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User's Guide
TPS5430 and TPS5431 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........................................................................................................................................
Regulation..........................................................................................................................................6
Transients..................................................................................................................................................................7
2.6 Loop Characteristics..........................................................................................................................................................
2.7 Output Voltage Ripple........................................................................................................................................................
2.8 Input Voltage Ripple.........................................................................................................................................................
Up.....................................................................................................................................................................11
Layout.........................................................................................................................................................................12
3.1 Layout..............................................................................................................................................................................
Materials...........................................................................................................................................14
4.1 Schematic........................................................................................................................................................................
Materials.................................................................................................................................................................16
5 Revision History...................................................................................................................................................................
Figure 2-1. TPS5430 Efficiency...................................................................................................................................................
Figure 2-2. TPS5431 Efficiency...................................................................................................................................................
Figure 2-3. TPS5430 Load Regulation........................................................................................................................................
Figure 2-4. TPS5431 Load Regulation........................................................................................................................................
Figure 2-5. TPS5430 Line Regulation.........................................................................................................................................
Figure 2-6. TPS5431 Line Regulation.........................................................................................................................................
Figure 2-8. TPS5431 Transient Response..................................................................................................................................
Figure 2-9. TPS5430 Loop Response.........................................................................................................................................
Figure 2-10. PS5431 Loop Response.........................................................................................................................................
Figure 2-13. TPS5430 Input Ripple...........................................................................................................................................
Figure 2-15. TPS5430 and TPS5431 Start-Up..........................................................................................................................
Figure 3-1. Top-Side Layout......................................................................................................................................................
Figure 3-2. Bottom-Side Layout (Looking From Top Side)........................................................................................................
Assembly..................................................................................................................................................13
Table 2-1. EVM Connectors and Test Points...............................................................................................................................
SLVU157A - MARCH 2006 - REVISED OCTOBER 2021
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Table of Contents
Summary.................................................................................................................................2
List of Figures
Response.....................................................................................................................................7
Ripple...........................................................................................................................................9
Ripple...........................................................................................................................................10
Ripple............................................................................................................................................11
Schematic.................................................................................................................................15
List of Tables
Summary...............................................................................................................2
Available...........................................................................................................................................3
Materials...........................................................................................................................16
Copyright © 2021 Texas Instruments Incorporated
Summary.....................................................2
TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's
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Related Manuals for Texas Instruments TPS5430
Summary of Contents for Texas Instruments TPS5430
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Page 1: Table Of Contents
Available............................3 Table 2-1. EVM Connectors and Test Points..........................Table 4-1. TPS5430EVM-173 Bill of Materials...........................16 SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's Submit Document Feedback Guide Copyright © 2021 Texas Instruments Incorporated... -
Page 2: Introduction
The TPS5430 and TPS5431 dc/dc converters are designed to provide up to a 3-A output from an input voltage source of 5.5 V to 36 V (TPS5430) or 5.5 V to 23 V (TPS5431EVM-173). Rated input voltage and output current range for the evaluation module is given in Table 1-1. -
Page 3: Modifications
1.3 Modifications These evaluation modules are designed to demonstrate the small size that can be attained when designing with the TPS5430 and TPS5431. A few changes can be made to this module. 1.3.1 Output Voltage Set Point To change the output voltage of the EVMs, it is necessary to change the value of resistor R2. Changing the value of R2 can change the output voltage above 1.25 V. -
Page 4: Efficiency
I - Output Current - A Figure 2-1. TPS5430 Efficiency Figure 2-2 shows the efficiency for the TPS5431EVM-173 at an ambient temperature of 25°C. TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 Guide Submit Document Feedback... -
Page 5: Output Voltage Load Regulation
-0.06 -0.08 -0.1 I - Output Current - A Figure 2-3. TPS5430 Load Regulation SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's Submit Document Feedback Guide Copyright © 2021 Texas Instruments Incorporated... -
Page 6: Output Voltage Line Regulation
-0.06 -0.08 -0.1 V - Input Voltage - V Figure 2-5. TPS5430 Line Regulation TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 7: Load Transients
= 50 mV /Div (AC-Coupled) = 1 A/Div Time = 200 µs/Div Figure 2-7. PS5430 Transient Response SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's Submit Document Feedback Guide Copyright © 2021 Texas Instruments Incorporated... -
Page 8: Loop Characteristics
TPS5431EVM-173. Load current for both measurements is 1 A. Phase Gain -180 f - Frequency - Hz Figure 2-9. TPS5430 Loop Response TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 9: Output Voltage Ripple
= 20 mV/Div (AC-Coupled) V = 20 V/Div Time = 1 µs/Div Figure 2-11. TPS5430 Output Ripple SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's Submit Document Feedback Guide Copyright © 2021 Texas Instruments Incorporated... -
Page 10: Input Voltage Ripple
V = 100 mV/Div (AC-Coupled) V = 20 V/Div Time = 1 µs/Div Figure 2-13. TPS5430 Input Ripple TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 11: Powering Up
ENA = 2 V/Div = 2 V/Div Time = 2 ms/Div Figure 2-15. TPS5430 and TPS5431 Start-Up SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's Submit Document Feedback Guide Copyright © 2021 Texas Instruments Incorporated... -
Page 12: Board Layout
The top layer contains the main power traces for VIN, OUT, and VPHASE. Also on the top layer are connections for the remaining pins of the TPS5430 and a large area filled with ground. The bottom layer contains ground and signal routes for the ENA feature. -
Page 13: Figure 3-2. Bottom-Side Layout (Looking From Top Side)
Board Layout Figure 3-2. Bottom-Side Layout (Looking From Top Side) Figure 3-3. Top-Side Assembly SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's Submit Document Feedback Guide Copyright © 2021 Texas Instruments Incorporated... -
Page 14: Schematic And Bill Of Materials
The TPS5430EVM-173 and TPS5431EVM-173 schematic and bill of materials are presented in this section. 4.1 Schematic The schematic for the TPS5430EVM-173 and TPS5431EVM-173is shown in Figure 4-1. TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 15: Figure 4-1. Tps5430Evm-173 Schematic
Schematic and Bill of Materials Figure 4-1. TPS5430EVM-173 Schematic SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's Submit Document Feedback Guide Copyright © 2021 Texas Instruments Incorporated... -
Page 16: Bill Of Materials
Updated the numbering format for tables, figures, and cross-references throughout the document....2 • Updated the user's guide title..........................TPS5430 and TPS5431 Step-Down Converter Evaluation Module User's SLVU157A – MARCH 2006 – REVISED OCTOBER 2021 Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 17 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 18 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 19 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 20 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 21 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 22 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...