Datasheet

User's Guide
SLVU794A–October 2012–Revised February 2013
Using the TPS54340 Step-Down Converter Evaluation
Module
This user's guide contains information for the TPS54340EVM-182 evaluation module (PWR182) 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 ............................................................................................................... 12
4 Schematic and Bill of Materials .......................................................................................... 15
List of Figures
1 TPS54340EVM-182 Board ................................................................................................ 2
2 Efficiency Versus Load Current ........................................................................................... 5
3 Light-Load Efficiency ....................................................................................................... 5
4 Efficiency Versus Load Current ........................................................................................... 6
5 Light Load Efficiency ....................................................................................................... 6
6 Regulation Versus Output Current........................................................................................ 6
7 Regulation Versus Input Voltage.......................................................................................... 6
8 Load Transient Response ................................................................................................. 7
9 Loop Response ............................................................................................................. 7
10 Line Transient Response .................................................................................................. 7
11 Output Voltage Ripple CCM .............................................................................................. 8
12 Output Voltage Ripple DCM .............................................................................................. 8
13 Output Voltage Ripple Eco-mode......................................................................................... 8
14 Input Voltage Ripple CCM ................................................................................................. 9
15 Input Voltage Ripple DCM ................................................................................................. 9
16 Start Up Relative to V
IN
.................................................................................................. 10
17 Start Up Relative to EN................................................................................................... 10
18 Prebias Start Up Relative to EN......................................................................................... 10
19 Shutdown Relative to V
IN
................................................................................................. 11
20 Shutdown Relative to EN................................................................................................. 11
21 Low Dropout Operation................................................................................................... 11
22 Low Dropout Start Up and Shutdown................................................................................... 11
23 TPS54340EVM-182 Top Assembly and Silkscreen .................................................................. 12
24 TPS54340EVM-182 Top-Side Layout .................................................................................. 13
25 TPS54340EVM-182 Layer 2 Layout .................................................................................... 13
26 TPS54340EVM-182 Layer 3 Layout .................................................................................... 14
27 TPS54340EVM-182 Bottom-Side Layout .............................................................................. 14
28 TPS54340EVM-182 Schematic.......................................................................................... 15
Eco-mode is a trademark of Texas Instruments.
1
SLVU794A–October 2012–Revised February 2013 Using the TPS54340 Step-Down Converter Evaluation Module
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