TPS40200-EP中文资料(17)
发布时间:2021-06-05
发布时间:2021-06-05
元器件交易网
SGLS371–JANUARY2007
EXAMPLEAPPLICATIONS
Application1:BuckRegulator,8-Vto12-VInput,3.3Vor5Vat2.5-AOutput
Overview
ThebuckregulatordesignshowninFigure31illustratestheuseoftheTPS40200.Itdelivers2.5Aateither3.3Vor5Vasselectedbyasingleresistor.Itachievesapproximately90%efficiencyat3.3Vand94%at5V.AdiscussionofdesigntradeoffsandmethodologyisincludedtoserveasaguidetothesuccessfuldesignofforwardconvertersusingtheTPS40200.
TheBillofMaterials(BOM)forthisapplicationisgiveninTable2TheefficiencyandloadregulationfromboardsbuiltfromthisdesignareshowninFigure32andFigure33Gerberfilesandadditionalapplicationinformationareavailablefromthefactory.
Figure31.8-Vto16-VVINStep-DownBuckConverter
100
100
90
90
Efficiency - %
70
Efficiency - %
80
80
70
60
60
3
50
0.5
1
1.52
Load Current -A
2.5
3
50
0.5
1
1.52
Load Current -A
2.5
Figure32.Full-LoadEfficiencyat5-VVOUTFigure33.Full-LoadEfficiencyat3.3-VVOUT
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