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EVM User's Guide: TPS54538EVM
TPS54538 Step-Down Converter Evaluation Module
Description
The TPS54538EVM is a fully assembled and tested
circuit for evaluating the TPS54538 converter. The
evaluation module is configured to operate from input
voltage range of 3.8V to 28V and produce a regulated
5.0V output with up to 5A load current. Most settings
of the device can be easily adjusted or set through
jumpers, such as: operation mode, soft start time and
switching frequency.
SLUUCZ5 – DECEMBER 2024
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Features
•
3.8V to 28V input voltage range
•
0.6V to 22V output voltage range
•
Support 5A continuous output current
•
Selectable Eco-mode
•
Adjustable switching frequency
•
Easy to use and small solution size
Applications
•
Medical and healthcare, building automation, test
and measurement
•
Multifucntion printers,enterprise projectors
•
Portable electronics,connected peripherals
•
Wired networking, wireless infrastructure
Copyright © 2024 Texas Instruments Incorporated
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and FCCM
TPS54538 Step-Down Converter Evaluation Module
Description
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Table of Contents
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Related Manuals for Texas Instruments TPS54538
Summary of Contents for Texas Instruments TPS54538
- Page 1 Description Features The TPS54538EVM is a fully assembled and tested • 3.8V to 28V input voltage range circuit for evaluating the TPS54538 converter. The • 0.6V to 22V output voltage range evaluation module is configured to operate from input •...
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Page 2: Kit Contents
LSOC Low-side peak current limit 1.4 Device Information The TPS54538 evaluation module (EVM) is a single, synchronous buck converter providing 5.0V at 5A from a 5.5V to 28V input. Table 1-2. Input Voltage and Output Current Summary Input Voltage (V... - Page 3 Connect (PIN-1 to PIN-2) of J3 and (PIN-2 to PIN-3) of J4 can disable the converter. Header (J5) When Power-Good mode selected, connecting (PIN-1 to PIN-2) of J5 for PG pin connected to pullup voltage. SLUUCZ5 – DECEMBER 2024 TPS54538 Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 4 6. Set the load current to 2.5A (50% rated load) and vary the input source voltage from 5.5V to 28V; V must remain within the line regulation specification. 7. Decrease load to 0A. Decrease input source voltage to 0V. TPS54538 Step-Down Converter Evaluation Module SLUUCZ5 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 5 CCM operation 2200 Modulation frequency,F Spread of internal oscillator with Spread Spectrum ±8% Enabled, f SPREAD TPS54538 operating junction temperature, T –40 °C SLUUCZ5 – DECEMBER 2024 TPS54538 Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 6 Implementation Results www.ti.com 3.1.2 Conversion Efficiency Figure 3-1. Efficiency, ECO mode, V = 5.0V, 500kHz TPS54538 Step-Down Converter Evaluation Module SLUUCZ5 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 7 Figure 3-2. Start-Up Relative to EN, V = 24V, I = 5A Figure 3-3. Shutdown Relative to EN, V = 24V, I = 5A SLUUCZ5 – DECEMBER 2024 TPS54538 Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 8 The TPS54538EVM load transient response is shown in Figure 3-5. Figure 3-5. Load Transient Response, V = 24V, 0.5A to 4.5A at 1.6A/µs TPS54538 Step-Down Converter Evaluation Module SLUUCZ5 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 9 Figure 3-6 Figure 3-7. Figure 3-6. TPS54538EVM Output Voltage Ripple, I = 0A, Eco-mode Figure 3-7. TPS54538EVM Output Voltage Ripple, I = 5A SLUUCZ5 – DECEMBER 2024 TPS54538 Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 10 The thermal performance image is shown in Figure 3-8. Figure 3-8. Thermal Performance, V = 24V, I = 5A, T = 25°C, No Airflow TPS54538 Step-Down Converter Evaluation Module SLUUCZ5 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated...
- Page 11 The default operating frequency of TPS54538EVM is 500kHz with RT resistor(R10) float, and default mode is ECO, external soft start, spread spectrum. If another frequency or mode is needed, then refer to related description of RT and mode in the TPS54538 3.8V to 28V, 5A, 4A, 3A, Synchronous Buck Converters data sheet.
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Page 12: Pcb Layout
Figure 4-2. Top Copper (Top View) Figure 4-3. Layer 2 Copper (Top View) Figure 4-5. Bottom Copper (Top View) Figure 4-4. Layer 3 Copper (Top View) TPS54538 Step-Down Converter Evaluation Module SLUUCZ5 – DECEMBER 2024 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... -
Page 13: Bill Of Materials
Wurth Elektronik 1.2µH Shielded Molded Inductor 5.8A 18mOhm Max 2-SMD 744316220 Wurth Electronics R6, R7 RES, 0.51, 1%, 0.25 W, 0805 CRM0805-FX-R510ELF Bourns SLUUCZ5 – DECEMBER 2024 TPS54538 Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated... -
Page 14: Additional Information
All trademarks are the property of their respective owners. 7 Related Documentation For related documentation, see the following: • Texas Instruments, TPS54538 3.8V to 28V, 5A, 4A, 3A, Synchronous Buck Converters, data sheet TPS54538 Step-Down Converter Evaluation Module SLUUCZ5 – DECEMBER 2024 Submit Document Feedback... - Page 15 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 16 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 17 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 18 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 19 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 20 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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