Texas Instruments TPS54325, User Manual

Page: 1 / 21

User’s Guide
TPS54325 Step-Down Converter Evaluation Module User's
Guide
Table of Contents
1 Introduction ............................................................................................................................................................................. 3
1.1 Background........................................................................................................................................................................ 3
1.2 Performance Specification Summary................................................................................................................................. 3
1.3 Modifications...................................................................................................................................................................... 3
2 Test Setup and Results .......................................................................................................................................................... 4
2.1 Test Setup.......................................................................................................................................................................... 4
2.2 Test Procedure................................................................................................................................................................... 4
2.3 Efficiency............................................................................................................................................................................ 5
2.4 Load Regualtion................................................................................................................................................................. 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 and Bill of Materials ........................................................................................................................................... 13
4.1 Schematic........................................................................................................................................................................ 13
4.2 Bill of Materials................................................................................................................................................................. 14
5 References ............................................................................................................................................................................ 15
6 Revision History ................................................................................................................................................................... 15
List of Figures
Figure 2-1. Equipment Setup for TPS54325EVM Board............................................................................................................. 4
Figure 2-2. TPS54325EVM Efficiency......................................................................................................................................... 5
Figure 2-3. TPS54325EVM Load Regulation.............................................................................................................................. 5
Figure 2-4. TPS54325EVM Line Regulation................................................................................................................................ 6
Figure 2-5. TPS54325EVM Load Transient Response................................................................................................................ 6
Figure 2-6. TPS54325EVM Output Voltage Ripple...................................................................................................................... 7
Figure 2-7. TPS54325EVM Input Voltage Ripple........................................................................................................................ 7
Figure 2-8. TPS54325EVM Start Up........................................................................................................................................... 8
Figure 2-9. TPS54325EVM 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 (as Viewed from Back Side)....................................................................................................... 12
Figure 4-1. TPS54325EVM Schematic Diagram....................................................................................................................... 13
List of Tables
Table 1-1. EVM Input Voltage and Output Current Summary...................................................................................................... 3
Table 1-2. TPS54325EVM Performance Specifications Summary.............................................................................................. 3
Table 1-3. Output Voltages.......................................................................................................................................................... 4
Table 4-1. Bill of Materials.......................................................................................................................................................... 14
Trademarks
SWIFT ™ , D-CAP2 ™ and are trademarks of Texas Instruments.
www.ti.com Table of Contents
SLVU300A – JUNE 2009 – REVISED OCTOBER 2021
Submit Document Feedback
TPS54325 Step-Down Converter Evaluation Module User's Guide 1
Copyright © 2021 Texas Instruments Incorporated