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User's Guide
SLVU991–November 2013
Evaluation Module for the TPS54341 Step-Down Converter
This user's guide contains information for the TPS54341EVM-555 evaluation module (PWR555) including
the performance specifications, schematic, and the bill of materials.
spacer so the title "List of Tables" will print on page with the list.
Contents
1 Introduction .................................................................................................................. 2
2 Test Setup and Results .................................................................................................... 5
3 Board Layout ............................................................................................................... 11
4 Bill of Materials ............................................................................................................. 14
List of Figures
1 TPS54341EVM-555 Board ................................................................................................ 2
2 TPS54341EVM-555 Schematic........................................................................................... 3
3 Efficiency Versus Load Current........................................................................................... 5
4 Light-Load Efficiency ....................................................................................................... 5
5 Regulation Versus Output Current........................................................................................ 6
6 Regulation Versus Input Voltage.......................................................................................... 6
7 Load Transient Response ................................................................................................. 6
8 Loop Response ............................................................................................................. 6
9 Line Transient Response .................................................................................................. 7
10 Input Voltage Ripple CCM................................................................................................. 7
11 Input Voltage Ripple DCM................................................................................................. 7
12 Output Voltage Ripple CCM .............................................................................................. 8
13 Output Voltage Ripple DCM .............................................................................................. 8
14 Output Voltage Ripple Eco-mode......................................................................................... 8
15 Start Up Relative to V
IN
.................................................................................................... 9
16 Start Up Relative to EN .................................................................................................... 9
17 Prebias Start Up Relative to EN .......................................................................................... 9
18 Shutdown Relative to V
IN
................................................................................................. 10
19 Shutdown Relative to EN................................................................................................. 10
20 Low Dropout Operation................................................................................................... 10
21 Low Dropout Start Up and Shutdown................................................................................... 10
22 TPS54341EVM-555 Top Assembly and Silkscreen .................................................................. 11
23 TPS54341EVM-555 Layer 2 Layout .................................................................................... 12
24 TPS54341EVM-555 Layer 3 Layout .................................................................................... 12
25 TPS54341EVM-555 Bottom-Side Layout .............................................................................. 13
List of Tables
1 Input Voltage and Output Current Summary ............................................................................ 2
2 TPS54341EVM-555 Performance Specification Summary............................................................ 3
3 R5 Values for Common Output Voltages................................................................................ 4
Eco-mode is a trademark of Texas Instruments.
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SLVU991–November 2013 Evaluation Module for the TPS54341 Step-Down Converter
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