Texas Instruments TPS40090EVM-002 manual EVM Assembly Drawing and PCB Layout

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SLUU195 − June 2004

8 EVM Assembly Drawing and PCB Layout

Figure 15. Top Side Component Assembly

Figure 16. Bottom Assembly

20TPS40090 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 TestEfficiency and Power Loss Total Power Loss Output CurrentTest Results and Performance Data Overall Efficiency Output CurrentOutput Ripple and Noise Gain and Phase Oscillator FrequencyClosed-Loop Performance 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