Datasheet

User's Guide
SLVU751A–July 2012–Revised June 2013
TPS55340EVM-148, 8V to 24V Input, 5V Output Flyback
Evaluation Module
This user’s guide contains information for the TPS55340EVM-148 evaluation module (also called
PWR148) as well as the TPS55340 DC/DC converter. The document includes the performance
specifications, schematic, and the bill of materials for the TPS55340EVM-148.
Contents
1 Background .................................................................................................................. 2
2 Performance Specification Summary ..................................................................................... 2
3 Modifications ................................................................................................................. 2
4 Test Setup and Results .................................................................................................... 3
5 Board Layout ............................................................................................................... 10
6 Schematic and Bill of Materials .......................................................................................... 12
List of Figures
1 Efficiency..................................................................................................................... 5
2 Light-Load Efficiency ....................................................................................................... 5
3 Output Voltage Load Regulation.......................................................................................... 5
4 Output Voltage Line Regulation........................................................................................... 5
5 Load Transient Response ................................................................................................. 6
6 Loop Response.............................................................................................................. 6
7 Maximum Load Output Voltage Ripple................................................................................... 7
8 DCM Output Voltage Ripple ............................................................................................... 7
9 Pulse-Skipping Output Voltage Ripple ................................................................................... 7
10 Input Voltage Ripple ........................................................................................................ 8
11 DCM Input Voltage Ripple ................................................................................................. 8
12 SW Pin Voltage Overshoot ................................................................................................ 8
13 Turn On With EN............................................................................................................ 9
14 Turn Off With EN............................................................................................................ 9
15 Turn On With V
IN
............................................................................................................ 9
16 Turn Off With V
IN
............................................................................................................ 9
17 Top-Side Assembly and Silk ............................................................................................. 10
18 Top-Side Layout ........................................................................................................... 10
19 Internal Layer-1 Layout ................................................................................................... 11
20 Internal Layer-2 Layout ................................................................................................... 11
21 Bottom-Side Layout ....................................................................................................... 11
22 Schematic .................................................................................................................. 12
List of Tables
1 Input Voltage and Output Current Summary ............................................................................ 2
2 Performance Specification Summary..................................................................................... 2
3 EVM Connectors and Test Points ........................................................................................ 4
4 Bill of Materials............................................................................................................. 13
1
SLVU751A–July 2012–Revised June 2013 TPS55340EVM-148, 8V to 24V Input, 5V Output Flyback Evaluation Module
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