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Basic 2A boost converter
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README.md

Arduino-Boost-Converter

Basic 2A, 10W DC-DC boost converter using the Arduino platform.

Please follow the complete guide here for much more information:

http://mcuhq.com/29/arduino-dc-dc-boost-converter-design-circuit-with-control-loop

Introduction

This circuit can safely boost a lower voltage input to a higher output voltage. The arduino is used as a controller to regulate the output to a desired setpoint. The limits of operation are as follows:

  • Max input voltage: 100V
  • Max input current: 2A

I only tested this circuit up to 15W output.

An isolated supply with current limiting capability is encouraged for resting. A simply DC power brick with an in-line fuse will also suffice for safety.

High efficiencies are attainable at lower voltage deltas.

Required Tools

These are the parts I used, however please note that digikey stock fluctuates over the years and so the exact model shown does not need to be used.

RefDes Digkey Description
L1 811-1335-ND IND 330UH 2.8A 150 MOHM
Q1 IRLI640GPBF-ND MOSFET N-CH 200V 9.9A TO220FP
D1 497-3216-1-ND DIODE SCHOTTKY 150V 3A
C1 493-1164-ND CAP ALUM 47UF 20% 160V RADIAL
R1 150W-5-ND RES 150 OHM 5W 5% AXIAL

You will also need an Arduino Uno board, its IDE, and a voltmeter to verify the voltage.

Setup

  1. Construct the circuit
  2. Connect the Arudino with a USB to a computer. Program the Arduino with the default settings.
  3. Run the COM port debugger through the Arduino IDE to see the debug data.
  4. Place a voltmeter or oscope onto the ADC feedback pin, input pin, and output pin.
  5. Adjust the PID constans as outline in the article until a stable output is achieved (easier said than done!).

Issues

Please submit all issues to the github tracker. Pull requests are also encouraged. General comments can be left at mcuhq.com

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