Texas Instruments TPS25846-Q1 Manual de usuario

SLVUBV7–May 2020

TPS25846-Q1 Evaluation Module

User's Guide

SLVUBV7–May 2020

TPS25846-Q1 Evaluation Module

This user's guide describes the TPS25846-Q1 evaluation module (TPS25846Q1EVM-117). This document

contains the EVM schematics, EVM configuration, bill of materials (BOM), board layout drawing, and

assembly drawing.

Contents

1 Introduction ................................................................................................................... 2

2 Test Setup and Results..................................................................................................... 2

3 Board Layout ................................................................................................................. 4

4 Schematic and Bill of Materials ............................................................................................ 7

List of Figures

1 EVM Setup for Charging USB Type-A Device .......................................................................... 2

2 Top Side Assembly.......................................................................................................... 4

3 Bottom Side Assembly...................................................................................................... 4

4 Top Layer Layout............................................................................................................ 5

5 Middle Layer 1 Layout ...................................................................................................... 5

6 Middle Layer 2 Layout ...................................................................................................... 6

7 Bottom Layer Layout ........................................................................................................ 6

8 TPS25846Q1EVM-117 Schematic ........................................................................................ 7

List of Tables

1 Connectors ................................................................................................................... 3

2 Jumpers....................................................................................................................... 3

3 LED............................................................................................................................ 3

4 Test Points.................................................................................................................... 3

5 Bill of Materials............................................................................................................... 8

Trademarks

All other trademarks are the property of their respective owners.

Introduction

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1 Introduction

The TPS25846Q1EVM-117 is an evaluation module (EVM) for TI's TPS25846-Q1 USB BC1.2 5-V, 3.5-A

output, 36-V input synchronous buck with cable compensation. The EVM operates over a range from 6 V

to 36 V and provides USB type A connectors to evaluate USB BC1.2 and USB2.0 data communication

functions. The value of cable compensation, current limit, and switching frequency can be adjusted by

resistors on the EVM.

1.1 Features

The following features are available on this EVM:

• 6-V to 36-V input range, 3.5-A continuous output current buck converter

• Forced PWM operation with spread-spectrum dithering

• Fully AEC-Q100 qualified

• ±8% Current sense accuracy (IOUT > 1.5 A) for precision cable droop compensation

• USB battery charging specification Rev. 1.2 compliant

• D+ and D– Short-to-VBAT, and VBUS protection

• User-programmable VBUS current limit

1.2 Applications

The EVM is used in the following applications:

• Automotive: Infotainment, USB hubs, aftermarket USB chargers

2 Test Setup and Results

Figure 1 shows the EVM board. Connect J1 to the 13.5-V power supply. Connect USB Type-A device to

J3 connector.

Figure 1. EVM Setup for Charging USB Type-A Device

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Test Setup and Results

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TPS25846-Q1 Evaluation Module

2.1 Physical Access

Table 1 lists the TPS25846Q1EVM-117 connector functionality, Table 2 describes the jumper

configuration, Table 3 shows LED labels and description, and Table 4 describes the test point availability.

Table 1. Connectors

Connector Component Type Description

J1 Terminal block Power input connector for TPS25846-Q1. Connect to a 6-V to 36-V power supply.

J2 USB Type-A connector, plug Upstream facing USB 2.0 Type A connector. Connect to the USB 2.0 host for data

pass through to J7. The power pin of this connector is float.

J3 USB Type-A connector,

receptacle Downstream facing USB Type-A connector. Connect to the USB Type-A slave for

data pass through from J2 and BC1.2 identification.

Table 2. Jumpers

Jumper Label Description

J4 CTRL1 Install shunt to select CTRL1 as LOW. Remove shunt to select CTRL1 as HIGH.

CTRL2 Install shunt to select CTRL2 as LOW. Remove shunt to select CTRL2 as HIGH.

Table 3. LED

LED Label Description

D2 FAULT FAULT signal LED. Turn on when FAULT asserts.

Table 4. Test Points

Test Point Label Description

TP1 VCC VCC pin test point via R1

TP2 CSN(VOUT) CSN pin test point and DC/DC output test point

TP3 CSP Test point of CSP pin

TP4 VIN VIN pin test point

TP5 EN EN pin test point or external EN input

TP6 RT RT pin test point or external clock input

TP7 VBUS USB Type-A VBUS test point

TP8, TP9,TP10,TP11 GND Power ground test point

TP12 FLT FAULT pin test point

Board Layout

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3 Board Layout

Figure 2 and Figure 3 show the top and bottom assembly. Figure 4 to Figure 7 show the layout of the

EVM.

