an-1070| Application Note
Application Note AN-1070
Class D Audio Amplifier Performance Relationship to MOSFET Parameters
By Jorge Cerezo, International Rectifier
Table of Contents
Page Abstract ............................................................................................................2 Introduction ......................................................................................................2 Key MOSFET Electrical Parameters in Class D Audio Amplifiers ....................2 Drain Source Breakdown Voltage BVDSS ................................................2 Static Drain-to-Source On Resistance RDS(on).........................................4 Gate Charge Qg ......................................................................................5 Body Diode Reverse Recovery Charge, Qrr ...........................................8 Internal Gate Resistance RG(int)........................................................11 MOSFET Package ..................................................................................11 Maximum Junction Temperature .............................................................12 International Rectifier Digital Audio MOSFET ........
...........................................13 Conclusions.........................................................................................14 References........................................................................................................14 This application note discusses key parameters to be considered in the selection of MOSFETs for class D amplifier and their relationship with amplifier performance such as efficiency, EMI, and THD. In addition, benefits and advantages of IR Digital Audio MOSFETs in class D audio amplifier are presented.
AN-1070
1
an-1070 Application Note irf Download PDF
Add this permalink to your bookmarks for future download of an-1070 ApplicationNote
Permalink: http://application.emcelettronica.com/irf/an-1070
