Texas Instruments TPS51123 User Manual
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Texas Instruments TPS51123 User Manual

Buck controller evaluation module
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User's Guide
TPS51123 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.....................................................................................................................................................................11
8 References............................................................................................................................................................................
9 Revision History...................................................................................................................................................................
SLUU340A - FEBRUARY 2009 - REVISED JANUARY 2022
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Copyright © 2022 Texas Instruments Incorporated
TPS51123 Buck Controller Evaluation Module User's Guide
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Summary of Contents for Texas Instruments TPS51123

  • Page 1: Table Of Contents

    4 Test Setup and Results................................5 Configuration..................................6 Physical Layouts..................................7 List of Materials..................................11 8 References.................................... 9 Revision History................................... SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 TPS51123 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 2: Introduction

    Introduction www.ti.com 1 Introduction The TPS51123 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 TPS51123 supports ™ high-efficiency, fast transient response and provides a combined power-good signal. Out-of-Audio mode light- load operation enables low acoustic noise at much higher efficiency than conventional forced PWM operation.

  • Page 3: Schematic

    Schematic 3 Schematic Figure 3-1. TPS51123-EVM Schematic Diagram SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 TPS51123 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 4: Test Setup And Results

    5. When SW3 stays on, VREF (2V-REF) is enabled. 6. When SW3 stays on and turn on SW4 (ENC), CH1-output, and CH2-output start up. TPS51123 Buck Controller Evaluation Module User's Guide SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 Submit Document Feedback...
  • Page 5 Figure 4-3. 3.3-V Start-Up Waveforms 4.4 Transient Performance Figure 4-5. 3.3-V Load Transient Response Figure 4-4. 5-V Load Transient Response SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 TPS51123 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 6: Configuration

    Table 5-2. Operation Mode Selection SKIPSEL CONNECTION OPERATION MODE Auto skip VREF PWM only VREG5 Out-of-Audio TPS51123 Buck Controller Evaluation Module User's Guide SLUU340A – FEBRUARY 2009 – 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 SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 TPS51123 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 TPS51123 Buck Controller Evaluation Module User's Guide SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
  • Page 9 Physical Layouts Figure 6-3. Inner Layer 1 SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 TPS51123 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
  • Page 10 Physical Layouts www.ti.com Figure 6-4. Inner Layer 2 TPS51123 Buck Controller Evaluation Module User's Guide SLUU340A – FEBRUARY 2009 – REVISED JANUARY 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...

  • Page 11: List Of Materials

    List of Materials 7 List of Materials Table 7-1 provides a list of materials for the TPS51123-EVM. Table 7-1. TPS51123 List of Materials RERERENCE DESCRIPTION SIZE PART NUMBER DESIGNATOR C13, C23 Capacitor, Ceramic, 0.1 μF, 50 V, X5R, 10%...

  • Page 12: References

    0.25 inch NY HN 440 Fasteners 8 References Texas Instruments, TPS51123 Dual-Synchronous, Step-Down Controller with Out-of-Audio™ Operation and 100-mA data sheet 9 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision * (February 2009) to Revision A (January 2022) Page •...
  • Page 13 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 14 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 15 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 16 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 17 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 18 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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