Figure 2. Top Side Assembly

Figure 3. Bottom Side Assembly

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Board Layout

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TPS25846-Q1 Evaluation Module

Figure 4. Top Layer Layout

Figure 5. Middle Layer 1 Layout

Board Layout

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Figure 6. Middle Layer 2 Layout

Figure 7. Bottom Layer Layout

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Schematic and Bill of Materials

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TPS25846-Q1 Evaluation Module

4 Schematic and Bill of Materials

4.1 Schematic

Figure 8 illustrates the EVM schematic.

Figure 8. TPS25846Q1EVM-117 Schematic

Schematic and Bill of Materials

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4.2 Bill of Materials

Table 5 shows the EVM bill of materials.

Table 5. Bill of Materials

Designator QTY Value Description Package Reference Part Number Manufacturer

!PCB1 1 Printed Circuit Board PSIL117 Any

C2, C4, C5, C16 4 0.1uF CAP, CERM, 0.1 µF, 50 V,+/- 10%, X7R, AEC-Q200 Grade 1, 0603 0603 C0603C104K5RACAUTO Kemet

C3 1 2.2uF CAP, CERM, 2.2 uF, 16 V, ±20%, X5R, 0603 0603 885012106018 Wurth Elektronik

C6, C7, C8 3 22uF CAP, CERM, 22 µF, 25 V, ±10%, X7R, 1210 1210 CL32B226KAJNFNE Samsung Electro-

Mechanics

C11 1 10uF CAP, CERM, 10 µF, 50 V, ±20%, X7R, AEC-Q200 Grade 1, 1210 1210 UMJ325KB7106MMHP Taiyo Yuden

C12 1 0.1uF CAP, CERM, 0.1 µF, 50 V, ±5%, C0G/NP0, 1210 1210 C3225C0G1H104J250AA TDK

C14 1 0.22uF CAP, CERM, 0.22 µF, 16 V, ±10%, X7R, AEC-Q200 Grade 1, 0603 0603 CL10B224KO8VPNC Samsung

C15 1 10uF CAP, CERM, 10 µF, 16 V, ±10%, X6S, 0805 0805 GRM21BC81C106KA73L MuRata

C17,C18 2 6pF 6pF ±0.5pF 50V Ceramic Capacitor C0G,NP0 0402 (1005 Metric) 0402 'GCM1555C1H6R0DA16J MuRata

D2 1 Super Red LED, Super Red, SMD LED_0603 150060SS75000 Wurth Elektronik

J1 1 Terminal Block, 5.08 mm, 2x1, TH 2POS Terminal Block 1715721 Phoenix Contact

J2 1 Connector, Plug, USB Type A, R/A, Top Mount SMT USB 2.0, SMT Plug,

18.65x4.5x12mm 931 Keystone

J3 1 Connector, Receptacle, USB TYPE A, R/A, Top Mount SMT USB TYPE A CONNECTOR

RECEPTACLE 4POS SMD 896-43-004-00-000000 Mill-Max

J4 1 Header, 2.54mm, 2x2, Gold, TH Header, 2.54mm, 2x2, TH PBC02DAAN Sullins Connector

Solutions

L1 1 8.2uH 'Inductor, Shielded, Hyperflux, 8.2 µH, 5.3 A, 0.0253 ohm, SMD 8.8x8.3mm '74439346082 Wurth Elektronik

L2,L3 2 15nH 'LQG15WZ15NG02D 0402 'LQG15WZ15NG02D 'MuRata

Q1 1 20V MOSFET, 2-CH, N-CH, 20 V, 12 A, DPA0008A (VSON-8) DPA0008A CSD85312Q3E Texas Instruments

R1 1 0.01 RES, 0.01, 1%, 0.1 W, 0603 0603 WSL0603R0100FEA Vishay-Dale

R3, R9, R13 3 0 RES, 0, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 RMCF0603ZT0R00 Stackpole Electronics

Inc

R4 1 0.015 RES, 0.015, 1%, 0.5 W, 2010 2010 WSL2010R0150FEA Vishay-Dale

R5, R7 2 20k RES, 20 k, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 CRCW060320K0JNEA Vishay-Dale

R6 1 301 RES, 301, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 CRCW0603301RFKEA Vishay-Dale

R10 1 10.0 RES, 10.0, 1%, 0.125 W, AEC-Q200 Grade 0, 0805 0805 CRCW080510R0FKEA Vishay-Dale

R11 1 49.9k RES, 49.9 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 CRCW060349K9FKEA Vishay-Dale

R14, R15 2 5.62k RES, 5.62 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 CRCW06035K62FKEA Vishay-Dale

R16, R17 2 100k RES, 100 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 CRCW0603100KFKEA Vishay-Dale

R18 1 10k RES, 10 k, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 CRCW060310K0JNEA Vishay-Dale

