Texas Instruments TPS54383, User Manual, Page: 1 / 28

User’s Guide
TPS54383 Step-Down Converter Evaluation Module User's
Guide
Table of Contents
1 Introduction ............................................................................................................................................................................. 3
1.1 Description......................................................................................................................................................................... 3
1.2 Applications........................................................................................................................................................................ 3
1.3 Features............................................................................................................................................................................. 3
2 TPS54383EVM Electrical Performance Specifications ........................................................................................................ 4
3 Schematic ................................................................................................................................................................................ 5
3.1 Sequencing Jump (JP3)..................................................................................................................................................... 6
3.2 Enable Jumpers (JP1 and JP2)......................................................................................................................................... 6
3.3 Test Point Descriptions....................................................................................................................................................... 6
4 Test Set Up .............................................................................................................................................................................. 8
4.1 Equipment.......................................................................................................................................................................... 8
4.2 Equipment Setup................................................................................................................................................................ 9
4.3 Start Up / Shut Down Procedure...................................................................................................................................... 11
4.4 Output Ripple Voltage Measurement Procedure.............................................................................................................. 11
4.5 Control Loop Gain and Phase Measurement Procedure.................................................................................................. 11
4.6 Equipment Shutdown....................................................................................................................................................... 11
5 TPS54383EVM Typical Performance Data and Characteristic Curves ............................................................................. 12
5.1 Efficiency.......................................................................................................................................................................... 12
5.2 Line and Load Regulation................................................................................................................................................ 13
5.3 Output Voltage Ripple...................................................................................................................................................... 13
5.4 Switch Node..................................................................................................................................................................... 14
5.5 Control Loop Bode Plot (low line, V
IN
= 8 V).................................................................................................................... 14
5.6 Light Load Operation (revision A PCB only).................................................................................................................... 15
6 EVM Assembly Drawings and Layout ................................................................................................................................. 16
7 List of Materials ..................................................................................................................................................................... 22
8 Revision History ................................................................................................................................................................... 22
List of Figures
Figure 3-1. TPS54383EVM Schematic........................................................................................................................................ 5
Figure 4-1. TPS54383EVM Recommended Test Set-Up............................................................................................................ 9
Figure 4-2. Tip and Barrel Measurement Technique (output ripple measurement using TP3 and TP4 or TP18 and TP19)..... 10
Figure 4-3. Control Loop Measurement Setup.......................................................................................................................... 10
Figure 5-1. TPS54383EVM Efficiency verse Load Current V
IN
=9.6-13.2 V, V
OUT1
= 5.0 V I
OUT1
= 0-2 A, V
OUT2
= 3.3 V
I
OUT2
= 0-2 A.......................................................................................................................................................................... 12
Figure 5-2. TPS54383EVM Output Voltage verse Load Current V
IN
=9.6-13.2 V, V
OUT1
= 5.0 V I
OUT1
= 0-2 A, V
OUT2
=
3.3 V I
OUT2
= 0-2 A................................................................................................................................................................. 13
Figure 5-3. TPS54383EVM Output Voltage Ripple (V
IN
= 13.2 V, I
OUT1
= I
OUT2
= 2 A)............................................................. 13
Figure 5-4. TPS54383EVM Switching Waveforms V
IN
= 12 V, I
OUT
= 2 A Ch1: TP9 (SW1), Ch2: TP12 (SW2)....................... 14
Figure 5-5. TPS54383EVM Gain and Phase vs Frequency...................................................................................................... 14
Figure 6-1. TPS54383EVM Component Placement (viewed from top)..................................................................................... 16
Figure 6-2. TPS54383EVM Silkscreen (viewed from top)......................................................................................................... 17
Figure 6-3. TPS54383EVM Top Copper (viewed from top)....................................................................................................... 18
Figure 6-4. TPS54383EVM Bottom Copper (x-ray view from top)............................................................................................. 19
Figure 6-5. TPS54383EVM Internal 1 (x-ray view from top)...................................................................................................... 20
Figure 6-6. TPS54383EVM Internal 2 (x-ray view from top)...................................................................................................... 21
List of Tables
Table 2-1. Electrical Performance Specifications......................................................................................................................... 4
Table 3-1. Test Point Descriptions............................................................................................................................................... 6
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SLUU285D – JULY 2007 – REVISED OCTOBER 2021
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TPS54383 Step-Down Converter Evaluation Module User's Guide 1
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