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User's Guide
TPS548A20 SWIFT™ Step-Down Converter Evaluation
Module User's Guide
1
Introduction.............................................................................................................................................................................2
2 Description..............................................................................................................................................................................
Applications............................................................................................................................................................3
2.2 Features.............................................................................................................................................................................
3 Electrical Performance Specifications.................................................................................................................................
4
Schematic................................................................................................................................................................................5
Setup................................................................................................................................................................................7
5.1 Test Equipment..................................................................................................................................................................
Setup.................................................................................................................................................8
6 Configurations........................................................................................................................................................................
6.1 Switching Frequency Selection..........................................................................................................................................
6.2 Mode Selection..................................................................................................................................................................
Selection................................................................................................................................................10
7 Test Procedure......................................................................................................................................................................
7.2 Control-Loop Gain and Phase-Measurement Procedure.................................................................................................
7.3 List of Test Points.............................................................................................................................................................
7.4 Equipment Shutdown.......................................................................................................................................................
8 EVM Assembly Drawing and PCB Layout..........................................................................................................................
9 Bill of Materials.....................................................................................................................................................................
10 Revision History.................................................................................................................................................................
Figure 4-1. TPS548A20EVM-737 Schematic..............................................................................................................................
Figure 5-2. TPS548A20EVM-587 Top Layer for Test Setup........................................................................................................
Figure 8-1. TPS548A20EVM-587 Top-Layer Assembly Drawing..............................................................................................
Figure 8-6. TPS548A20EVM-587 Layer Four, Copper..............................................................................................................
Figure 8-7. TPS548A20EVM-587 Layer Five, Copper..............................................................................................................
Figure 8-8. TPS548A20EVM-587 Bottom Layer, Copper..........................................................................................................
Table 4-1. Device Pin-Out Difference Summary..........................................................................................................................
Table 6-2. Mode Selection...........................................................................................................................................................
Table 6-3. Enable Selection.......................................................................................................................................................
Functions..................................................................................................................................................12
Trademarks
™
D-CAP3
is a trademark of TI.
All trademarks are the property of their respective owners.
SLUUBC0A - DECEMBER 2015 - REVISED AUGUST 2021
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Table of Contents
List of Figures
Ripple............................................................................................7
Drawing.........................................................................................13
Copper................................................................................................................14
Copper...............................................................................................................14
Copper............................................................................................................15
List of Tables
Selection...................................................................................................................................9
TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide
Copyright © 2021 Texas Instruments Incorporated
Procedure.................................................................................11
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Table of Contents
Related Manuals for Texas Instruments SWIFT TPS548A20
Summary of Contents for Texas Instruments SWIFT TPS548A20
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Page 1: Table Of Contents
D-CAP3 is a trademark of TI. All trademarks are the property of their respective owners. SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 2: Introduction
15-A synchronous buck-converter with integrated MOSFETs. The device provides a fixed 1.2-V output at up to 15 A from a 12-V input bus. TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 3: Description
Jumper, J7, for extra 5-V input for further power saving purpose • Convenient test points for probing critical waveforms SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 4: Electrical Performance Specifications
88.5 Full load efficiency 86.9 Operating temperature °C Jumpers set to default locations, See Section TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 5: Schematic
Table 4-1. Device Pin-Out Difference Summary PIN NAMES PIN NO. TPS549A20 TPS548A20 ALERT GND1 GND1 SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 6: Figure 4-1. Tps548A20Evm-737 Schematic
PIN 27 GND1 PIN 28 GND2 22µF 22µF 22µF 22µF 22µF Figure 4-1. TPS548A20EVM-737 Schematic TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 7: Test Setup
The minimum recommended wire size is 2× AWG number 14, with the total length of wire less than 4 feet (2 feet output, 2 feet return). SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 8: Recommended Test Setup
2. Connect the voltmeter V2 at TP7 (VOUT) and TP9 (GND) to measure the output voltage. TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 9: Configurations
Auto-skip mode with 1× RC time constant Default setting. The device enters FCCM after PGOOD goes high. SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 10: Vdd Pin Supply Selection
For power-up, input J7 with proper voltage. The VDD pin input voltage range is from 4.5 V to 25 V. TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 11: Test Procedure
7. Disconnect the isolation transformer from the bode-plot test points before making other measurements. • Signal injection into feedback can interfere with the accuracy of other measurements. SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 12: List Of Test Points
Follow these steps when shutting down the equipment. 1. Shut down load 2. Shut down VIN TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 13: Evm Assembly Drawing And Pcb Layout
2-oz copper-circuit board. Figure 8-1. TPS548A20EVM-587 Top-Layer Assembly Drawing Figure 8-2. TPS548A20EVM-587 Bottom-Layer Assembly Drawing SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 14: Figure 8-3. Tps548A20Evm-587 Top Layer
EVM Assembly Drawing and PCB Layout www.ti.com Figure 8-3. TPS548A20EVM-587 Top Layer, Copper Figure 8-4. TPS548A20EVM-587 Layer Two, Copper TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 15: Figure 8-5. Tps548A20Evm-587 Layer Three
EVM Assembly Drawing and PCB Layout Figure 8-5. TPS548A20EVM-587 Layer Three, Copper Figure 8-6. TPS548A20EVM-587 Layer Four, Copper SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 16: Figure 8-7. Tps548A20Evm-587 Layer Five, Copper
EVM Assembly Drawing and PCB Layout www.ti.com Figure 8-7. TPS548A20EVM-587 Layer Five, Copper Figure 8-8. TPS548A20EVM-587 Bottom Layer, Copper TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 17: Bill Of Materials
Test point, black, thru hole color keyed 0.1 × 0.1 inch 5001 Keystone TPS548A20RVE High-performance, 15-A single sync. step-down converter TPS548A20RVE SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 18: Revision History
Updated the numbering format for tables, figures, and cross-references throughout the document....2 • Updated user's guide title........................... TPS548A20 SWIFT™ Step-Down Converter Evaluation Module User's Guide SLUUBC0A – DECEMBER 2015 – REVISED AUGUST 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 19 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 20 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 21 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 22 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 23 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 24 TI products. TI’s provision of these resources does not expand or otherwise alter TI’s applicable warranties or warranty disclaimers for TI products.IMPORTANT NOTICE Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2021, Texas Instruments Incorporated...