Datasheet

User's Guide
SLUU408–FEBRUARY 2010
High Performance Synchronous Buck EVM Using the
TPS51125A
Contents
1 Introduction .................................................................................................................. 2
2 Performance Specification Summary ..................................................................................... 2
3 Schematic .................................................................................................................... 3
4 Test Setup and Results .................................................................................................... 4
5 Configuration ................................................................................................................ 6
6 Physical Layouts ............................................................................................................ 6
7 List of Materials ............................................................................................................. 9
8 References ................................................................................................................. 10
List of Figures
1 TPS51125A-EVM Schematic Diagram................................................................................... 3
2 Equipment Setup for TPS51125AEVM board........................................................................... 4
3 5-V Startup Waveforms .................................................................................................... 5
4 3.3-V Startup Waveforms .................................................................................................. 5
5 5-V Load Transient Response ............................................................................................ 5
6 3.3-V Load Transient Response .......................................................................................... 5
7 Top Layer Routing .......................................................................................................... 7
8 Bottom Layer Routing ...................................................................................................... 7
9 Inner Layer 1 ................................................................................................................ 8
10 Inner Layer 2 ................................................................................................................ 8
List of Tables
1 Performance Specification Summary..................................................................................... 2
2 Switching Frequency Selection ........................................................................................... 6
3 Operation Mode Selection ................................................................................................. 6
4 VLCK Control ................................................................................................................ 6
5 TPS51125A Bill of Materials .............................................................................................. 9
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SLUU408–FEBRUARY 2010 High Performance Synchronous Buck EVM Using the TPS51125A
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