Texas Instruments TPS40090EVM-002 manual Internal 2 Power Plane

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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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Contents User’s Guide EVM Important Notice Dynamic Warnings and Restrictions Introduction Features SchematicTransen Component Selection Frequency of OperationInductance Value Input Capacitor SelectionOutput Ripple Cancellation and Capacitor Selection PH, D + if N PH v 1, DI OUTD, DI OUT N PH, DVout Iripple + LMosfet Selection Current SensingOvercurrent Limit Protection OUTCompensation Components R11Test Setup Connections for the TestTest Results and Performance Data Efficiency and Power LossTotal Power Loss Output Current Overall Efficiency Output CurrentClosed-Loop Performance Gain and Phase Oscillator FrequencyOutput Ripple and Noise Transient Response Transient ResponseStart up with Pre-Biased Output J11 Short CircuitLayout Considerations EVM Assembly Drawing and PCB Layout Top Side Component AssemblyTop Side Copper Internal 2 Power Plane Bottom Layer Copper List of Materials QTYLoad Transient Circuit Important Notice Products Applications