Microchip MEC1428 Handleiding
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2017 Microchip Technology Inc.DS00002137B-page 1
INTRODUCTION
Pulse Width Modulation (PWM) modules, which produce basically digital waveforms, can be used in many applications
as a more efficient and lower power alternative to the traditional 8 bit Digital-to-Analog (D/A) converters using only two
inexpensive filter components. A wide variety of microcontroller applications that exist today are better served by utiliz-
ing a PWM generated analog output as opposed to an 8 bit D/A converter. One application where using a high resolution
PWM has value vs. a traditional 8 Bit DAC is in driving the 3-wire voltage controlled fan in a PC.
Audience
This document is written for a reader that is familiar with hardware design. The goal of this application note is to provide
information regarding how to use a PWM to drive 3-wire fans that provides system benefits and an enhanced customer
experience.
References
The following documents should be referenced when using this application note. Please contact your Microchip repre-
sentative for availability.
•Microchip MEC140x/MEC141x/MEC142x Data Sheet
•Microchip MEC140x/MEC141x/MEC142x EVBs
AN2137
PWM Controlled Fan for MEC140x/MEC141x/MEC142x
Author:Tom Tse / Greg VanWesten
Microchip Technology Inc.
Product specificaties
| Merk: | Microchip |
| Categorie: | Niet gecategoriseerd |
| Model: | MEC1428 |
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