Table of Contents
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User's Guide
TPS51120 Buck Controller Evaluation Module User's
Guide
1 Description..............................................................................................................................................................................
Performance...........................................................................................................................................................2
3
Schematic................................................................................................................................................................................3
4 Test Setup and Results..........................................................................................................................................................
4.1 Test Setup..........................................................................................................................................................................
4.2 Test Procedure...................................................................................................................................................................
4.3 Start-Up Performance........................................................................................................................................................
Performance.......................................................................................................................................................5
5 Configuration..........................................................................................................................................................................
5.1 Switching Frequency Selection..........................................................................................................................................
5.3 Output Voltage Setting Selection.......................................................................................................................................
Selection..................................................................................................................................................6
6 EVM Assembly Drawing and PCB Layout............................................................................................................................
Materials.....................................................................................................................................................................11
8
References.............................................................................................................................................................................11
History....................................................................................................................................................................11
Trademarks
D-CAP
™
is a trademark of Texas Instruments.
All trademarks are the property of their respective owners.
SLUU240B - JANUARY 2006 - REVISED MARCH 2022
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Table of Contents
Selection............................................................................................................................6
Copyright © 2022 Texas Instruments Incorporated
TPS51120 Buck Controller Evaluation Module User's Guide
Table of Contents
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Summary of Contents for Texas Instruments TPS51120
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Page 1: Table Of Contents
™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. SLUU240B – JANUARY 2006 – REVISED MARCH 2022 TPS51120 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 2: Description
1 Description The TPS51120 is a highly sophisticated dual current mode synchronous step-down controller. It is a full-featured controller designed to run directly off three to four-cell Li-ion battery and provide high power and 5-V, 3.3-V, or both, standby regulation for all the downstream circuitry in a notebook computer system. High current, 100-mA, 5-V, or 3.3-V on-board linear regulators have glitch-free switch over function to SMPS and can be kept alive... -
Page 3: Schematic
Schematic 3 Schematic Figure 3-1. TPS51120 EVM Schematic Diagram SLUU240B – JANUARY 2006 – REVISED MARCH 2022 TPS51120 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 4: Test Setup And Results
7. When SW3 and SW4 stay on and turn on SW1 (EN1), CH1-output will start up. 8. When SW3 and SW4 stay on and turn on SW2 (EN2), CH2-output will start up. TPS51120 Buck Controller Evaluation Module User's Guide SLUU240B – JANUARY 2006 – REVISED MARCH 2022 Submit Document Feedback Copyright ©... -
Page 5: Start-Up Performance
Figure 4-2. 5-V Start-Up Waveforms 4.4 Transient Performance Figure 4-4. 5-V Load Transient Response Figure 4-5. 3.3-V Load Transient Response SLUU240B – JANUARY 2006 – REVISED MARCH 2022 TPS51120 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 6: Configuration
When current mode is selected, please add appropriate parts on C9, C11, and R14 and cut the trace between the pads of R12. Table 5-6. Control Scheme Selection (CH2) D-CAP mode Shorted Open Open Open TPS51120 Buck Controller Evaluation Module User's Guide SLUU240B – JANUARY 2006 – REVISED MARCH 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... - Page 7 When current mode is selected, please add appropriate parts on C15, C14, and R20 and cut the trace between the pads of R24. SLUU240B – JANUARY 2006 – REVISED MARCH 2022 TPS51120 Buck Controller Evaluation Module User's Guide Submit Document Feedback...
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Page 8: Evm Assembly Drawing And Pcb Layout
6 EVM Assembly Drawing and PCB Layout Figure 6-1. Top Assembly Figure 6-2. Bottom Assembly TPS51120 Buck Controller Evaluation Module User's Guide SLUU240B – JANUARY 2006 – REVISED MARCH 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... - Page 9 EVM Assembly Drawing and PCB Layout Figure 6-3. Top Layer Figure 6-4. Inner Layer 1 SLUU240B – JANUARY 2006 – REVISED MARCH 2022 TPS51120 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
- Page 10 EVM Assembly Drawing and PCB Layout www.ti.com Figure 6-5. Inner Layer 2 Figure 6-6. Bottom Layer TPS51120 Buck Controller Evaluation Module User's Guide SLUU240B – JANUARY 2006 – REVISED MARCH 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
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Page 11: List Of Materials
WT-3-1 VBAT_GND1,VBAT1 8 References Texas Instruments, TPS51120 Dual Current Mode, Synchronous Step-Down Controller data sheet 9 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision A (February 2006) to Revision B (March 2022) Page •... - 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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