Texas Instruments TPS51125 User Manual
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Texas Instruments TPS51125 User Manual

Buck controller evaluation module
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User's Guide
TPS51125 Buck Controller Evaluation Module User's
Guide
1
Introduction.............................................................................................................................................................................2
2 Performance Specification Summary...................................................................................................................................
3
Schematic................................................................................................................................................................................3
4 Test Setup and Results..........................................................................................................................................................
5 Configuration..........................................................................................................................................................................
6 Physical Layouts....................................................................................................................................................................
Materials.....................................................................................................................................................................10
8
References.............................................................................................................................................................................11
History....................................................................................................................................................................11
Trademarks
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Out-of-Audio
and D-CAP
All trademarks are the property of their respective owners.
SLUU311B - APRIL 2008 - REVISED JANUARY 2022
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™
are trademarks of Texas Instruments.
Copyright © 2022 Texas Instruments Incorporated
TPS51125 Buck Controller Evaluation Module User's Guide
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Summary of Contents for Texas Instruments TPS51125

  • Page 1: Table Of Contents

    D-CAP are trademarks of Texas Instruments. All trademarks are the property of their respective owners. SLUU311B – APRIL 2008 – REVISED JANUARY 2022 TPS51125 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 2: Introduction

    1 Introduction The TPS51125 is a cost-effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The 270-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the efficiency of the main converter.

  • Page 3: Schematic

    Schematic 3 Schematic Figure 3-1. TPS51125-EVM Schematic Diagram SLUU311B – APRIL 2008 – REVISED JANUARY 2022 TPS51125 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 4: Test Setup And Results

    6. When SW3 stays on and turn on SW1 (ENTRIP1), CH1-output starts up. 7. When SW3 stays on and turn on SW2 (ENTRIP2), CH2-output starts up. TPS51125 Buck Controller Evaluation Module User's Guide SLUU311B – APRIL 2008 – REVISED JANUARY 2022 Submit Document Feedback Copyright ©...
  • Page 5 Figure 4-2. 5-V Start-Up Waveforms Figure 4-5. 3.3-V Load Transient Response Figure 4-4. 5-V Load Transient Response SLUU311B – APRIL 2008 – REVISED JANUARY 2022 TPS51125 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 6: Configuration

    Table 5-3. VLCK Control END CONNECTION VCLK OPEN ENABLED Pull down to GND with 620 kΩ DISABLED TPS51125 Buck Controller Evaluation Module User's Guide SLUU311B – APRIL 2008 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 7: Physical Layouts

    6-2), and inner layer views (Figure 6-3 Figure 6-4) of the EVM. Figure 6-1. Top Layer Routing SLUU311B – APRIL 2008 – REVISED JANUARY 2022 TPS51125 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
  • Page 8 Physical Layouts www.ti.com Figure 6-2. Bottom Layer Routing Figure 6-3. Inner Layer 1 TPS51125 Buck Controller Evaluation Module User's Guide SLUU311B – APRIL 2008 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
  • Page 9 Physical Layouts Figure 6-4. Inner Layer 2 SLUU311B – APRIL 2008 – REVISED JANUARY 2022 TPS51125 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 10: List Of Materials

    0.100 × 0.200 Shunt, 2POs, gold Molex 15-29-1025 inch Standoff M/F hex 4-40 nylon 0.625 in Keystone 4803 TPS51125 Buck Controller Evaluation Module User's Guide SLUU311B – APRIL 2008 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 11: References

    References Table 7-1. TPS51125 List of Materials (continued) RERERENCE DESCRIPTION SIZE PART NUMBER DESIGNATOR Building Nut hex 4-40 nylon NY HN 440 Fasteners 8 References Texas Instruments, TPS51125 Dual-Synchronous Buck Controller data sheet 9 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
  • 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. 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 © 2022, Texas Instruments Incorporated...

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