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EVM User's Guide: TPS51385EVM
TPS51385 Step-Down Converter Evaluation Module
Description
The TPS51385 is a single, D-CAP3
synchronous buck converter requiring a very low
external component count. TPS51385EVM is a fully
assembled and tested circuit for evaluating the
TPS51385 converter. This EVM operates typical 12-V
input, and provides a 5.1-V output at 7-A.
SLUUCX3 – AUGUST 2023
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Features
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control mode,
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Applications
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Top View of TPS51385EVM
Copyright © 2023 Texas Instruments Incorporated
4.5-V to 24-V input voltage range
0.6-V to 5.5-V output voltage range
Support 7-A continuous output current
Selectable PSM and OOA mode under light load
Fast load transient response
Notebook and PC computers
Ultrabook, tablet computers
TV
,
STB
Distributed power systems
TPS51385 Step-Down Converter Evaluation Module
Description
1
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Summary of Contents for Texas Instruments TPS51385EVM
- Page 1 4.5-V to 24-V input voltage range synchronous buck converter requiring a very low • 0.6-V to 5.5-V output voltage range external component count. TPS51385EVM is a fully • Support 7-A continuous output current assembled and tested circuit for evaluating the •...
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Page 2: Kit Contents
This user's guide describes the characteristics, operation, and use of the Texas Instruments TPS51385 evaluation module (EVM). The TPS51385EVM is designed to help user easily evaluate and test the operation and functionality of the TPS51385. This user's guide includes the following: •... -
Page 3: Output Voltage Setpoint
Hardware 2 Hardware 2.1 Input and Output Connections The TPS51385EVM is provided with input and output connectors and test points as shown in Table 2-1. Test point TP2 provides a place to monitor the V input voltages with TP9 providing a convenient ground reference. -
Page 4: Test Setup And Results
Implementation Results www.ti.com 3 Implementation Results This section describes how to properly connect, set up, and use the TPS51385EVM. The section also includes test results typical for the evaluation modules. 3.1 Evaluation Setup 1. Make sure that the jumper at JP2 (Enable High Control) is covered to connect VIN to pin 1 of JP3. Also make sure JP3 (Enable Control) pin 2 and 3 are covered to shunt EN to GND to disable the output. - Page 5 VOUT=2V/div PG=5V/div IL=5A/div Figure 3-2. Start-Up Relative to EN, I = 7 A (2ms/div) 3.2.2 Shutdown The following figures show the TPS51385EVM shutdown waveform relative to EN. EN=5V/div VOUT=2V/div PG=5V/div IL=2A/div Figure 3-3. Shutdown Relative to EN, I = 0.1 A (2ms/div)
- Page 6 Implementation Results www.ti.com 3.2.3 Output Voltage Ripple The following images show the TPS51385EVM output voltage ripple. VOUT=20mV/div (AC coupled) SW=5V/div Figure 3-5. TPS51385EVM Output Voltage Ripple, I = 10 mA, PSM Mode (100us/div) VOUT=20mV/div (AC coupled) SW=5V/div Figure 3-6. TPS51385EVM Output Voltage Ripple, I...
- Page 7 Hardware Design Files 4 Hardware Design Files 4.1 Schematic The following image shows the schematic for the TPS51385EVM. Figure 4-1. TPS51385EVM Schematic Diagram SLUUCX3 – AUGUST 2023 TPS51385 Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
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Page 8: Pcb Layout
4.2 PCB Layout The following figures show the board layout for the TPS51385EVM. TPS51385EVM is with four layers. The top layer contains the main power traces for VIN, VOUT, and GND. Also on the top layer are connections for the pins of the TPS51385 and a large area filled with ground. - Page 9 Hardware Design Files Figure 4-4. Inner1 Layer Figure 4-5. Inner2 Layer Figure 4-6. Bottom Layer SLUUCX3 – AUGUST 2023 TPS51385 Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
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Page 10: Bill Of Materials
Hardware Design Files www.ti.com 4.3 Bill of Materials The following table displays the TPS51385EVM bill of materials. Table 4-1. Bill of Materials Designator Description Part Number Manufacturer Samsung Electro- C1, C6 CAP, CERM, 0.1 µF, 25 V, ±10%, X5R, 0603... - Page 11 Additional Information 5 Additional Information Trademarks D-CAP3 ™ is a trademark of Texas Instruments. All trademarks are the property of their respective owners. 6 References For related documentation, see the following: Texas Instruments, TPS51385 4.5-V to 24-V Input, 7-A Synchronous Buck Converter data sheet SLUUCX3 –...
- 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 © 2023, 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 © 2023, Texas Instruments Incorporated...
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Page 18: Texas Instruments
Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments TPS51385EVM...
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