Texas Instruments TPS54320, Руководство пользователя

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User’s Guide
TPS54320 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 Efficiency............................................................................................................................................................................ 5
2.3 Output Voltage Load Regulation........................................................................................................................................ 6
2.4 Output Voltage Line Regulation......................................................................................................................................... 6
2.5 Load Transients.................................................................................................................................................................. 7
2.6 Loop Characteristics.......................................................................................................................................................... 7
2.7 Output Voltage Ripple........................................................................................................................................................ 8
2.8 Input Voltage Ripple........................................................................................................................................................... 8
2.9 Powering Up....................................................................................................................................................................... 9
2.10 Thermal Characteristics................................................................................................................................................. 10
3 Board Layout ......................................................................................................................................................................... 11
3.1 Layout............................................................................................................................................................................... 11
3.2 Estimated Circuit Area..................................................................................................................................................... 13
4 Schematic and Bill of Materials ........................................................................................................................................... 14
4.1 Schematic........................................................................................................................................................................ 14
4.2 Bill of Materials................................................................................................................................................................. 15
5 Revision History ................................................................................................................................................................... 15
List of Figures
Figure 2-1. TPS54320 Efficiency................................................................................................................................................. 5
Figure 2-2. TPS54320 Low Current Efficiency............................................................................................................................. 5
Figure 2-3. TPS54320 Load Regulation...................................................................................................................................... 6
Figure 2-4. TPS54320 Line Regulation....................................................................................................................................... 6
Figure 2-5. TPS54320 Transient Response................................................................................................................................ 7
Figure 2-6. TPS54320 Loop Response....................................................................................................................................... 7
Figure 2-7. TPS54320 Output Ripple.......................................................................................................................................... 8
Figure 2-8. TPS54320 Input Ripple............................................................................................................................................. 8
Figure 2-9. TPS54320 Start-Up Relative to V
IN
.......................................................................................................................... 9
Figure 2-10. TPS54320 Start-Up Relative to Enable................................................................................................................... 9
Figure 2-11. TPS54320 Thermal Image..................................................................................................................................... 10
Figure 3-1. TPS54320 Top-Side Layout..................................................................................................................................... 11
Figure 3-2. TPS54320 Bottom-Side Layout............................................................................................................................... 12
Figure 3-3. TPS54320 Top-Side Assembly................................................................................................................................ 13
Figure 4-1. TPS54320EVM-513 Schematic............................................................................................................................... 14
List of Tables
Table 1-1. Input Voltage and Output Current Summary............................................................................................................... 2
Table 1-2. TPS54320 Performance Specification Summary........................................................................................................ 2
Table 1-3. Output Voltages Available........................................................................................................................................... 3
Table 2-1. EVM Connectors and Test Points............................................................................................................................... 4
Table 4-1. TPS54320 Bill of Materials........................................................................................................................................ 15
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SLVU380A – SEPTEMBER 2010 – REVISED OCTOBER 2021
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TPS54320 Step-Down Converter Evaluation Module User's Guide 1
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