Texas Instruments TPS40195, User Manual

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User’s Guide
TPS40195 Buck Controller Evaluation Module User's
Guide
Table of Contents
1 Introduction ............................................................................................................................................................................. 2
2 Description .............................................................................................................................................................................. 2
2.1 Applications........................................................................................................................................................................ 2
2.2 Features............................................................................................................................................................................. 2
3 TPS40195EVM Electrical Performance Specifications ........................................................................................................ 3
4 Schematic ................................................................................................................................................................................ 4
4.1 Test Points.......................................................................................................................................................................... 5
5 Test Setup ................................................................................................................................................................................ 5
5.1 Equipment.......................................................................................................................................................................... 5
5.2 Equipment Setup................................................................................................................................................................ 7
6 Test Procedure ........................................................................................................................................................................ 8
6.1 Line and Load Regulation.................................................................................................................................................. 8
6.2 Output Ripple Measurement (TP5, TP13).......................................................................................................................... 8
6.3 Loop Analysis (TP7, TP8, TP10)........................................................................................................................................ 9
6.4 Disable (TP11) and Power Good (TP9)............................................................................................................................ 10
6.5 Switch Node (TP4) and SYNC (TP12)............................................................................................................................. 10
6.6 Equipment Shutdown....................................................................................................................................................... 10
7 TPS40195EVM Typical Performance Data and Characteristic Curves ............................................................................. 11
7.1 Line and Load Regulation................................................................................................................................................. 11
7.2 Efficiency.......................................................................................................................................................................... 11
7.3 Output Voltage Ripple...................................................................................................................................................... 12
7.4 Transient Response......................................................................................................................................................... 12
7.5 Bode Plots........................................................................................................................................................................ 13
7.6 Test Point Waveforms...................................................................................................................................................... 14
8 EVM Assembly Drawings and Layout ................................................................................................................................. 15
9 List of Materials ..................................................................................................................................................................... 17
10 Revision History ................................................................................................................................................................. 17
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SLUU297B – DECEMBER 2007 – REVISED JANUARY 2022
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