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User's Guide
SLVU491–November 2011
TPS54294 Dual Channel SWIFT™ Evaluation Module
This user's guide contains information for the TPS54294EVM evaluation module as well as for the
TPS54294. Included are the performance specifications, schematic, and the bill of materials of the
TPS54294EVM.
Contents
1 Introduction .................................................................................................................. 3
2 Performance Specification Summary ..................................................................................... 3
3 Modifications ................................................................................................................. 4
3.1 Output Voltage Setpoint ........................................................................................... 4
3.2 Output Filter and Closed-Loop Response ...................................................................... 4
4 Test Setup and Results .................................................................................................... 5
4.1 Input/Output Connections ......................................................................................... 5
4.2 Start-Up Procedure ................................................................................................ 5
4.3 Efficiency ............................................................................................................ 6
4.4 Load Regulation .................................................................................................... 7
4.5 Line Regulation ..................................................................................................... 8
4.6 Load Transient Response ........................................................................................ 9
4.7 Output Voltage Ripple ........................................................................................... 10
4.8 Input Voltage Ripple .............................................................................................. 13
4.9 Start-Up and Shutdown .......................................................................................... 14
5 Board Layout ............................................................................................................... 18
5.1 Layout .............................................................................................................. 18
6 Schematic, Bill of Materials, and Reference ........................................................................... 22
6.1 Schematic ......................................................................................................... 22
6.2 Bill of Materials .................................................................................................... 23
6.3 Reference .......................................................................................................... 23
List of Figures
1 TPS54294EVM Converter 1 Efficiency................................................................................... 6
2 TPS54294EVM Converter 2 Efficiency................................................................................... 6
3 TPS54294EVM Converter 1 Load Regulation .......................................................................... 7
4 TPS54294EVM Converter 2 Load Regulation .......................................................................... 7
5 TPS54294EVM Converter 1 Line Regulation ........................................................................... 8
6 TPS54294EVM Converter 2 Line Regulation ........................................................................... 8
7 TPS54294EVM Converter 1 Load Transient Response ............................................................... 9
8 TPS54294EVM Converter 2 Load Transient Response ............................................................... 9
9 TPS54294EVM Converter 1 Output Voltage Ripple .................................................................. 10
10 TPS54294EVM Converter 1 Eco-mode™ Output Voltage Ripple .................................................. 10
11 TPS54294EVM Converter 1 Eco-mode™ Output Voltage Ripple at No Load .................................... 11
12 TPS54294EVM Converter 2 Output Voltage Ripple .................................................................. 11
13 TPS54294EVM Converter 2 Eco-mode™ Output Voltage Ripple .................................................. 12
14 TPS54294EVM Converter 2 Eco-mode™ Output Voltage Ripple at No Load .................................... 12
15 TPS54294EVM Input Voltage Ripple ................................................................................... 13
SWIFT, Eco-mode, D-CAP2 are trademarks of Texas Instruments.
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SLVU491–November 2011 TPS54294 Dual Channel SWIFT™ Evaluation Module
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