Texas Instruments TPS53313EVM-078, Руководство пользователя

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User’s Guide
TPS53313 Step-Down Converter Evaluation Module User's
Guide
Table of Contents
1 Introduction ............................................................................................................................................................................. 3
2 Description .............................................................................................................................................................................. 3
2.1 Typical Applications............................................................................................................................................................ 3
2.2 Features............................................................................................................................................................................. 3
3 Electrical Performance Specifications ................................................................................................................................. 3
4 Schematic ................................................................................................................................................................................ 4
5 Test Setup ................................................................................................................................................................................ 5
5.1 Test Equipment.................................................................................................................................................................. 5
5.2 Recommended Test Setup................................................................................................................................................. 6
6 Configurations ........................................................................................................................................................................ 7
6.1 Mode and Soft-Start Time Selection.................................................................................................................................. 7
6.2 Overcurrent Protection (OCP) Selection............................................................................................................................ 7
6.3 Enable Selection................................................................................................................................................................ 7
6.4 Switching Frequency Selection or External Clock Input for Synchronization..................................................................... 7
7 Test Procedure ........................................................................................................................................................................ 8
7.1 Line/Load Regulation and Efficiency Measurement Procedure......................................................................................... 8
7.2 Control Loop Gain and Phase Measurement Procedure................................................................................................... 8
7.3 List of Test Points............................................................................................................................................................... 8
7.4 Equipment Shutdown......................................................................................................................................................... 8
8 Performance Data and Typical Characteristic Curves ........................................................................................................ 9
8.1 Efficiency............................................................................................................................................................................ 9
8.2 Load Regulation................................................................................................................................................................. 9
8.3 Line Regulation................................................................................................................................................................ 10
8.4 Output Transient............................................................................................................................................................... 11
8.5 Output Ripple................................................................................................................................................................... 12
8.6 Switching Node................................................................................................................................................................ 13
8.7 Start Up............................................................................................................................................................................ 14
8.8 Shut Down........................................................................................................................................................................ 15
8.9 Over-Current Protection................................................................................................................................................... 15
8.10 Synchronization.............................................................................................................................................................. 16
8.11 Bode Plot........................................................................................................................................................................ 16
8.12 Thermal Image............................................................................................................................................................... 17
9 EVM Assembly Drawing and PCB Layout .......................................................................................................................... 18
10 List of Materials .................................................................................................................................................................. 21
11 Revision History .................................................................................................................................................................. 22
List of Figures
Figure 4-1. TPS53313EVM-078 Schematic................................................................................................................................. 4
Figure 5-1. Tip and Barrel Measurement for VOUT Ripple.......................................................................................................... 5
Figure 5-2. TPS53313EVM-078 Recommended Test Set Up..................................................................................................... 6
Figure 8-1. Efficiency................................................................................................................................................................... 9
Figure 8-2. Load Regulation........................................................................................................................................................ 9
Figure 8-3. Line Regulation....................................................................................................................................................... 10
Figure 8-4. Output Load 0-A to 3-A Transient Under FCCM Mode (12-V VIN, 1.2-V VOUT, f
SW
= 600 kHz)............................ 11
Figure 8-5. Output Load 0-A to 3-A Transient Under Skip Mode (12-V VIN, 1.2-V VOUT, f
SW
= 600 kHz)............................... 11
Figure 8-6. Output Ripple at No Load (12-V VIN, 1.2-V VOUT, 0-A, Skip Mode, f
SW
= 600 kHz)............................................. 12
Figure 8-7. Output Ripple at Full Load (12-V VIN, 1.2-V VOUT, 6-A, Skip Mode, f
SW
= 600 kHz)............................................ 12
Figure 8-8. Switching Node at No Load (12-V VIN, 1.0-V VOUT, 0-A, Skip Mode, f
SW
= 600 kHz).......................................... 13
Figure 8-9. Switching Node at Full Load (12-V VIN, 1.2-V VOUT, 6-A, Skip Mode, f
SW
= 600 kHz)......................................... 13
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SLUU819A – DECEMBER 2011 – REVISED DECEMBER 2021
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TPS53313 Step-Down Converter Evaluation Module User's Guide 1
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