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User's Guide
TPS54326 Step-Down Converter Evaluation Module User's
Guide
1
Introduction.............................................................................................................................................................................2
1.1 Background........................................................................................................................................................................
1.3 Modifications......................................................................................................................................................................
2 Test Setup and Results..........................................................................................................................................................
2.1 Input/Output Connections..................................................................................................................................................
2.2 Start Up Procedure............................................................................................................................................................
2.3
Efficiency............................................................................................................................................................................5
2.4 Load Regulation.................................................................................................................................................................
2.5 Line Regulation..................................................................................................................................................................
2.6 Load Transient Response..................................................................................................................................................
2.7 Output Voltage Ripple........................................................................................................................................................
2.8 Input Voltage Ripple...........................................................................................................................................................
2.9 Start Up..............................................................................................................................................................................
Frequency........................................................................................................................................................8
Layout...........................................................................................................................................................................9
3.1 Layout................................................................................................................................................................................
4 Schematic, Bill of Materials and Reference.......................................................................................................................
4.1 Schematic........................................................................................................................................................................
Materials.................................................................................................................................................................14
4.3
Reference.........................................................................................................................................................................14
5 Revision History...................................................................................................................................................................
Figure 2-1. TPS54326EVM-540 Efficiency..................................................................................................................................
Figure 2-2. TPS54326EVM-540 Load Regulation.......................................................................................................................
Figure 2-3. TPS54326EVM-540 Line Regulation........................................................................................................................
Figure 2-4. TPS54326EVM-540 Load Transient Response........................................................................................................
Figure 2-5. TPS54326EVM-540 Output Voltage Ripple..............................................................................................................
Figure 2-6. TPS54326EVM-540 Input Voltage Ripple.................................................................................................................
Figure 2-7. TPS54326EVM-540 Start Up....................................................................................................................................
Figure 3-1. Top Assembly............................................................................................................................................................
Layer.................................................................................................................................................................10
Figure 3-3. Internal Layer 1.......................................................................................................................................................
2........................................................................................................................................................11
Figure 3-5. Bottom Layer...........................................................................................................................................................
Figure 3-6. Bottom Assembly....................................................................................................................................................
Figure 4-1. TPS54326EVM-540 Schematic Diagram................................................................................................................
Table 1-2. TPS54326 EVM and Performance Specifications Summary......................................................................................
Table 1-3. Output Voltages..........................................................................................................................................................
Table 2-1. Connection and Test Points........................................................................................................................................
