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User's Guide
SLVU834–January 2013
TPS54239EEVM-056, 2-A, Regulator with Eco-Mode™
Evaluation Module
This user's guide contains information for the TPS54239EEVM-056 evaluation module as well as for the
TPS54239E. Included are the performance specifications, schematic, and the bill of materials of the
TPS54239EEVM-056.
Contents
1 Introduction .................................................................................................................. 3
2 Performance Specification Summary ..................................................................................... 3
3 Modifications ................................................................................................................. 3
3.1 Output Voltage Setpoint ........................................................................................... 3
3.2 Output Filter and Closed-Loop Response ...................................................................... 4
4 Test Setup and Results .................................................................................................... 4
4.1 Input/Output Connections ......................................................................................... 4
4.2 Start-Up Procedure ................................................................................................ 5
4.3 Efficiency ............................................................................................................ 5
4.4 Load Regulation .................................................................................................... 6
4.5 Line Regulation ..................................................................................................... 7
4.6 Load Transient Response ........................................................................................ 7
4.7 Output Voltage Ripple ............................................................................................. 8
4.8 Input Voltage Ripple ............................................................................................... 9
4.9 Start-Up ............................................................................................................ 10
4.10 Shut-Down ......................................................................................................... 11
5 Board Layout ............................................................................................................... 12
5.1 Layout .............................................................................................................. 12
6 Schematic, Bill of Materials, and Reference ........................................................................... 15
6.1 Schematic ......................................................................................................... 15
6.2 Bill of Materials .................................................................................................... 16
6.3 Reference .......................................................................................................... 16
List of Figures
1 TPS54239EEVM-056 Efficiency .......................................................................................... 5
2 TPS54239EEVM-056 Light-Load Efficiency............................................................................. 6
3 TPS54239EEVM-056 Load Regulation, V
IN
= 5 V and V
IN
= 12 V.................................................... 6
4 TPS54239EEVM-056 Line Regulation................................................................................... 7
5 TPS54239EEVM-056 Load Transient Response....................................................................... 7
6 TPS54239EEVM-056 Output Voltage Ripple (I
OUT
= 2 A).............................................................. 8
7 TPS54239EEVM-056 Output Voltage Ripple (I
OUT
= 50 mA).......................................................... 8
8 TPS54239EEVM-056 Output Voltage Ripple (I
OUT
= 0 A).............................................................. 9
9 TPS54239EEVM-056 Input Voltage Ripple ............................................................................. 9
10 TPS54239EEVM-056 Start-Up Relative to V
IN
with SS............................................................... 10
11 TPS54239EEVM-056 Start-Up Relative to EN with SS .............................................................. 10
12 TPS54239EEVM-056 Shut-Down Relative to V
IN
with SS ........................................................... 11
13 TPS54239EEVM-056 Shut-Down Relative to EN with SS........................................................... 11
Eco-Mode, D-CAP2, eco-mode are trademarks of Texas Instruments.
1
SLVU834–January 2013 TPS54239EEVM-056, 2-A, Regulator with Eco-Mode™ Evaluation Module
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