L298N Motor Driver Module Dual H-Bridge DC Motor Driver 2A High Current PWM Speed Control for Smart Car/Robot L298N Motor Driver Module Dual H-Bridge 2A PWM for Arduino Smart Car

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L298N Motor Driver Module Dual H-Bridge DC Motor Driver 2A High Current PWM Speed Control for Smart Car/Robot

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L298N Motor Driver Module Product Overview
The L298N motor driver board is a cost‑effective dual‑channel motor driver module built on L298N chip. It can drive two DC motors or one 4‑phase stepper motor simultaneously for single‑chip microcomputer systems. Equipped with power filter circuit and heat sink, it delivers relatively large output current to realize forward, reverse, speed adjustment and stop functions. It is a popular hardware component for smart car and robot projects.

L298N Motor Driver Module Key Features

The L298N motor driver module adopts a dual H-bridge architecture for independent control of two DC motors with forward, reverse, brake, and stop functions, or to drive one stepper motor. It supports a wide motor voltage range of 5V to 24V (recommended) / 35V (maximum), compatible with 6V, 9V, 12V, and 24V motors. Each H-bridge delivers up to 2A continuous output current and 3A peak current. The module supports PWM speed control via the ENA/ENB enable pins. The onboard 78M05 regulator provides 5V logic supply when the motor voltage is ≤12V; for motor voltages above 12V, an external 5V logic supply is required. The module features large filter capacitors and high-speed Schottky diodes for back-EMF protection. Operating temperature ranges from -25℃ to +130℃. The module includes a power indicator LED and motor status LEDs (red for forward, green for reverse).

L298N Motor Driver Module Application
Smart car, robot project, robotic arm, model car, DIY maker project, teaching experimental kit, small automatic equipment, toy modification, stepper motor test bench.

L298N Motor Driver Module Advantages

The L298N motor driver module features the original STMicroelectronics L298N chip as its core, offering strong driving capability, low heat generation, and excellent anti-interference performance. With a 5V to 35V wide input voltage range, it is compatible with 6V, 9V, 12V, and 24V motors. Each H-bridge delivers 2A continuous current and 3A peak current, sufficient for most DIY DC motor projects. PWM speed control via ENA/ENB pins enables precise speed regulation. The onboard 78M05 regulator simplifies power design. The module is equipped with large filter capacitors and high-speed Schottky diode protection for back-EMF suppression.

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L298N Motor Driver Module Dual H-Bridge DC Motor Driver 2A High Current PWM Speed Control for Smart Car/Robot L298N Motor Driver Module Dual H-Bridge 2A PWM for Arduino Smart Car

FAQs:

Question: What is the basic working principle of the L298N motor driver module?
Answer: Its core is the L298N chip which contains two H-bridge circuits. By combining the conduction states of the switches within the H-bridge, it can change the current direction through the motor to control forward, reverse, stop, and braking operations.
Question: What types of motors can this module drive?
Answer: It can drive two DC motors simultaneously, or one two-phase four-wire stepper motor. It is also suitable for driving inductive loads such as relay coils.
Question: What is the supply voltage range?
Answer: The motor driving voltage (VS) is 5V to 35V, with 24V recommended as a safe limit. The logic voltage (VSS) is typically 5V.
Question: How to use the onboard 5V logic power jumper?
Answer: When the motor voltage is between 7V and 12V, retain the jumper to use the onboard 78M05 regulator. When exceeding 12V, you must remove the jumper and supply an external stable 5V to the +5V pin.
Question: What is the logic level for the control signals (IN1-IN4)?
Answer: The input voltage range is 1.8V to 7V, which is TTL compatible. Thus, common 3.3V or 5V MCU GPIO pins can connect directly.
Question: How to adjust motor speed via PWM?
Answer: Disconnect the enable jumpers (ENA, ENB) and input PWM signals there, while using IN pins for direction. A larger PWM duty cycle leads to higher motor speed.
Question: What is the truth table for DC motor rotation?
Answer: For MOTOR-A (IN1, IN2), forward is 1/0, reverse is 0/1, standby is 0/0, and brake is 1/1. It follows the same logic for MOTOR-B (IN3, IN4).
Question: Why does the module get hot?
Answer: The L298N chip has high internal on-resistance. Power dissipation is substantial near maximum load. Ensure heatsinks are firmly attached or add fan cooling when the current approaches 2A.
Question: What are the main applications?
Answer: It is widely used in robot chassis, smart car kits, and motor control in automation due to its strong drive capability and easy wiring.
Question: What are the key wiring warnings?
Answer: The GND of the logic power must be common with the module GND to establish a signal reference. Also, never reverse the positive and negative motor supply terminals.