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EVM User's Guide: TPS544B27EVM
TPS544B27EVM 4V to 18V, 20A, Step-Down Converter
Evaluation Module
Description
The TPS544B27EVM is an evaluation module for the
TPS544B27 DC/DC synchronous buck converter with
a digital PMBus
®
and a series voltage identification
(SVID) interface to accommodate Intel
The evaluation module accepts an 8V to 16V input
and can deliver an output current up to 20A. The
converter uses D-CAP+
™
transient response, using less output capacitance to
save board space.
Get Started
1. Order the TPS544B27EVM on ti.com.
2. Download the Fusion GUI software on
FUSION_DIGITAL_POWER_DESIGNER.
SLUUD51 – APRIL 2025
Submit Document Feedback
®
processors.
control scheme for fast
EVM User Interface
Copyright © 2025 Texas Instruments Incorporated
Features
•
Evaluates TPS544B27 using the provided test
points on the EVM
•
Evaluates TPS544B27 configuration and
monitoring using Fusion GUI
Applications
•
Sever and cloud-computing POLs
•
Hardware accelerator
•
Network interface card
•
Broadband, networking, and
•
Wireless infrastructure
TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module
Description
optical module
1
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Related Manuals for Texas Instruments TPS544B27EVM
Summary of Contents for Texas Instruments TPS544B27EVM
- Page 1 Wireless infrastructure 1. Order the TPS544B27EVM on ti.com. 2. Download the Fusion GUI software on FUSION_DIGITAL_POWER_DESIGNER. EVM User Interface SLUUD51 – APRIL 2025 TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 2 1 Evaluation Module Overview 1.1 Introduction The TPS544B27EVM is a configurable, single, output buck converter module. The TPS544B27EVM uses a nominal 12V bus to produce a regulated 1.8V output up to 20A of load current. This user's guide describes the characteristics, operation, and use of TPS544B27EVM.
- Page 3 TPS544B27 device in a buck design. TPS544B27 is designed from a nominal 12V bus to produce a regulated 1.8V output up to 20A of load current. The TPS544B27EVM provides a number of test points to evaluate the performance of the device.
- Page 4 Output J3(1V output) – the minimum recommended wire size is AWG #10, with the total length of wire less than 2 feet (1 foot output, 1 foot return). A thicker wire gauge can be required to minimize the voltage drop the wires. TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module SLUUD51 – APRIL 2025 Submit Document Feedback...
- Page 5 Override internal LDO with external 5V bias for improving efficiency PG PULLUP PGOOD pullup. 2-pin header to pull up PGOOD to VCC SLUUD51 – APRIL 2025 TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 6 VOUT– (GND) 2.4 Control Loop Gain and Phase Measurement The TPS544B27EVM includes a R7 10Ω series resistor in the feedback loop for V . The resistor is accessible at the test points TP14 (BODE_CHA) and TP8 (VOUT/BODE_CHB) for loop response analysis. These test points must be used during loop response measurements as the perturbation injecting points for the loop .
- Page 7 EN signal goes high. 2.6 Input Current Measurement TPS544B27EVM default setting is that input current measurement feature is not used with IN_IN_P and I_IN_M shorted together then shorts to PVIN through J16 shunt on. To test I_IN_P and I_IN_M feature, remove the shunt from J16, connect pin1 of J2 (IIN) to pin2 of J1 (PVIN) with a short 10-AWG wires or better.
- Page 8 Control pin activation and OPERATION command • Margin control • Clear Fault: selecting "Clear Faults" clears any prior fault flags TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module SLUUD51 – APRIL 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 9 Selecting Status from the lower left corner (Figure 3-3) shows the status of the device. Figure 3-3. Status Screen SLUUD51 – APRIL 2025 TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 10 4.1 Performance Data and Typical Characteristics Curves Figure 4-1 through Figure 4-28 present typical performance curves for TPS544B27EVM. The input voltage is 12V, output voltage is 1.8V, unless otherwise noted. Figure 4-1. Efficiency, FCCM, Internal LDO Figure 4-2. Power Dissipation, FCCM, Internal LDO Figure 4-3.
- Page 11 Figure 4-10. Load Regulation, FCCM, External 5V Bias Figure 4-11. Load Regulation, DCM, Internal VCC Figure 4-12. Load Regulation, DCM, External 5V Bias SLUUD51 – APRIL 2025 TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 12 Figure 4-17. Output Voltage Ripple, FCCM, 800kHz, Figure 4-18. Output Voltage Ripple, DCM, 800kHz, 1A Load 1A Load TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module SLUUD51 – APRIL 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 13 FCCM, Internal LDO, 20A Load, No Airflow, Soak FCCM, External 5V Bias, 20A Load, No Airflow, 10 Minutes Soak 10 Minutes SLUUD51 – APRIL 2025 TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 14 FCCM, Internal LDO, 20A Load, No Airflow, Soak FCCM, External 5V Bias, 20A Load, No Airflow, 10 Minutes Soak 10 Minutes TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module SLUUD51 – APRIL 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 15 PGND PGND ¤ 7-8 = PMBus address 71h, Op o n 0 ¥ AGND Figure 5-1. TPS544B27EVM Schematic SLUUD51 – APRIL 2025 TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 16 Figure 5-4. TPS544B27EVM Top Layer Figure 5-5. TPS544B27EVM Layer 2 Figure 5-6. TPS544B27EVM Layer 3 Figure 5-7. TPS544B27EVM Layer 4 TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module SLUUD51 – APRIL 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 17 Hardware Design Files Figure 5-8. TPS544B27EVM Layer 5 Figure 5-9. TPS544B27EVM Bottom Layer SLUUD51 – APRIL 2025 TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 18 J7, J11 HSEC8-110-01-S-DV-A Samtec 0.8mm, 10x2, SMT Header, 2.54mm, Header, 2.54mm, 4x2, Gold, TH TSW-104-08-L-D Samtec 4x2, TH TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module SLUUD51 – APRIL 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 19 Test Point, Miniature, Yellow, TH 5004 TP24 Testpoint0603 Electronics Black Miniature Keystone TP19, TP22 Test Point, Miniature, Black, TH 5001 Testpoint Electronics SLUUD51 – APRIL 2025 TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 20 System Management Interface Forum, Inc.. Intel ® is a registered trademark of Intel. All trademarks are the property of their respective owners. TPS544B27EVM 4V to 18V, 20A, Step-Down Converter Evaluation Module SLUUD51 – APRIL 2025 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated...
- Page 21 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 22 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 23 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 24 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 25 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 26 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 © 2025, Texas Instruments Incorporated...
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