Materials..........................................................................................................................................................14
Trademarks
D-CAP2
™
is a trademark of Texas Instruments.
SLVU353A - NOVEMBER 2009 - REVISED OCTOBER 2021
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Table of Contents
Summary.................................................................................................................................2
List of Figures
Frequency........................................................................................................................8
List of Tables
Summary...............................................................................................................2
Copyright © 2021 Texas Instruments Incorporated
TPS54326 Step-Down Converter Evaluation Module User's Guide
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Summary of Contents for Texas Instruments TPS54326EVM-540
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Page 1: Table Of Contents
List of Figures Figure 2-1. TPS54326EVM-540 Efficiency..........................Figure 2-2. TPS54326EVM-540 Load Regulation........................Figure 2-3. TPS54326EVM-540 Line Regulation........................Figure 2-4. TPS54326EVM-540 Load Transient Response......................Figure 2-5. TPS54326EVM-540 Output Voltage Ripple......................Figure 2-6. TPS54326EVM-540 Input Voltage Ripple......................... Figure 2-7. TPS54326EVM-540 Start Up............................ -
Page 2: Introduction
All trademarks are the property of their respective owners. 1 Introduction This user’s guide contains background information for the TPS54326 as well as support documentation for the TPS54326EVM-540 evaluation module. Also included are the performance specifications, schematic and the bill of materials for the TPS54326EVM-540. 1.1 Background ™... -
Page 3: Modifications
10 - 47 49.9 22.1 10 - 47 73.2 22.1 10 - 47 22.1 10 - 47 SLVU353A – NOVEMBER 2009 – REVISED OCTOBER 2021 TPS54326 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 4: Test Setup And Results
2 Test Setup and Results This section describes how to properly connect, set up, and use the TPS54326EVM-540. The section also includes test results typical for the evaluation modules and efficiency, output load regulation, output line regulation, load transient response, output voltage ripple, input voltage ripple, start up and switching frequency. -
Page 5: Efficiency
Test Setup and Results 2.3 Efficiency Figure 2-1 shows the efficiency for the TPS54326EVM-540 at an ambient temperature of 25°C. V = 5 V V = 12 V 0.001 0.01 I - Output Current - A Figure 2-1. TPS54326EVM-540 Efficiency 2.4 Load Regulation... -
Page 6: Line Regulation
V - Input Voltage - V Figure 2-3. TPS54326EVM-540 Line Regulation 2.6 Load Transient Response The TPS54326EVM-540 response to load transient is shown in Figure 2-4. The current step is from 0.75 A to 2.25 A (25% to 75% of rated load). Total peak-to-peak output voltage variation is as shown. -
Page 7: Output Voltage Ripple
Test Setup and Results 2.7 Output Voltage Ripple The TPS54326EVM-540 output voltage ripple is shown in Figure 2-5. The output current is the rated full load of V = 50 mV/div (AC Coupled) Switching Node = 5 V/div t - Time = 500 ns/div Figure 2-5. -
Page 8: Start Up
Test Setup and Results www.ti.com 2.9 Start Up The TPS54326EVM-540 start up waveform is shown in Figure 2-7. EN = 10 V/div VOUT = 500 mV/div PG = 5 V/div Time = 500 s/div Figure 2-7. TPS54326EVM-540 Start Up 2.10 Switching Frequency... -
Page 9: Board Layout
Board Layout 3 Board Layout This section provides description of the TPS54326EVM-540, board layout, and layer illustrations. 3.1 Layout The board layout for the TPS54326EVM-540 and is shown in Figure 3-1 through Figure 3-6. The top layer contains the main power traces for VIN, VO and ground. Also on the top layer are connections for the pins of the TPS54326 and a large area filled with ground. -
Page 10: Figure 3-2. Top Layer
Board Layout www.ti.com Figure 3-2. Top Layer Figure 3-3. Internal Layer 1 TPS54326 Step-Down Converter Evaluation Module User's Guide SLVU353A – NOVEMBER 2009 – REVISED OCTOBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 11: Figure 3-4. Internal Layer 2
Board Layout Figure 3-4. Internal Layer 2 Figure 3-5. Bottom Layer SLVU353A – NOVEMBER 2009 – REVISED OCTOBER 2021 TPS54326 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 12: Figure 3-6. Bottom Assembly
Board Layout www.ti.com Figure 3-6. Bottom Assembly TPS54326 Step-Down Converter Evaluation Module User's Guide SLVU353A – NOVEMBER 2009 – REVISED OCTOBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 13: Schematic, Bill Of Materials And Reference
Schematic, Bill of Materials and Reference 4 Schematic, Bill of Materials and Reference This section presents the TPS54326EVM-540 schematic, bill of materials and reference. 4.1 Schematic Figure 4-1 is the schematic for the TPS54326EVM-540. Figure 4-1. TPS54326EVM-540 Schematic Diagram SLVU353A –... -
Page 14: Bill Of Materials
Updated the numbering format for tables, figures, and cross-references throughout the document....2 • Updated the user's guide title ..........................TPS54326 Step-Down Converter Evaluation Module User's Guide SLVU353A – NOVEMBER 2009 – REVISED OCTOBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 15 STANDARD TERMS FOR EVALUATION MODULES Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance with the terms set forth herein.
- Page 16 www.ti.com Regulatory Notices: 3.1 United States 3.1.1 Notice applicable to EVMs not FCC-Approved: FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and software developers to write software applications for use with the end product.
- Page 17 www.ti.com Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à...
- Page 18 www.ti.com EVM Use Restrictions and Warnings: 4.1 EVMS ARE NOT FOR USE IN FUNCTIONAL SAFETY AND/OR SAFETY CRITICAL EVALUATIONS, INCLUDING BUT NOT LIMITED TO EVALUATIONS OF LIFE SUPPORT APPLICATIONS. 4.2 User must read and apply the user guide and other available documentation provided by TI regarding the EVM prior to handling or using the EVM, including without limitation any warning or restriction notices.
- Page 19 Notwithstanding the foregoing, any judgment may be enforced in any United States or foreign court, and TI may seek injunctive relief in any United States or foreign court. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2019, Texas Instruments Incorporated...
- Page 20 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products. TI objects to and rejects any additional or different terms you may have proposed. IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2021, Texas Instruments Incorporated...
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