R19, R20 2 15k RES, 15.0 k, 1%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 CRCW060315K0FKEA Vishay-Dale

R21 1 5.1k RES, 5.1 k, 5%, 0.1 W, AEC-Q200 Grade 0, 0603 0603 CRCW06035K10JNEA Vishay-Dale

SH-J1 1 Shunt, 2.54mm, Gold, Black Shunt, 2.54mm, Black 60900213421 Wurth Elektronik

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Schematic and Bill of Materials

SLVUBV7–May 2020

TPS25846-Q1 Evaluation Module

Table 5. Bill of Materials (continued)

Designator QTY Value Description Package Reference Part Number Manufacturer

TP1, TP2, TP3, TP4, TP5,

TP6, TP7, TP12 8 Test Point, Miniature, SMT Testpoint_Keystone_Miniatu

re 5015 Keystone

TP8, TP9, TP10, TP11 4 Test Point, Compact, SMT Testpoint_Keystone_Compa

ct 50156 Keystone

U1 1 USB Type-A BC1.2 5-V 3.5-A Output, 36-V Input Synchronous Buck

With Cable Compensation, RHB0032R (VQFN-32) RHB0032R TPS25846QWRHBTQ1 Texas Instruments

C1 0 1000pF CAP, CERM, 1000 pF, 100 V, ±10%, X7R, 0805 0805 C0805C102K1RACTU Kemet

C9, C10 0 10uF CAP, CERM, 10 µF, 50 V, ±20%, X7R, AEC-Q200 Grade 1, 1210 1210 UMJ325KB7106MMHP Taiyo Yuden

C13 0 0.1uF CAP, CERM, 0.1 µF, 50 V, ±10%, X7R, AEC-Q200 Grade 1, 0603 0603 C0603C104K5RACAUTO Kemet

D1 0 18V Diode, TVS, Uni, 18 V, 29.2 Vc, 400 W, 13.7 A, AEC-Q101, SMA SMA SZ1SMA18AT3G Littelfuse

FID1, FID2, FID3, FID4,

FID5, FID6 0 Fiducial mark. There is nothing to buy or mount. N/A N/A N/A

R2 0 2.0 RES, 2.0, 5%, 0.25 W, AEC-Q200 Grade 0, 1206 1206 CRCW12062R00JNEA Vishay-Dale

R8, R12 0 0 RES, 0, 1%, 0.5 W, 1206 1206 5108 Keystone

STANDARD TERMS FOR EVALUATION MODULES

1. 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. User's acceptance of the EVM is expressly subject to the following terms.

1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility

evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not

finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For

clarification, any software or software tools provided with the EVM (“Software”) shall not be subject to the terms and conditions

set forth herein but rather shall be subject to the applicable terms that accompany such Software

1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned,

or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production

system.

2Limited Warranty and Related Remedies/Disclaimers:

2.1 These terms do not apply to Software. The warranty, if any, for Software is covered in the applicable Software License

Agreement.

2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM

to User. Notwithstanding the foregoing, TI shall not be liable for a nonconforming EVM if (a) the nonconformity was caused by

neglect, misuse or mistreatment by an entity other than TI, including improper installation or testing, or for any EVMs that have

been altered or modified in any way by an entity other than TI, (b) the nonconformity resulted from User's design, specifications

or instructions for such EVMs or improper system design, or (c) User has not paid on time. Testing and other quality control

techniques are used to the extent TI deems necessary. TI does not test all parameters of each EVM.

User's claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects in the EVMs within ten (10)

business days after delivery, or of any hidden defects with ten (10) business days after the defect has been detected.

2.3 TI's sole liability shall be at its option to repair or replace EVMs that fail to conform to the warranty set forth above, or credit

User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the warranty

period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to repair or

replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall be

warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day

warranty period.

WARNING

Evaluation Kits are intended solely for use by technically qualified,

professional electronics experts who are familiar with the dangers

and application risks associated with handling electrical mechanical

components, systems, and subsystems.

User shall operate the Evaluation Kit within TI’s recommended

guidelines and any applicable legal or environmental requirements

as well as reasonable and customary safeguards. Failure to set up

and/or operate the Evaluation Kit within TI’s recommended

guidelines may result in personal injury or death or property

damage. Proper set up entails following TI’s instructions for

electrical ratings of interface circuits such as input, output and

electrical loads.

NOTE:

EXPOSURE TO ELECTROSTATIC DISCHARGE (ESD) MAY CAUSE DEGREDATION OR FAILURE OF THE EVALUATION

KIT; TI RECOMMENDS STORAGE OF THE EVALUATION KIT IN A PROTECTIVE ESD BAG.

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