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EVM User's Guide: TPS51388EVM
TPS51388 Step-Down Converter Evaluation Module
Description
The TPS51388EVM is a fully assembled and tested
circuit for evaluating the TPS51388 converter. The
evaluation module is configured to operate from
input voltage range of 5.5V to 24V and produce a
regulated 5.15V output with up to 12A load current.
Most settings of the device can be easily adjusted
or set through jumpers, such as: operation mode
(OOA or ECO), external bypass supply, and switching
frequency.
SLUUD53 – SEPTEMBER 2024
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Features
•
5.5V to 24V input voltage range
•
0.6V to 5.5V output voltage range
•
Support 12A continuous output current
•
Selectable Eco-mode
dynamic change
•
600kHz and 1MHz selectable switching frequency
•
Fast load transient response
Applications
•
Notebook and PC computers
•
Ultrabook, tablet computers
•
TV,
•
Distributed power systems
Copyright © 2024 Texas Instruments Incorporated
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TPS51388 Step-Down Converter Evaluation Module
Description
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Summary of Contents for Texas Instruments TPS51388EVM
- Page 1 Description EVM User's Guide: TPS51388EVM TPS51388 Step-Down Converter Evaluation Module Description Features The TPS51388EVM is a fully assembled and tested • 5.5V to 24V input voltage range circuit for evaluating the TPS51388 converter. The • 0.6V to 5.5V output voltage range evaluation module is configured to operate from •...
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Page 2: Kit Contents
This user's guide describes the characteristics, operation, performance, and use of the Texas Instruments' TPS51388 evaluation module (EVM). The TPS51388EVM is designed to help user easily evaluate and test the operation and functionality of the TPS51388. This user's guide includes the following: •... -
Page 3: Device Information
Table 1-2. Input Voltage and Output Current Summary Input Voltage (V ) Range Output Current (I ) Range TPS51388EVM 5.5V to 24V 0A to 12A SLUUD53 – SEPTEMBER 2024 TPS51388 Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... - Page 4 Internal 5V LDO output. Power supply for internal analog circuits and driving. Enable input of buck converter MODE Mode selection pin BODE Injection point for loop response TPS51388 Step-Down Converter Evaluation Module SLUUD53 – SEPTEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 5 8. Decrease load to 0A. Decrease input source voltage to 0V. Decrease EN source voltage to 0V. SLUUD53 – SEPTEMBER 2024 TPS51388 Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 6 Implementation Results www.ti.com 3 Implementation Results 3.1 Performance Data and Results The typical performance curves for the TPS51388EVM are shown in Figure 3-1 through Figure 3-10. Since the actual performance data can be affected by measurement techniques and environmental variables, these curves are presented for reference and can differ from actual field measurements.
- Page 7 Implementation Results 3.1.3 Operating Waveforms 3.1.3.1 Start-Up and Shutdown with EN The following figures show the TPS51388EVM start-up and shutdown waveforms relative to EN. EN = 2V/div Vout = 2V/div IL = 5A/div 800us/div Figure 3-3. Start-Up Relative to EN, V = 19.5V, I...
- Page 8 Implementation Results www.ti.com 3.1.3.2 Start-Up with VIN The TPS51388EVM start-up waveform relative to VIN is shown in Figure 3-5. Vin = 10V/div Vout = 2V/div IL = 5A/div 2ms/div Figure 3-5. Start-Up Relative to VIN, V = 3.3V, I = 12A 3.1.3.3 Load Transient Response...
- Page 9 2ms/div Figure 3-7. Load Transient Response, V = 19.5V, V = 3.3V, 1.2A to 10.8A at 1.6A/µs 3.1.3.4 Output Voltage Ripple The TPS51388EVM output voltage ripple is shown in Figure 3-8 Figure 3-9. Vout = 20mV/div (AC coupled) SW = 10V/div 10us/div Figure 3-8.
- Page 10 Implementation Results www.ti.com Vout = 20mV/div (AC coupled) SW = 10V/div 1us/div Figure 3-9. TPS51388EVM Output Voltage Ripple, I = 12A 3.1.4 Thermal Performance The thermal performance image is shown in Figure 3-10. Figure 3-10. Thermal Performance, V = 19.5V, I = 12A, T = 25°C, No Airflow...
- Page 11 BYP pin is an external 5V VCC input and can connect to the output of the buck regulator if the output voltage is set between 4.8V to 5.2V. In the TPS51388EVM, since the output voltage is 5.15V, connect BYP to the output voltage through JP5.
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Page 12: Pcb Layout
Hardware Design Files www.ti.com 4.2 PCB Layout The design of the TPS51388EVM using a four-layer PCB with 2-oz copper thickness is shown in Figure 4-2 through Figure 4-5. Figure 4-2. Top Copper (Top View) Figure 4-3. Layer 2 Copper (Top View) Figure 4-4. - Page 13 Hardware Design Files 4.2.1 Multi-Layer Stackup Figure 4-6. Layer Stackup 4.2.2 Component Drawings Figure 4-7. Top Component Drawing Figure 4-8. Bottom Component Drawing SLUUD53 – SEPTEMBER 2024 TPS51388 Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
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Page 14: Bill Of Materials
Hardware Design Files www.ti.com 4.3 Bill of Materials The TPS51388EVM bill of materials is shown in Table 4-1. Table 4-1. Bill of Materials Designator Description Part Number Manufacturer !PCB1 Printed Circuit Board SR091 C1, C5, C10 CAP, CERM, 0.1µF, 50V, ±10%, X7R, 0603... -
Page 15: Compliance Information
Compliance Information 5 Compliance Information 5.1 Compliance and Certifications • TPS51388EVM EU Declaration of Conformity (DoC) for Restricting the use of Hazardous Substances (RoHS) 6 Additional Information 6.1 Trademarks Eco-mode ™ , OOA ™ , and D-CAP3 ™ are trademarks of Texas Instruments. - Page 16 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 17 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 18 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 19 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 20 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 21 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 © 2024, Texas Instruments Incorporated...
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