Texas Instruments TPS54326EVM-540, User Manual, Page: 1 / 20

User’s Guide
TPS54326 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 .......................................................................................................................................................... 4
2.1 Input/Output Connections.................................................................................................................................................. 4
2.2 Start Up Procedure............................................................................................................................................................ 4
2.3 Efficiency............................................................................................................................................................................ 5
2.4 Load Regulation................................................................................................................................................................. 5
2.5 Line Regulation.................................................................................................................................................................. 6
2.6 Load Transient Response.................................................................................................................................................. 6
2.7 Output Voltage Ripple........................................................................................................................................................ 7
2.8 Input Voltage Ripple........................................................................................................................................................... 7
2.9 Start Up.............................................................................................................................................................................. 8
2.10 Switching Frequency........................................................................................................................................................ 8
3 Board Layout ........................................................................................................................................................................... 9
3.1 Layout................................................................................................................................................................................ 9
4 Schematic, Bill of Materials and Reference ....................................................................................................................... 13
4.1 Schematic........................................................................................................................................................................ 13
4.2 Bill of Materials................................................................................................................................................................. 14
4.3 Reference......................................................................................................................................................................... 14
5 Revision History ................................................................................................................................................................... 14
List of Figures
Figure 2-1. TPS54326EVM-540 Efficiency.................................................................................................................................. 5
Figure 2-2. TPS54326EVM-540 Load Regulation....................................................................................................................... 5
Figure 2-3. TPS54326EVM-540 Line Regulation........................................................................................................................ 6
Figure 2-4. TPS54326EVM-540 Load Transient Response........................................................................................................ 6
Figure 2-5. TPS54326EVM-540 Output Voltage Ripple.............................................................................................................. 7
Figure 2-6. TPS54326EVM-540 Input Voltage Ripple................................................................................................................. 7
Figure 2-7. TPS54326EVM-540 Start Up.................................................................................................................................... 8
Figure 2-8. TPS54326-540 Switching Frequency........................................................................................................................ 8
Figure 3-1. Top Assembly............................................................................................................................................................ 9
Figure 3-2. Top Layer................................................................................................................................................................. 10
Figure 3-3. Internal Layer 1....................................................................................................................................................... 10
Figure 3-4. Internal Layer 2........................................................................................................................................................ 11
Figure 3-5. Bottom Layer........................................................................................................................................................... 11
Figure 3-6. Bottom Assembly.................................................................................................................................................... 12
Figure 4-1. TPS54326EVM-540 Schematic Diagram................................................................................................................ 13
List of Tables
Table 1-1. Input Voltage and Output Current Summary............................................................................................................... 2
Table 1-2. TPS54326 EVM and Performance Specifications Summary...................................................................................... 2
Table 1-3. Output Voltages.......................................................................................................................................................... 3
Table 2-1. Connection and Test Points........................................................................................................................................ 4
Table 4-1. Bill of Materials.......................................................................................................................................................... 14
Trademarks
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SLVU353A – NOVEMBER 2009 – REVISED OCTOBER 2021
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