Datasheet

User's Guide
SLVU793October 2012
TPS56921EVM-188, 9-A, SWIFT™ Regulator
Evaluation Module
This user’s guide contains information for the TPS56921EVM-188 evaluation module (PWR188) as well as
for the TPS56921 dc/dc converter. Also included are the performance specifications, the schematic, and
the bill of materials for the TPS56921EVM-188.
Contents
1 Introduction .................................................................................................................. 2
2 Test Setup and Results .................................................................................................... 4
3 Board Layout ............................................................................................................... 12
4 Schematic and Bill of Materials .......................................................................................... 14
List of Figures
1 TPS56921EVM-188 Efficiency ............................................................................................ 5
2 TPS56921EVM-188 Low Current Efficiency............................................................................. 6
3 TPS56921EVM-188 Load Regulation .................................................................................... 6
4 TPS56921EVM-188 Line Regulation..................................................................................... 7
5 TPS56921EVM-188 Transient Response ............................................................................... 7
6 TPS56921EVM-188 Loop Response, V
OUT
Set by Resistor Divider.................................................. 8
7 TPS56921EVM-188 Loop Response, V
OUT
Set by I
2
C Interface ...................................................... 8
8 TPS56921EVM-188 Output Ripple ....................................................................................... 9
9 TPS56921EVM-188 Input Ripple ......................................................................................... 9
10 TPS56921EVM-188 Start-Up Relative to V
IN
.......................................................................... 10
11 TPS56921EVM-188 Start-Up Relative to Enable ..................................................................... 10
12 TPS56921EVM-188 Start-Up Relative to V
IN
Detail................................................................... 11
13 TPS56921EVM-188 Top-Side Assembly............................................................................... 12
14 TPS56921EVM-188 Top-Side Layout .................................................................................. 12
15 TPS56921EVM-188 Internal Layer-1 Layout .......................................................................... 12
16 TPS56921EVM-188 Internal Layer-2 Layout .......................................................................... 12
17 TPS56921EVM-188 Bottom-Side Layout .............................................................................. 13
18 TPS56921EVM-188 Schematic.......................................................................................... 14
List of Tables
1 Input Voltage and Output Current Summary ............................................................................ 2
2 TPS56921EVM-188 Performance Specification Summary............................................................ 2
3 Ideal VOUT versus Code .................................................................................................. 3
4 EVM Connectors and Test Points ........................................................................................ 5
5 TPS56921EVM-188 Bill of Materials.................................................................................... 15
SWIFT is a trademark of Texas Instruments.
I
2
C is a trademark of NXP.
1
SLVU793October 2012 TPS56921EVM-188, 9-A, SWIFT™ Regulator Evaluation Module
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Copyright © 2012, Texas Instruments Incorporated

Summary of content (17 pages)