltage.

An external detection resistor can be connected to provide feedback on the change to the control circuit.

It can drive one two-phase stepper motor or four phase stepper motor, or drive two DC motors.

The module can be powered by the built-in 78M05 through the driver power supply, but to avoid damage to the voltage regulator chip, an external 5V logic power supply can be used.

The module uses large capacity filtering capacitors and freewheeling protection diodes to improve reliability

Product Parameters

Driver chip: L298N dual H-bridge suitable current motor driver chip.

The power supply range of the drive terminal Vs: ·+ 5V~+ 35V·; If power needs to be taken from the board, the power supply range Vs: ·+ 7V~+33V

Peak current of the driving part 10:· 2A

Logic section terminal power supply range Vs: ·+ 5V~+· 7V · (can be powered on board+· 5V).

Logic section operating current range: 0~36mA

Control signal input voltage range:,

Low level: 0.3V~1.5V

High level: 2.3V~Vss

Enable signal input voltage range

Low level: 0.3~. 5V (Control signal invalid)

High level: 2.3V~Vss (control signal valid)

Product Use

1. The module can be equipped with one stepper motor or two DC motors;

2. Selection of Logic Voltage Supply Method: If the button is not pressed, the logic will receive 5V power from the internal source. If the button is pressed, 5V voltage will be provided from the external source;

Instructions:

Drive of DC motor: This drive board can drive 2 DC motors, and the enable terminals ENA and ENB are effective when they are at high level. The control mode and DC motor status table are as follows:

To perform PWM speed regulation on a DC motor, it is necessary to set IN1 and IN2, determine the direction of rotation of the motor, and then output PWM pulses to the enable terminal to achieve speed regulation. Note that when the enable signal is 0, the motor is in a free stop state: when the enable signal is 1 and INI and IN2 are 00 or 11, the motor is in a braking state, preventing the motor from rotating.

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