Texas Instruments SWIFT TPS548A20, Руководство пользователя

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User’s Guide
TPS548A20 SWIFT™ Step-Down Converter Evaluation
Module User's Guide
Table of Contents
1 Introduction ............................................................................................................................................................................. 2
2 Description .............................................................................................................................................................................. 3
2.1 Typical Applications............................................................................................................................................................ 3
2.2 Features............................................................................................................................................................................. 3
3 Electrical Performance Specifications ................................................................................................................................. 4
4 Schematic ................................................................................................................................................................................ 5
5 Test Setup ................................................................................................................................................................................ 7
5.1 Test Equipment.................................................................................................................................................................. 7
5.2 Recommended Test Setup................................................................................................................................................. 8
6 Configurations ........................................................................................................................................................................ 9
6.1 Switching Frequency Selection.......................................................................................................................................... 9
6.2 Mode Selection.................................................................................................................................................................. 9
6.3 VDD Pin Supply Selection................................................................................................................................................ 10
7 Test Procedure ...................................................................................................................................................................... 11
7.1 Line and Load Regulation and Efficiency Measurement Procedure................................................................................. 11
7.2 Control-Loop Gain and Phase-Measurement Procedure................................................................................................. 11
7.3 List of Test Points............................................................................................................................................................. 12
7.4 Equipment Shutdown....................................................................................................................................................... 12
8 EVM Assembly Drawing and PCB Layout .......................................................................................................................... 13
9 Bill of Materials ..................................................................................................................................................................... 17
10 Revision History ................................................................................................................................................................. 18
List of Figures
Figure 4-1. TPS548A20EVM-737 Schematic.............................................................................................................................. 6
Figure 5-1. Tip and Barrel Measurement for Output Voltage Ripple............................................................................................ 7
Figure 5-2. TPS548A20EVM-587 Top Layer for Test Setup........................................................................................................ 8
Figure 8-1. TPS548A20EVM-587 Top-Layer Assembly Drawing.............................................................................................. 13
Figure 8-2. TPS548A20EVM-587 Bottom-Layer Assembly Drawing......................................................................................... 13
Figure 8-3. TPS548A20EVM-587 Top Layer, Copper................................................................................................................ 14
Figure 8-4. TPS548A20EVM-587 Layer Two, Copper............................................................................................................... 14
Figure 8-5. TPS548A20EVM-587 Layer Three, Copper............................................................................................................ 15
Figure 8-6. TPS548A20EVM-587 Layer Four, Copper.............................................................................................................. 15
Figure 8-7. TPS548A20EVM-587 Layer Five, Copper.............................................................................................................. 16
Figure 8-8. TPS548A20EVM-587 Bottom Layer, Copper.......................................................................................................... 16
List of Tables
Table 3-1. TPS548A20EVM-737 Electrical Performance Specifications
(1)
................................................................................. 4
Table 4-1. Device Pin-Out Difference Summary.......................................................................................................................... 5
Table 6-1. Switching Frequency Selection................................................................................................................................... 9
Table 6-2. Mode Selection........................................................................................................................................................... 9
Table 6-3. Enable Selection....................................................................................................................................................... 10
Table 7-1. Test Point Functions.................................................................................................................................................. 12
Table 9-1. EVM Components List (Based on the Schematic, See Figure 4-1 ).......................................................................... 17
Trademarks
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www.ti.com Table of Contents
SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021
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