Texas Instruments TPS5430, User Manual

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User’s Guide
TPS5430 and TPS5431 Step-Down Converter Evaluation
Module User's Guide
Table of Contents
1 Introduction ............................................................................................................................................................................. 2
1.1 Background........................................................................................................................................................................ 2
1.2 Performance Specification Summary................................................................................................................................. 2
1.3 Modifications...................................................................................................................................................................... 3
2 Test Setup and Results .......................................................................................................................................................... 3
2.1 Input/Output Connections.................................................................................................................................................. 3
2.2 Efficiency............................................................................................................................................................................ 4
2.3 Output Voltage Load Regulation........................................................................................................................................ 5
2.4 Output voltage Line Regulation.......................................................................................................................................... 6
2.5 Load Transients.................................................................................................................................................................. 7
2.6 Loop Characteristics.......................................................................................................................................................... 8
2.7 Output Voltage Ripple........................................................................................................................................................ 9
2.8 Input Voltage Ripple......................................................................................................................................................... 10
2.9 Powering Up..................................................................................................................................................................... 11
3 Board Layout ......................................................................................................................................................................... 12
3.1 Layout.............................................................................................................................................................................. 12
4 Schematic and Bill of Materials ........................................................................................................................................... 14
4.1 Schematic........................................................................................................................................................................ 14
4.2 Bill of Materials................................................................................................................................................................. 16
5 Revision History ................................................................................................................................................................... 16
List of Figures
Figure 2-1. TPS5430 Efficiency................................................................................................................................................... 4
Figure 2-2. TPS5431 Efficiency................................................................................................................................................... 5
Figure 2-3. TPS5430 Load Regulation........................................................................................................................................ 5
Figure 2-4. TPS5431 Load Regulation........................................................................................................................................ 6
Figure 2-5. TPS5430 Line Regulation......................................................................................................................................... 6
Figure 2-6. TPS5431 Line Regulation......................................................................................................................................... 7
Figure 2-7. PS5430 Transient Response..................................................................................................................................... 7
Figure 2-8. TPS5431 Transient Response.................................................................................................................................. 8
Figure 2-9. TPS5430 Loop Response......................................................................................................................................... 8
Figure 2-10. PS5431 Loop Response......................................................................................................................................... 9
Figure 2-11. TPS5430 Output Ripple........................................................................................................................................... 9
Figure 2-12. PS5431 Output Ripple........................................................................................................................................... 10
Figure 2-13. TPS5430 Input Ripple........................................................................................................................................... 10
Figure 2-14. TPS5431 Input Ripple............................................................................................................................................ 11
Figure 2-15. TPS5430 and TPS5431 Start-Up.......................................................................................................................... 11
Figure 3-1. Top-Side Layout...................................................................................................................................................... 12
Figure 3-2. Bottom-Side Layout (Looking From Top Side)........................................................................................................ 13
Figure 3-3. Top-Side Assembly.................................................................................................................................................. 13
Figure 4-1. TPS5430EVM-173 Schematic................................................................................................................................. 15
List of Tables
Table 1-1. Input Voltage and Output Current Summary............................................................................................................... 2
Table 1-2. TPS5430EVM-173 and TPS5431EVM-173 Performance Specification Summary..................................................... 2
Table 1-3. Output Voltages Available........................................................................................................................................... 3
Table 2-1. EVM Connectors and Test Points............................................................................................................................... 4
Table 4-1. TPS5430EVM-173 Bill of Materials........................................................................................................................... 16
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SLVU157A – MARCH 2006 – REVISED OCTOBER 2021
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TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's
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