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User's Guide
SLUU311 – APRIL 2008
High Performance Synchronous Buck EVM Using the
TPS51125
Contents
1 Introduction ................................................................................................................... 2
2 Performance Specification Summary ..................................................................................... 2
3 Schematic ..................................................................................................................... 3
4 Test Setup and Results ..................................................................................................... 4
5 Configuration ................................................................................................................. 6
6 Physical Layouts ............................................................................................................. 7
7 List of Materials .............................................................................................................. 9
8 References .................................................................................................................. 10
List of Figures
1 TPS51125-EVM Schematic Diagram ..................................................................................... 3
2 Equipment Setup for TPS51125EVM 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 TPS51125 Bill of Materials ................................................................................................ 9
SLUU311 – APRIL 2008 High Performance Synchronous Buck EVM Using the TPS51125 1
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