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User's Guide
SLVU973–September 2013
Evaluation Module for the TPS54540-Q1 Step-Down
Converter
This user's guide contains information for the TPS54540-Q1EVM-593 evaluation module (PWR593)
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 Bill of Materials ............................................................................................................. 15
List of Figures
1 TPS54540-Q1EVM-593 Board............................................................................................ 2
2 TPS54540-Q1EVM-593 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 SW Voltage Without Snubber ............................................................................................ 9
16 SW Voltage With Snubber................................................................................................. 9
17 Start Up Relative to V
IN
Ramping Up ................................................................................... 10
18 Start Up Using EN......................................................................................................... 10
19 Prebias Start Up Using EN............................................................................................... 10
20 Shutdown Relative to V
IN
................................................................................................. 11
21 Shutdown Relative to EN................................................................................................. 11
22 Low Dropout Operation................................................................................................... 11
23 Low Dropout Start Up and Shutdown................................................................................... 11
24 TPS54540-Q1EVM-593 Top Assembly and Silkscreen.............................................................. 12
25 TPS54540-Q1EVM-593 Layer 2 Layout................................................................................ 13
26 TPS54540-Q1EVM-593 Layer 3 Layout................................................................................ 13
27 TPS54540-Q1EVM-593 Bottom-Side Assembly and Silkscreen (Viewed From Top)............................ 14
List of Tables
Eco-mode is a trademark of Texas Instruments.
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SLVU973–September 2013 Evaluation Module for the TPS54540-Q1 Step-Down Converter
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