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User's Guide
TPS65251 Buck Converter Evaluation Module User's
Guide
1
Introduction.............................................................................................................................................................................2
2
Background.............................................................................................................................................................................3
3
Schematic................................................................................................................................................................................4
Layer)............................................................................................................................................................6
5 Bench Test Setup Conditions................................................................................................................................................
5.2
Jumpers..............................................................................................................................................................................8
Placement.................................................................................................................................................8
6 Power-Up Procedure..............................................................................................................................................................
7 Bill of Materials.....................................................................................................................................................................
History....................................................................................................................................................................11
Trademarks
All trademarks are the property of their respective owners.
SLVU399B - AUGUST 2010 - REVISED MAY 2021
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Copyright © 2021 Texas Instruments Incorporated
TPS65251 Buck Converter Evaluation Module User's Guide
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Summary of Contents for Texas Instruments TPS65251
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Page 1: Table Of Contents
7 Bill of Materials..................................8 Revision History..................................11 Trademarks All trademarks are the property of their respective owners. SLVU399B – AUGUST 2010 – REVISED MAY 2021 TPS65251 Buck Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 2: Introduction
Introduction www.ti.com 1 Introduction This document presents the information required to power the TPS65251 PMIC as well as the support documentation including schematic and bill of materials. TPS65251 Buck Converter Evaluation Module User's Guide SLVU399B – AUGUST 2010 – REVISED MAY 2021 Submit Document Feedback Copyright ©... -
Page 3: Background
2 Background The TPS65251 PMIC is designed to provide 3-A and 2-A continuous outputs with an operational range of 4.5 V to 18 V and an externally set switching frequency ranging from 300 kHz to 2.2 MHz. When the PMIC is not fully loaded, Buck1 can be loaded to 3.5 A and Buck2 and Buck3 to 2.5 A. -
Page 4: Schematic
3 Schematic See next page. The resistor and capacitor values have been chosen according to the guidelines presented on the TPS65251 spec available at http://focus.ti.com/docs/prod/folders/print/tps65251.html. Note that for the purpose of gains-phase measurements R10, R19 and R21 (0 Ω on the EVM) need to be replaced by suitable low value resistors as per the network analyzer setup required. - Page 5 Schematic Figure 3-1. TPS65251 Schematic SLVU399B – AUGUST 2010 – REVISED MAY 2021 TPS65251 Buck Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated...
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Page 6: Placement (Top Layer)
Placement (Top Layer) www.ti.com 4 Placement (Top Layer) Figure 4-1. Placement (Top Layer) TPS65251 Buck Converter Evaluation Module User's Guide SLVU399B – AUGUST 2010 – REVISED MAY 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 7: Bench Test Setup Conditions
Black – GND White – Each output, feed-back, power good and V . All marking on PCB. SLVU399B – AUGUST 2010 – REVISED MAY 2021 TPS65251 Buck Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 8: Jumpers
TP28 V7V pin (internal rail) White TP29 V3V pin (internal rail) White TP33 Input supply White TPS65251 Buck Converter Evaluation Module User's Guide SLVU399B – AUGUST 2010 – REVISED MAY 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 9: Power-Up Procedure
5. For low power and SYNC operation remove the jumpers and connect control supplies as indicated in the bench test setup section. SLVU399B – AUGUST 2010 – REVISED MAY 2021 TPS65251 Buck Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 10: Bill Of Materials
0603 SMD RES 287 kΩ 287 kΩ Panasonic -ECG ERJ-3EKF2873V 1/10 W 1% Resistor 0603 SMD TPS65251 Buck Converter Evaluation Module User's Guide SLVU399B – AUGUST 2010 – REVISED MAY 2021 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... -
Page 11: Revision History
Updated user's guide title........................... • Updated the numbering format for tables, figures, and cross-references throughout the document....2 SLVU399B – AUGUST 2010 – REVISED MAY 2021 TPS65251 Buck Converter Evaluation Module User's Guide Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated... - Page 12 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 13 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 14 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 15 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 16 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 17 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...
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