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User's Guide
LM27341 Step-Down Converter Evaluation Module User's
Guide
1
Introduction.............................................................................................................................................................................2
2 Evaluation Board Schematic.................................................................................................................................................
3 Powering and Loading Considerations................................................................................................................................
Procedure........................................................................................................................................................4
3.2 Starting Up.........................................................................................................................................................................
3.3 Overcurrent Protection.......................................................................................................................................................
3.4
Synchronization..................................................................................................................................................................4
Voltage..............................................................................................................................................4
Characteristics.................................................................................................................................................5
5 Layout and Bill of Materials...................................................................................................................................................
Layout..............................................................................................................................................................................7
History......................................................................................................................................................................8
Figure 4-1. Conversion Efficiency Versus Output Current...........................................................................................................
Figure 4-2. Output Voltage During a Typical Start-Up Sequence................................................................................................
Figure 6-1. Top Layer and Overlay..............................................................................................................................................
Figure 6-2. Internal Layer 1.........................................................................................................................................................
Figure 6-3. Internal Layer 2.........................................................................................................................................................
Figure 6-4. Bottom Layer.............................................................................................................................................................
Materials............................................................................................................................................................6
Trademarks
All trademarks are the property of their respective owners.
SNVA381B - NOVEMBER 2008 - REVISED DECEMBER 2021
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LM27341 Step-Down Converter Evaluation Module User's Guide
Copyright © 2021 Texas Instruments Incorporated
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Summary of Contents for Texas Instruments LM27341
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Page 1: Table Of Contents
List of Tables Table 5-1. Bill of Materials................................6 Trademarks All trademarks are the property of their respective owners. SNVA381B – NOVEMBER 2008 – REVISED DECEMBER 2021 LM27341 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 2: Introduction
Frequency of operation: 1000 kHz to 2350 kHz • Board size: 1.1 inches × 1.3 inches LM27341 Step-Down Converter Evaluation Module User's Guide SNVA381B – NOVEMBER 2008 – REVISED DECEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 3: Evaluation Board Schematic
Evaluation Board Schematic 2 Evaluation Board Schematic SNVA381B – NOVEMBER 2008 – REVISED DECEMBER 2021 LM27341 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 4: Powering And Loading Considerations
Adjusting the output voltage will affect the performance of the LM27342. In addition, output capacitors might not be rated for the new output voltage. Refer to the LM27342 data sheet for more information. LM27341 Step-Down Converter Evaluation Module User's Guide SNVA381B – NOVEMBER 2008 – REVISED DECEMBER 2021 Submit Document Feedback Copyright ©... -
Page 5: Performance Characteristics
Output Current = 1A Figure 4-2. Output Voltage During a Typical Start-Up Sequence SNVA381B – NOVEMBER 2008 – REVISED DECEMBER 2021 LM27341 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 6: Layout And Bill Of Materials
Connectors VIN, Turret 160-2043-02-01-00 Cambion GND, GND, VOUT, SYNC Test Point Miniature Test Point 5000 Keystone LM27341 Step-Down Converter Evaluation Module User's Guide SNVA381B – NOVEMBER 2008 – REVISED DECEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 7: Pcb Layout
PCB Layout 6 PCB Layout Figure 6-1. Top Layer and Overlay Figure 6-2. Internal Layer 1 SNVA381B – NOVEMBER 2008 – REVISED DECEMBER 2021 LM27341 Step-Down Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 8: Revision History
Updated the numbering format for tables, figures, and cross-references throughout the document....2 • Updated the user's guide title ..........................• Edited user's guide for clarity..........................2 LM27341 Step-Down Converter Evaluation Module User's Guide SNVA381B – NOVEMBER 2008 – REVISED DECEMBER 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 9 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 10 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 11 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 12 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 13 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 14 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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