分立元件數(shù)字功放設(shè)計(jì)

1、UM10155DiscreteClassDHighPowerAudioAmplifierUM10155：分立元件：分立元件D類大功率音頻功放類大功率音頻功放Keywds：ClassDAudioAmplifierUniversalClassDUcDPWMAudioAmplifierHighPowerAudio.關(guān)鍵詞：D類音頻放大器，全D類（UcD）PWM功放，大功率功放Abstract：Thisusermanualdescribesth

2、eoperatinginstructionsthemostimptantbackgroundinfmationofthePhilipsSemiconductDiscreteClassDHighPowerAudioAmplifierDemonstratBoard.WithproperheatsinkingofthePowerMOSFETsawelldimensionedpowersupplythePWMamplifieriscapable

3、ofsupplying200Wofhighqualityaudiopowerintoa4?loudspeaker.內(nèi)容摘要：本用戶手冊(cè)描述了飛利浦半導(dǎo)體分立D類高功率音頻放大器演示板的操作方法和最重要的背景資料。在適當(dāng)?shù)墓β使苌崞鞯暮秃芎玫墓╇娗闆r下，這臺(tái)PWM放大器能提供200W高質(zhì)量音頻輸出給一個(gè)4?的揚(yáng)聲器。1.Introduction簡(jiǎn)介T(mén)heUniversalClassD(UcD)version1.00demonstratb

4、oardimplementsa200WtrueRMS(intoa4?load)highqualityaudiopoweramplifieronaverycompactprintedcircuitboard.TheamplifierisbuiltupofdiscretecomponentsonlymakesuseofPhilipspatentWO03090343.這個(gè)1.0版本的全D類功放(UcD)示范板是一個(gè)在非常緊湊的PCB板上輸出2

5、00W真有效功率(4?負(fù)載)的高質(zhì)量音頻功放。Fig1.Generalview001aaf1482.Circuitdiagram電路原理圖ThedemonstratboardisintendedtoillustratethecapabilityofPhilipsPowerMOSFETsindiscretehighendPWMaudioamplifierapplications.Theboardisselfcontainedonlyreq

6、uiresasimple(nonstabilized)dualpowersupplyanaudiosource(e.g.functiongeneratCDplayer)aloudspeakertodemonstrateitscapabilities.FevaluationathighoutputpoweraprovisionismadetoattachanappropriateheatsinktotheMOSFETsontheboard

7、.本演示板意欲圖解說(shuō)明飛利浦功率MOSFET在分立高檔PWM音頻放大器上的應(yīng)用能力。本板自我包含了齊全的功能，只需要簡(jiǎn)單的正負(fù)電源（非穩(wěn)壓），加上音源和揚(yáng)聲器即可示范其性能。為評(píng)價(jià)在大功率下的性能，需要附上一個(gè)適當(dāng)?shù)纳崞組OSFET上。001aaf150001aaf151Fig3.TopcopperlayoutFig4.Bottomcopperlayout001aaf152001aaf153Fig5.ComponentlayoutF