Texas Instruments TPS54225 User Manual

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User's Guide
TPS54225 Step-Down Converter Evaluation Module User's
Guide
1 Introduction.............................................................................................................................................................................2
1.1 Background........................................................................................................................................................................
1.2 Performance Specification
1.3 Modifications......................................................................................................................................................................
2 Test Setup and Results..........................................................................................................................................................
2.1 Input / Output Connections................................................................................................................................................
2.2 Start-Up Procedure............................................................................................................................................................
2.3 Efficiency............................................................................................................................................................................4
2.4 Load Regulation.................................................................................................................................................................
2.5 Line Regulation..................................................................................................................................................................
2.6 Load Transient Response..................................................................................................................................................
2.7 Output Voltage Ripple........................................................................................................................................................
2.8 Input Voltage Ripple...........................................................................................................................................................
2.9 Start Up..............................................................................................................................................................................
2.10 Switching Frequency........................................................................................................................................................8
3 Board Layout...........................................................................................................................................................................9
3.1 Layout................................................................................................................................................................................
4 Schematic, Bill of Materials and Reference.......................................................................................................................
4.1 Schematic........................................................................................................................................................................
4.2 Bill of Materials.................................................................................................................................................................13
4.3 Reference.........................................................................................................................................................................13
5 Revision History...................................................................................................................................................................
Figure 2-1. TPS54225EVM-538 Efficiency..................................................................................................................................
Figure 2-2. TPS54225EVM-538 Load Regulation.......................................................................................................................
Figure 2-3. TPS54225EVM-538 Line Regulation........................................................................................................................
Figure 2-4. TPS54225EVM-538 Load Transient Response........................................................................................................
Figure 2-5. TPS54225EVM-538 Output Voltage Ripple..............................................................................................................
Figure 2-6. TPS54225EVM-538 Input Voltage Ripple.................................................................................................................
Figure 2-7. TPS54225EVM-538 Start Up....................................................................................................................................
Figure 2-8. TPS54225EVM-538 Switching Frequency................................................................................................................
Figure 3-1. Top Assembly............................................................................................................................................................
Figure 3-2. Top Layer.................................................................................................................................................................10
Figure 3-3. Internal Layer 1.......................................................................................................................................................
Figure 3-4. Internal Layer 2........................................................................................................................................................11
Figure 3-5. Bottom Layer...........................................................................................................................................................
Figure 3-6. Bottom Assembly....................................................................................................................................................
Figure 4-1. TPS54225EVM-538 Schematic Diagram................................................................................................................
Table 1-1. Input Voltage and Output Current
Table 1-2. TPS54225EVM-538 Performance Specifications
Table 1-3. Output Voltages..........................................................................................................................................................
Table 2-1. Connection and Test Points........................................................................................................................................
Table 4-1. Bill of Materials..........................................................................................................................................................13
Trademarks
D-CAP2 ™ is a trademark of Texas Instruments.
SLVU337A - NOVEMBER 2009 - REVISED OCTOBER 2021
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Table of Contents

Summary.................................................................................................................................2
List of Figures
List of Tables
Summary...............................................................................................................2
Summary.......................................................................................2
Copyright © 2021 Texas Instruments Incorporated
TPS54225 Step-Down Converter Evaluation Module User's Guide
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