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User's Guide
TPS54232 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
Efficiency............................................................................................................................................................................4
2.3 Output Voltage Load Regulation........................................................................................................................................
2.4 Output Voltage Line Regulation.........................................................................................................................................
Transients..................................................................................................................................................................6
2.6 Loop Characteristics..........................................................................................................................................................
2.7 Output Voltage Ripple........................................................................................................................................................
2.8 Input Voltage Ripple...........................................................................................................................................................
Up.......................................................................................................................................................................8
2.10 Eco-mode Operation........................................................................................................................................................
Layout.........................................................................................................................................................................10
3.1 Layout..............................................................................................................................................................................
Area......................................................................................................................................................11
Materials...........................................................................................................................................12
4.1 Schematic........................................................................................................................................................................
Materials.................................................................................................................................................................13
5 Revision History...................................................................................................................................................................
Figure 2-1. TPS54232EVM-415 Efficiency..................................................................................................................................
Figure 2-3. TPS54232EVM-415 Load Regulation.......................................................................................................................
Figure 2-4. TPS54232EVM-415 Line Regulation........................................................................................................................
Figure 2-5. TPS54232EVM-415 Transient Response.................................................................................................................
Figure 2-6. TPS54232EVM-415 Loop Response........................................................................................................................
Figure 2-7. TPS54232EVM-415 Output Ripple...........................................................................................................................
Figure 2-8. TPS54232EVM-415 Input Ripple..............................................................................................................................
Figure 3-1. TPS54232EVM-415 Top-Side Layout.....................................................................................................................
Figure 3-2. TPS54232EVM-415 Bottom-Side Layout................................................................................................................
Figure 3-3. TPS54232EVM-415 Top-Side Assembly.................................................................................................................
Table 2-1. EVM Connectors and Test Points...............................................................................................................................
Trademarks
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is a trademark of Texas Instruments.
SLVU277A - JANUARY 2009 - REVISED OCTOBER 2021
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Table of Contents
Summary.................................................................................................................................2
List of Figures
Efficiency..............................................................................................................5
IN
Enable....................................................................................................9
Operation...............................................................................................................9
Schematic...............................................................................................................................12
List of Tables
Summary...............................................................................................................2
Available...........................................................................................................................................3
Materials.........................................................................................................................13
Copyright © 2021 Texas Instruments Incorporated
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Summary.........................................................................................2
TPS54232 Step-Down Converter Evaluation Module User's Guide
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Table of Contents
Related Manuals for Texas Instruments TPS54232EVM-415
Summary of Contents for Texas Instruments TPS54232EVM-415
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Page 1: Table Of Contents
Figure 2-4. TPS54232EVM-415 Line Regulation........................Figure 2-5. TPS54232EVM-415 Transient Response......................... Figure 2-6. TPS54232EVM-415 Loop Response........................Figure 2-7. TPS54232EVM-415 Output Ripple........................... Figure 2-8. TPS54232EVM-415 Input Ripple..........................Figure 2-9. TPS54232EVM-415 Start-Up Relative to V ......................Figure 2-10. TPS54232EVM-415 Start-Up Relative to Enable....................9 Figure 2-11. TPS54232EVM-415 Eco-mode Operation.......................9... -
Page 2: Introduction
1 Introduction This user's guide contains background information for the TPS54232 as well as support documentation for the TPS54232EVM-415 evaluation module (HPA415). Also included are the performance specifications, the schematic, and the bill of materials for the TPS54232EVM-415. 1.1 Background The TPS54232 dc/dc converter is designed to provide up to a 2 A output from an input voltage source of 3.5... -
Page 3: Modifications
1.96 2 Test Setup and Results This section describes how to properly connect, set up, and use the TPS54232EVM-415 evaluation module. The section also includes test results typical for the evaluation module and covers efficiency, output voltage regulation, load transients, loop response, output ripple, input ripple, and start-up. -
Page 4: Efficiency
I - Output Current - A Figure 2-1. TPS54232EVM-415 Efficiency Figure 2-2 shows the efficiency for the TPS54232EVM-415 at lower output currents between 0.02 A and 0.20 A at an ambient temperature of 25°C. TPS54232 Step-Down Converter Evaluation Module User's Guide SLVU277A –... -
Page 5: Output Voltage Load Regulation
Figure 2-2. TPS54232EVM-415 Low Current Efficiency The efficiency may be lower at higher ambient temperatures, due to temperature variation in the drain-to-source resistance of the internal MOSFET. 2.3 Output Voltage Load Regulation The load regulation for the TPS54232EVM-415 is shown in Figure 2-3. 0.08 0.06... -
Page 6: Output Voltage Line Regulation
Test Setup and Results www.ti.com 2.4 Output Voltage Line Regulation The line regulation for the TPS54232EVM-415 is shown in Figure 2-4. 0.025 0.02 0.015 0.01 I = 1 A 0.005 -0.005 -0.01 -0.015 -0.02 -0.025 V - Input Voltage - V Figure 2-4. -
Page 7: Loop Characteristics
100k f - Frequency - Hz Figure 2-6. TPS54232EVM-415 Loop Response 2.7 Output Voltage Ripple The TPS54232EVM-415 output voltage ripple is shown in Figure 2-7 . The output current is the rated full load of 2 A and V = 15 V. The ripple voltage is measured directly across the output capacitors. -
Page 8: Input Voltage Ripple
Test Setup and Results www.ti.com 2.8 Input Voltage Ripple The TPS54232EVM-415 input voltage ripple is shown in Figure 2-8 . The output current is the rated full load of 2 A and V = 15 V. The ripple voltage is measured directly across the input capacitors. -
Page 9: Eco-Mode Operation
Test Setup and Results VOUT t - Time - 2 ms/div Figure 2-10. TPS54232EVM-415 Start-Up Relative to Enable 2.10 Eco-mode Operation At light load currents, the TPS54232 is designed to operate in pulse skipping Eco-mode. When the peak inductor current is lower than 100 mA typical, the device enters Eco-mode. -
Page 10: Board Layout
Board Layout www.ti.com 3 Board Layout This section provides a description of the TPS54232EVM-415, board layout, and layer illustrations. 3.1 Layout The board layout for the TPS54232EVM-415 is shown in Figure 3-1 through Figure 3-3. The topside layer of the EVM is laid out in a manner typical of a user application. -
Page 11: Estimated Circuit Area
Board Layout Figure 3-2. TPS54232EVM-415 Bottom-Side Layout Figure 3-3. TPS54232EVM-415 Top-Side Assembly 3.2 Estimated Circuit Area The estimated printed circuit board area for the components used in this design is 0.44 in . This area does not include test point or connectors. -
Page 12: Schematic And Bill Of Materials
Schematic and Bill of Materials www.ti.com 4 Schematic and Bill of Materials This section presents the TPS54232EVM-415 schematic and bill of materials. 4.1 Schematic Figure 4-1 is the schematic for the TPS54232EVM-415. Figure 4-1. TPS54232EVM-415 Schematic TPS54232 Step-Down Converter Evaluation Module User's Guide SLVU277A –... -
Page 13: Bill Of Materials
Schematic and Bill of Materials 4.2 Bill of Materials Table 4-1 presents the bill of materials for the TPS54232EVM-415. Table 4-1. TPS54232EVM-415 Bill of Materials Count RefDes Value Description Size Part Number 4.7 μF Capacitor, Ceramic, 25 V, X5R, 10%... - Page 14 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.
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Page 15: Operation
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 16 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 17 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 18 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 19 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...