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User's Guide
TPS25948EVM Evaluation Module for TPS25948 eFuse
This user's guide describes the evaluation module (EVM) for the TPS25948 eFuse. The TPS25948 device is
a 3.5-V to 23-V, 8-A eFuse with integrated 13-mΩ FET with reverse current protection, overcurrent protection,
inrush current protection, adjustable overcurrent transient blanking timer, and programmable undervoltage and
overvoltage protection.
TP1(VIN1), TP14(VIN2), TP2(VOUT1), TP15(VOUT2) are Kelvin-sense test points and not a good
choice for carrying high current. Do not apply power to these test points. Use connectors present on
EVM for applying power.
1
Introduction.............................................................................................................................................................................3
1.1 EVM Features....................................................................................................................................................................
1.2 EVM Applications...............................................................................................................................................................
2 Description..............................................................................................................................................................................
3
Schematic................................................................................................................................................................................4
Configurations..........................................................................................................................................................5
4.1 Physical Access.................................................................................................................................................................
4.2 Test Equipment and Setup.................................................................................................................................................
Procedures....................................................................................................................................................8
Test......................................................................................................................................................................9
Test...............................................................................................................................................................10
Test.......................................................................................................................................................11
5.4 Wakeup into Short Test....................................................................................................................................................
5.5 Overvoltage Test..............................................................................................................................................................
5.6 Priority Power Mux Test...................................................................................................................................................
6 EVAL Board Assembly Drawings and Layout Guidelines................................................................................................
Drawings..................................................................................................................................................................15
(BOM).........................................................................................................................................................17
8 Revision History...................................................................................................................................................................
Figure 3-1. TPS25948EVM eFuse Evaluation Board Schematic................................................................................................
Figure 5-1. TPS25948EVM Setup with Test Equipment..............................................................................................................
Figure 5-2. TPS25948 Output Rise Profile (VIN = 12 V, Cout = 220 µF, CdVdT = OPEN, R
536
Ω......................................................................................................................................................................................12
Figure 5-7. Priority PowerMux Test on
SLVUCK4A - MARCH 2023 - REVISED JULY 2023
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ABSTRACT
Caution
Note
Table of Contents
List of Figures
Device...................................................................................13
TPS25948.....................................................................................................................14
Assembly..............................................................................15
Copyright © 2023 Texas Instruments Incorporated
Hot surface.
Contact can cause burns.
Do not touch!
= 536 Ω, No Load)...................
Setting.........................................................................10
ILM
TPS25948EVM Evaluation Module for TPS25948 eFuse
Table of Contents
3
3
3
5
7
12
13
14
15
20
4
8
9
= 536
Ω..........................11
=
ILM
1
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Table of Contents
Related Manuals for Texas Instruments TPS25948EVM
Summary of Contents for Texas Instruments TPS25948EVM
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Page 1: Table Of Contents
Figure 5-6. Overvoltage Protection Response of the TPS25948 Device...................13 Figure 5-7. Priority PowerMux Test on TPS25948........................14 Figure 6-1. TPS25948EVM Board (a) Top Assembly (b) Bottom Assembly................15 SLVUCK4A – MARCH 2023 – REVISED JULY 2023 TPS25948EVM Evaluation Module for TPS25948 eFuse Submit Document Feedback Copyright ©... - Page 2 Trademarks www.ti.com Figure 6-2. TPS25948EVM Board (a) Top Layer (b) Bottom Layer................... List of Tables Table 2-1. TPS25948EVM eFuse Evaluation Board Options and Setting................... Table 4-1. Input and Output Connector Functionality........................Table 4-2. Test Points Description............................... Table 4-3. Jumper Descriptions and Default Positions........................
