Смотрите на YouTube

15A 400W MOSFET AOD4184A to Control Motor or Load

This project demonstrates how to use a 15A, 400W MOSFET module (based on the AOD4184A MOSFET) to control various loads, such as motors and lights. This is a valuable skill for numerous applications, allowing precise control over power delivery. The MOSFET's high current capacity makes it suitable for a wide range of projects.

Practical Applications:

• Controlling the speed of DC motors in robotics or automation projects.
• Creating dimming circuits for LED lighting.
• Building a high-power switching circuit for appliances.
• Designing a motor controller for a small vehicle.

Hardware/Components

The core component is a 15A, 400W MOSFET module featuring two AOD4184A MOSFETs in parallel (in video at 00:05). You will also need an Arduino board, a power supply, connecting wires, and the load you wish to control (motor, lights, etc.). A heat sink is highly recommended for higher current applications (in video at 03:40).

Wiring Guide

The module has clearly marked terminals: input (V_in), output, and ground (in video at 01:42). Connect the positive side of your power supply to the V_in, and the negative to the ground. Your load connects to the output terminals. The Arduino controls the MOSFET module's gate using a digital pin (in video at 08:26).

Code Explanation

The Arduino code uses Pulse Width Modulation (PWM) to control the MOSFET. The configurable parameters are:

• motorPin: Specifies the Arduino pin connected to the MOSFET module's gate (default: pin 9). (in video at 05:47)
• mSpeed: An integer variable controlling the motor speed (0-255). (in video at 05:47)
• mStep: Determines the increment/decrement step for mSpeed (default: 15). Adjust this to fine-tune speed control (in video at 05:54).

int motorPin =9; // pin to connect to motor module
int mSpeed = 0; // variable to hold speed value
int mStep = 15; // increment/decrement step for PWM motor speed

The code includes logic to prevent mSpeed from exceeding the 0-255 range (in video at 07:26). For testing higher currents (5A, 10A, 15A, 20A), a simplified version of the code keeps the output pin HIGH to maintain a constant on state (in video at 13:43).

void loop() {
  digitalWrite(loadPin, HIGH);
  while(1); // wait forever
}

Live Project/Demonstration

The video demonstrates controlling a 51W light bulb (in video at 10:40) and a DC motor (in video at 11:18) using PWM. The project also includes tests with an electronic load at 5A, 10A, 15A, and 20A (in video at 13:10), showcasing the module's high current handling capabilities. Measurements of the voltage drop across the MOSFET at various currents are also shown (in video at 16:06), validating the low on-resistance of the AOD4184A.

Chapters

• [00:00] Introduction and Project Overview
• [01:40] Hardware Overview and Module Details
• [05:01] MOSFET Datasheet Explanation
• [05:47] Code Explanation
• [08:26] Wiring Explanation
• [10:40] Demonstration with 51W Light
• [11:18] Demonstration with DC Motor
• [12:58] High-Current Testing (5A, 10A, 15A, 20A)
• [16:06] Voltage Drop Measurement

Изображения

15A 400W МОП-транзистор AOD4184A для управления двигателем или нагрузкой

15A 400W MOSFET AOD4184A для управления двигателем или нагрузкой

mosfet_AOD4184A_module_wiring

AOD4184A-_mosfet_module-main

AOD4184A-_mosfet_module-main-15A

AOD4184A_pinout

15A 400W МОП-транзистор AOD4184A для управления двигателем или нагрузкой

15A 400W MOSFET AOD4184A для управления двигателем или нагрузкой

mosfet_AOD4184A_module_wiring

AOD4184A-_mosfet_module-main

AOD4184A-_mosfet_module-main-15A

AOD4184A_pinout

/*
 * This is an Arduino sketch for a tutorial video 
 * explaining why a resistor is needed when using a push button
 * with an Arduino to connect the pin to Ground (GND)
 * 
 * Written by Ahmad Shamshiri on July 18, 2018 at 17:36 in Ajax, Ontario, Canada
 * For Robojax.com
 * Watch the instructional video for this code: https://youtu.be/tCJ2Q-CT6Q8
 * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.
 */
int motorPin =9;// pin to connect to motor module
int mSpeed = 0;// variable to hold speed value
int mStep = 15;// increment/decrement step for PWM motor speed
  
void setup() {
  // Robojax.com demo
  pinMode(motorPin,OUTPUT);// set mtorPin as output
  Serial.begin(9600);// initialize serial motor
  Serial.println("Robojax Demo");
  

}

void loop() {
  // Robojax.com tutorial

analogWrite(motorPin, mSpeed);// send mSpeed value to motor
    Serial.print("Speed: ");
    Serial.println(mSpeed);// print mSpeed value on Serial monitor (click on Tools->Serial Monitor)
  mSpeed = mSpeed + mStep;
  // See the video for details.
  if (mSpeed <= 0 || mSpeed >= 255) {
    mStep = -mStep;
  }  
  
delay(200);

}

/*
 * This is an Arduino Sketch for a tutorial video 
 * explaining the 15A MOSFET AOD4184A used as a switch 
 * This sketch is used to test the MOSFET with a load at 5A, 10A, 15A, 25A
 * 
 * Written by Ahmad Shamshiri on July 21, 2018 in Ajax, Ontario, Canada
 * For Robojax.com
 * Watch the instruction video for this code: https://youtu.be/tCJ2Q-CT6Q8 
 * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.
 */
int loadPin =9;// load pin

  
void setup() {
  // Robojax.com demo
  pinMode(loadPin,OUTPUT);
  Serial.begin(9600);
  Serial.println("Robojax Demo"); 

}

void loop() {
  // Robojax.com tutorial

  digitalWrite(loadPin, HIGH);
 while(1);// wait forever


}