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Texas Instruments TPS40090EVM-002 manual Internal 2 Power Plane . Internal, SLUU195 − June

Models: TPS40090EVM-002

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Figure 19. Internal 2 (Power Plane)

SLUU195 − June 2004

Figure 19. Internal 2 (Power Plane)

Figure 20. Internal 3

22TPS40090 Multi-Phase Buck Converter and TPS2834 Drivers Steps-Down from 12-V to 1.5-V at 100 A

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Texas Instruments TPS40090EVM-002 manual Internal 2 Power Plane . Internal, SLUU195 − June

Contents

User’s Guide Using the TPS40090EVM-002User’s Guide EVM IMPORTANT NOTICE DYNAMIC WARNINGS AND RESTRICTIONS 5 Test Setup 6 Test Results/Performance Data 7 Layout Considerations Systems PowerContents 1 Introduction 2 Features 3 Schematic 4 Component Selection 8 EVM Assembly Drawing and PCB Layout 9 List of MaterialsTable 1. TPS40090EVM−002 Performance Summary FeaturesSchematic SLUU195 − JuneSLUU195 − June TRANSEN4 Component Selection 4.1 Frequency of Operation4.3 Input Capacitor Selection 4.2 Inductance ValueIOUT 4.4 Output Ripple Cancellation and Capacitor Selection k N PH, D + if N PH v 1, DI OUTD, DI OUT N PH, DFigure 5. Output Ripple Current Cancellation K N PH, D +4.6 Current Sensing 4.5 MOSFET Selection0.6mH 4.7 Overcurrent Limit Protection + 354 kHz 4.8 Compensation Components2p R11 C11 5 Test Setup Figure 7. Connections for the Test6.1 Efficiency and Power Loss 6 Test Results and Performance DataFigure 10. Bode Plot 6.2 Closed-Loop Performance6.3 Output Ripple and Noise Figure 11. Output Noise6.4 Transient Response Figure 12. Transient ResponseFigure 13. J11 Short Circuit 6.5 Start up with Pre-Biased OutputFigure 14. J11 Open Circuit 7 Layout Considerations Figure 15. Top Side Component Assembly Figure 16. Bottom Assembly 8 EVM Assembly Drawing and PCB LayoutSLUU195 − June Figure 17. Top Side Copper Figure 18. Internal 1 Ground Plane SLUU195 − JuneFigure 19. Internal 2 Power Plane Figure 20. Internal SLUU195 − JuneFigure 21. Internal Figure 22. Bottom Layer Copper SLUU195 − JuneTable 2. List of Materials 9 List of MaterialsSLUU195 − June Description SLUU195 − JuneReference SizeProducts IMPORTANT NOTICEApplications