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Page 3: Introduction
Adapter and charger input protection 2 Description The TPS25948EVM eFuse evaluation board has two channels and enables evaluation of TPS259480A and TPS259482L eFuses from TPS25948 family. Channels 1 and 2 share a common ground plane and provide option to evaluate power muxing and paralleling capabilities of TPS25948 eFuse. The channels provide programmable OVLO, ITIMER, dVdt, and ILM settings. -
Page 4: Schematic
Schematic www.ti.com 3 Schematic Figure 3-1 illustrates the EVM schematic. Figure 3-1. TPS25948EVM eFuse Evaluation Board Schematic TPS25948EVM Evaluation Module for TPS25948 eFuse SLVUCK4A – MARCH 2023 – REVISED JULY 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated... -
Page 5: General Configurations
General Configurations 4 General Configurations 4.1 Physical Access Table 4-1 lists the TPS25948EVM eFuse evaluation board input and output connector functionality. Table 4-2 Table 4-3 describe the test point availability and the jumper functionality. Table 4-4 describes the function of signal LEDs. -
Page 6: Table 4-3. Jumper Descriptions And Default Positions
2-3 position connects onboard generated voltage, VCC as CH-1,2 reference for digital signals of U1 and U2 TPS25948EVM Evaluation Module for TPS25948 eFuse SLVUCK4A – MARCH 2023 – REVISED JULY 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated... -
Page 7: Test Equipment And Setup
One resistive load or equivalent that can tolerate up to 8-A DC load at 23 V and capable of the output short. SLVUCK4A – MARCH 2023 – REVISED JULY 2023 TPS25948EVM Evaluation Module for TPS25948 eFuse Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated... -
Page 8: Test Setup And Procedures
Test Setup and Procedures www.ti.com 5 Test Setup and Procedures In this user's guide section, the test procedure is described for TPS25948EVM testing. Make sure the evaluation board has default jumper settings as shown in Table 5-1. Table 5-1. Default Jumper Setting for TPS25948EVM eFuse Evaluation Board... -
Page 9: Hot-Plug Test
12 V. Figure 5-2 shows an example of inrush current captured on the TPS25948EVM eFuse evaluation board. Figure 5-2. TPS25948 Output Rise Profile (VIN = 12 V, Cout = 220 µF, CdVdT = OPEN, R = 536 Ω, No... -
Page 10: Overcurrent Test
5. The device allows the overload current for the programmed ITIMER period and then starts limiting current. Figure 5-3 shows an example of the circuit breaker test on the TPS25948EVM. Figure 5-3. Overcurrent Response of TPS25948 for 9-A Current Limit Setting TPS25948EVM Evaluation Module for TPS25948 eFuse SLVUCK4A –... -
Page 11: Output Hot-Short Test
3. Observe the waveforms using an oscilloscope. Figure 5-4 shows test waveform of output Hot-short on the TPS25948EVM eFuse evaluation board. Figure 5-4. Output Hot-Short Response of the TPS25948 Device at Vin = 12 V, Cout = Open, R = 536 Ω... -
Page 12: Wakeup Into Short Test
3. Turn ON the power supply. Figure 5-5 shows test waveform of wakeup into output short on the TPS25948EVM eFuse evaluation board. Figure 5-5. Test Waveform of Wakeup Into Output Short for the TPS25948 Device at Vin = 12 V, Cout = Open, R = 536 Ω... -
Page 13: Overvoltage Test
4. Increase the input supply VIN from 12 V to 15 V and observe the waveforms using an oscilloscope. Figure 5-6 shows overvoltage response of TPS25948 on the TPS25948EVM eFuse evaluation board. Figure 5-6. Overvoltage Protection Response of the TPS25948 Device SLVUCK4A –... -
Page 14: Priority Power Mux Test
Test Waveform of PowerMux configuration when primary voltage = 12 V, secondary voltage = 20 V, and output transitioning from primary to secondary voltage as primary loses power. Figure 5-7. Priority PowerMux Test on TPS25948 TPS25948EVM Evaluation Module for TPS25948 eFuse SLVUCK4A – MARCH 2023 – REVISED JULY 2023 Submit Document Feedback... -
Page 15: Eval Board Assembly Drawings And Layout Guidelines
EVAL Board. Figure 6-2 shows PCB layout images. Figure 6-1. TPS25948EVM Board (a) Top Assembly (b) Bottom Assembly SLVUCK4A – MARCH 2023 – REVISED JULY 2023 TPS25948EVM Evaluation Module for TPS25948 eFuse Submit Document Feedback... - Page 16 EVAL Board Assembly Drawings and Layout Guidelines www.ti.com Figure 6-2. TPS25948EVM Board (a) Top Layer (b) Bottom Layer TPS25948EVM Evaluation Module for TPS25948 eFuse SLVUCK4A – MARCH 2023 – REVISED JULY 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
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Page 17: Bill Of Materials (Bom)
Standoff, Hex, 0.5"L #4-40 Nylon Standoff 1902C Keystone J1, J2, J11, J12 Terminal Block, 2x1, 5.08mm, TH 10.16x15.2x9mm 282841-2 TE Connectivity SLVUCK4A – MARCH 2023 – REVISED JULY 2023 TPS25948EVM Evaluation Module for TPS25948 eFuse Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated... - Page 18 J3, SH-J4, SH-J5, Shunt Solutions SH-J6, SH-J8, SH- J9, SH-J10, SH- J11, SH-J12, SH- J13, SH-J14, SH- J15, SH-J16 TPS25948EVM Evaluation Module for TPS25948 eFuse SLVUCK4A – MARCH 2023 – REVISED JULY 2023 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
- Page 19 0 Ohms Jumper Chip Resistor Wide 1218 RC1218JK-070RL Yageo 1812 (4532 Metric), 1218 Moisture Resistant Thick Film SLVUCK4A – MARCH 2023 – REVISED JULY 2023 TPS25948EVM Evaluation Module for TPS25948 eFuse Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated...
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Page 20: Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision * (March 2023) to Revision A (July 2023) Page • Changed schematic............................• Changed TPS25948EVM Setup with Test Equipment image................8 • Changed Figure 6-1 Figure 6-2 ........................ - 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 © 2023, Texas Instruments Incorporated...
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