Manuals / Texas Instruments / Computer Equipment / Power Supply

Texas Instruments TPS40090EVM-002 manual Internal . Bottom Layer Copper, SLUU195 − June

Models: TPS40090EVM-002

1 26

Download 26 pages 13.11 Kb

Page 23

Image 23

SLUU195 − June 2004

Figure 21. Internal 4

Figure 22. Bottom Layer Copper

TPS40090 Multi-Phase Buck Converter and TPS2834 Drivers Steps-Down from 12-V to 1.5-V at 100 A

Page 23

Image 23

Texas Instruments TPS40090EVM-002 manual Internal . Bottom Layer Copper, SLUU195 − June

Contents

User’s Guide Using the TPS40090EVM-002User’s Guide EVM IMPORTANT NOTICE DYNAMIC WARNINGS AND RESTRICTIONS 8 EVM Assembly Drawing and PCB Layout 9 List of Materials Systems PowerContents 1 Introduction 2 Features 3 Schematic 4 Component Selection 5 Test Setup 6 Test Results/Performance Data 7 Layout ConsiderationsSLUU195 − June FeaturesSchematic Table 1. TPS40090EVM−002 Performance SummaryTRANSEN SLUU195 − June4.1 Frequency of Operation 4 Component SelectionIOUT 4.2 Inductance Value4.3 Input Capacitor Selection k N PH, D + if N PH v 1, DI OUTD, DI OUT N PH, D 4.4 Output Ripple Cancellation and Capacitor SelectionK N PH, D + Figure 5. Output Ripple Current Cancellation0.6mH 4.5 MOSFET Selection4.6 Current Sensing 4.7 Overcurrent Limit Protection 2p R11 C11 4.8 Compensation Components+ 354 kHz Figure 7. Connections for the Test 5 Test Setup6 Test Results and Performance Data 6.1 Efficiency and Power LossFigure 11. Output Noise 6.2 Closed-Loop Performance6.3 Output Ripple and Noise Figure 10. Bode PlotFigure 12. Transient Response 6.4 Transient ResponseFigure 14. J11 Open Circuit 6.5 Start up with Pre-Biased OutputFigure 13. J11 Short Circuit 7 Layout Considerations SLUU195 − June 8 EVM Assembly Drawing and PCB LayoutFigure 15. Top Side Component Assembly Figure 16. Bottom Assembly SLUU195 − June Figure 17. Top Side Copper Figure 18. Internal 1 Ground PlaneSLUU195 − June Figure 19. Internal 2 Power Plane Figure 20. InternalSLUU195 − June Figure 21. Internal Figure 22. Bottom Layer CopperSLUU195 − June 9 List of MaterialsTable 2. List of Materials Size SLUU195 − JuneReference DescriptionApplications IMPORTANT NOTICEProducts