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User's Guide
TPS51124 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..........................................................................................................................................
Selection..................................................................................................................................................6
6 EVM Assembly Drawing and PCB Layout............................................................................................................................
Materials.....................................................................................................................................................................10
8
References.............................................................................................................................................................................11
History....................................................................................................................................................................11
Trademarks
D-CAP
™
is a trademark of Texas Instruments.
All trademarks are the property of their respective owners.
SLUU252B - APRIL 2006 - REVISED MARCH 2022
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Copyright © 2022 Texas Instruments Incorporated
TPS51124 Buck Controller Evaluation Module User's Guide
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Summary of Contents for Texas Instruments TPS51124
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Page 1: Table Of Contents
™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. SLUU252B – APRIL 2006 – REVISED MARCH 2022 TPS51124 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 2: Description
PWM mode at heavy load condition and reduced frequency operation at light load for high efficiency down to milli-ampere range. The main control loop for the TPS51124 uses D-CAP mode that is optimized for low-ESR output capacitors such as POSCAP or SP-CAP promises fast transient response with no external compensation. -
Page 3: Schematic
Schematic 3 Schematic Figure 3-1. TPS51124 EVM Schematic Diagram SLUU252B – APRIL 2006 – REVISED MARCH 2022 TPS51124 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 4: Test Setup And Results
4. Apply appropriate VIN voltage to VIN and VIN_GND terminals. 5. Turn on SW1 (EN1). The CH1-output will start up. 6. Turn on SW2 (EN2). The CH2-output will start up. TPS51124 Buck Controller Evaluation Module User's Guide SLUU252B – APRIL 2006 – REVISED MARCH 2022 Submit Document Feedback... -
Page 5: Start-Up Performance
Figure 4-3. 1.5-V Start-Up Performance 4.4 Transient Performance Figure 4-4. 1.05-V Load Transient Performance Figure 4-5. 1.5-V Load Transient Performance SLUU252B – APRIL 2006 – REVISED MARCH 2022 TPS51124 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 6: Configuration
Frequencies are approximate. 5.2 Bootstrap Diode Selection Bootstrap diodes (D1, D2) are not populated on this EVM since the TPS51124 has them built in. External Schottky diodes can be added in order to further improve the efficiency. TPS51124 Buck Controller Evaluation Module User's Guide SLUU252B –... -
Page 7: Evm Assembly Drawing And Pcb Layout
EVM Assembly Drawing and PCB Layout 6 EVM Assembly Drawing and PCB Layout Figure 6-1. Top Assembly Figure 6-2. Top Layer SLUU252B – APRIL 2006 – REVISED MARCH 2022 TPS51124 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... - Page 8 EVM Assembly Drawing and PCB Layout www.ti.com Figure 6-3. Inner Layer 1 Figure 6-4. Inner Layer 2 TPS51124 Buck Controller Evaluation Module User's Guide SLUU252B – APRIL 2006 – REVISED MARCH 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
- Page 9 EVM Assembly Drawing and PCB Layout Figure 6-5. Bottom Layer SLUU252B – APRIL 2006 – REVISED MARCH 2022 TPS51124 Buck Controller Evaluation Module User's Guide Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated...
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Page 10: List Of Materials
Controller for Low Voltage Power Rails VIN_GND,VIN, Pin,Wiring Terminal 0.09(D) × 0.31 inch MillMax 3183-2-00-15-00- V5IN,V5IN_GND 00-080 TPS51124 Buck Controller Evaluation Module User's Guide SLUU252B – APRIL 2006 – REVISED MARCH 2022 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated... -
Page 11: References
References 8 References Texas Instruments, TPS51124 Dual Synchronous Step-Down Controller for Low Voltage Power Rails Data Sheet 9 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision A (June 2008) 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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