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User's Guide
SLVU453–April 2011
TPS54227EVM-686, 2-A, SWIFT™ Regulator
Evaluation Module
This user's guide contains information for the TPS54227 as well as support documentation for the
TPS54227EVM-686 evaluation module. Included are the performance specifications, schematic, and the
bill of materials of the TPS54227EVM-686.
Contents
1 Introduction .................................................................................................................. 2
2 Performance Specification Summary ..................................................................................... 2
3 Modifications ................................................................................................................. 3
3.1 Output Voltage Setpoint ........................................................................................... 3
3.2 Output Filter and Closed-Loop Response ...................................................................... 3
4 Test Setup and Results .................................................................................................... 3
4.1 Input/Output Connections ......................................................................................... 4
4.2 Start-Up Procedure ................................................................................................ 4
4.3 Efficiency ............................................................................................................ 5
4.4 Load Regulation .................................................................................................... 6
4.5 Line Regulation ..................................................................................................... 6
4.6 Load Transient Response ........................................................................................ 7
4.7 Output Voltage Ripple ............................................................................................. 8
4.8 Input Voltage Ripple ............................................................................................... 8
4.9 Start-Up ............................................................................................................. 9
5 Board Layout ............................................................................................................... 10
5.1 Layout .............................................................................................................. 10
6 Schematic, Bill of Materials, and Reference ........................................................................... 13
6.1 Schematic ......................................................................................................... 13
6.2 Bill of Materials .................................................................................................... 13
6.3 Reference .......................................................................................................... 14
List of Figures
1 TPS54227EVM-686 Efficiency ............................................................................................ 5
2 TPS54227EVM-686 Light Load Efficiency............................................................................... 5
3 TPS54227EVM-686 Load Regulation, V
IN
= 5 V........................................................................ 6
4 TPS54227EVM-686 Load Regulation, V
IN
= 12 V....................................................................... 6
5 TPS54227EVM-686 Line Regulation..................................................................................... 7
6 TPS54227EVM-686 Load Transient Response......................................................................... 7
7 TPS54227EVM-686 Output Voltage Ripple ............................................................................. 8
8 TPS54227EVM-686 Input Voltage Ripple ............................................................................... 8
9 TPS54227EVM-686 Start-Up Relative to V
IN
............................................................................ 9
10 TPS54227EVM-686 Start-Up Relative to EN ........................................................................... 9
11 Top Assembly.............................................................................................................. 10
12 Top Layer................................................................................................................... 11
13 Bottom Layer............................................................................................................... 11
14 Bottom Assembly.......................................................................................................... 12
SWIFT, D-CAP2 are trademarks of Texas Instruments.
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SLVU453–April 2011 TPS54227EVM-686, 2-A, SWIFT™ Regulator— Evaluation Module
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