Datasheet

User's Guide
SLUU340 – FEBRUARY 2009
High Performance Synchronous Buck EVM Using the
TPS51123
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 ............................................................................................................. 11
8 References .................................................................................................................. 12
List of Figures
1 TPS51123-EVM Schematic Diagram ..................................................................................... 3
2 Equipment Setup for TPS51123EVM 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 ....................................................................................................... 8
9 Inner Layer 1 ................................................................................................................. 9
10 Inner Layer 2 ................................................................................................................ 10
List of Tables
1 Performance Specification Summary ..................................................................................... 2
2 Switching Frequency Selection ............................................................................................ 6
3 Operation Mode Selection .................................................................................................. 6
4 TPS51123 List of Materials .............................................................................................. 11
SLUU340 – FEBRUARY 2009 High Performance Synchronous Buck EVM Using the TPS51123 1
Submit Documentation Feedback