Texas instruments Tps7a39evm-865 User manual

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TPS7A39EVM-865 Evaluation Module

User's Guide

SBVU034–July 2017

TPS7A39EVM-865 Evaluation Module

This user’s guide describes the operational use of the TPS7A39EVM-865 evaluation module (EVM) as a

reference design for engineering demonstration and evaluation of the TPS7A3901DSC, low-dropout linear

regulator (LDO). Included in this user’s guide are setup and operating instructions, layout guidelines, a

printed circuit board (PCB) layout, a schematic diagram, and a bill of materials (BOM).

Throughout this document, the terms demonstration kit,evaluation board, and evaluation module are

synonymous with the TPS7A39EVM-865.

The following related documents are available through the Texas Instruments web site at www.ti.com.

Related Documentation

Device Literature Number

TPS7A39 SBVS263

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Contents

1 Introduction ................................................................................................................... 3

1.1 Before You Begin................................................................................................... 3

2 EVM Setup.................................................................................................................... 4

2.1 Input/Output Connectors and Jumper Descriptions............................................................ 4

2.2 TP12 – BUF ......................................................................................................... 5

2.3 Soldering Guidelines ............................................................................................... 6

2.4 Equipment Connection............................................................................................. 6

3 Operation ..................................................................................................................... 6

4 PCB Layout................................................................................................................... 7

5 Schematic..................................................................................................................... 8

6 Bill of Materials............................................................................................................... 9

List of Figures

1 Assembly Layer.............................................................................................................. 7

2 Top Layer Routing........................................................................................................... 7

3 Bottom Layer Routing....................................................................................................... 7

4 TPS7A39EVM-865 Schematic............................................................................................. 8

List of Tables

1 TPS7A39EVM-865 BOM.................................................................................................... 9

Trademarks

All trademarks are the property of their respective owners.

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Introduction

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TPS7A39EVM-865 Evaluation Module

1 Introduction

The Texas Instruments' TPS7A39EVM-865 EVM helps design engineers evaluate the operation and

performance of the TPS7A39 for possible use in their own circuit application. This particular EVM

configuration contains a single TPS7A39 device which integrates a positive and a negative monolithic

bipolar LDO to simplify signal chain dual-rail power-supply design. The regulator is capable of delivering

up to 150 mA per channel to the load. For stability, use a 10-µF (or larger) input and a 10-µF (or larger)

output capacitor for each channel of the TPS7A39.

1.1 Before You Begin

The following warnings and cautions are noted for the safety of anyone using or working close to the

TPS7A39EVM-865. Observe all safety precautions.

Warning Warning Hot surface. Contact may cause burns. Do not touch.

CAUTION

The circuit module may be damaged by overtemperature. To avoid damage,

monitor the temperature during evaluation and provide cooling, as needed, for

your system environment.

CAUTION

Some power supplies can be damaged by application of external voltages. If

using more than one power supply, check your equipment requirements and

use blocking diodes or other isolation techniques, as needed, to prevent

damage to your equipment.

CAUTION

The circuit module is not a finished product or electrical appliance. The module

does not contain current or voltage thresholds for circuit protection. It must be

used by qualified personnel with additional equipment for evaluation only.

EVM Setup

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2 EVM Setup

This section describes how to properly connect and setup the TPS7A39EVM-865, including the jumpers

and connectors on the EVM board.

2.1 Input/Output Connectors and Jumper Descriptions

2.1.1 J1 – OUTP_S

Positive output sense test point. An SMA connector (not provided) can be added here.

2.1.2 J2 – OUTP

Regulated positive output voltage connector.

2.1.3 J3 – INP_S

Positive input sense test point. An SMA connector (not provided) can be added here.

2.1.4 J4 – INN_S

Negative input sense test point. An SMA connector (not provided) can be added here.

2.1.5 J5 – GND

Positive output ground return connector.

2.1.6 J6 – GND

Positive input ground return connector.

2.1.7 J7 – OUTN_S

Negative output sense test point. An SMA connector (not provided) can be added here.

2.1.8 J8 – INP

Positive input voltage power-supply connector. Keep the positive input lead as short as possible to

minimize input inductance.

2.1.9 J9 – Positive LDO Resistor Divider

TPS7A39EVM-865 is prepopulated with four resistor dividers for the positive output voltage. Place a short

to select the desired output voltage from the silkscreen.

2.1.10 J10 – INN

Negative input voltage power-supply connector. Keep the negative input lead as short as possible to

minimize input inductance.

2.1.11 J11 – OUTN

Regulated negative output voltage connector.

2.1.12 J12 – GND

Negative input ground return connector.

2.1.13 J13 – GND

Negative output ground return connector.

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EVM Setup

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TPS7A39EVM-865 Evaluation Module

2.1.14 J14 – NR/SS

TPS7A39EVM-865 is prepopulated with two NR/SS capacitors. Select the desired value.

2.1.15 J15 – EN

Output enable. To enable the outputs, connect a jumper to short INP to EN.

2.1.16 J16 – Negative LDO Resistor Divider

TPS7A39EVM-865 is prepopulated with five options for the negative output voltage. Place a short to

select the desired output voltage from the silkscreen.

2.1.17 TP1 – OUTP_S

Positive output sense test point.

2.1.18 TP2 – INP_S

Positive input sense test point.

2.1.19 TP3 – FBP_S

Positive feedback sense test point.

2.1.20 TP4 – INN_S

Negative input sense test point.

2.1.21 TP5 – NR/SS

NR/SS sense test point.

2.1.22 TP6 – FBN_S

Negative feedback sense test point.

2.1.23 TP7 – OUTN_S

Negative output sense test point.

2.1.24 TP8 – EN_S

Enable sense test point.

2.1.25 TP9 – GND

Ground test point.

2.1.26 TP10 – GND

Ground test point.

2.1.27 TP11 – GND

Ground test point.

2.2 TP12 – BUF

Buffer pin test point.

EVM Setup

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2.3 Soldering Guidelines

To avoid damaging the integrated circuit (IC), use a hot-air system for any solder rework to modify the

EVM for the purpose of repair or other application reasons.

2.4 Equipment Connection

Use the following guidelines when connecting the equipment:

1. Set the positive input supply to 33 V (max), and turn the power supply off.

2. Set the negative input supply to –33 V (min), and turn the power supply off.

3. Connect the positive voltage lead from the input power supply to INP at the J8 connector of the EVM.

4. Connect the negative voltage lead from the input power supply to INN at the J10 connector of the

EVM.

5. Connect the ground lead from the input power supply to GND at the J6 and J12 connector of the EVM.

6. Connect a 0 mA to 150 mA load between OUTP and GND.

7. Connect a 0 mA to 150 mA load between OUTN and GND.

8. Disable the output by floating J15.

3 Operation

Operate the EVM using the following steps:

1. Turn on the power supplies.

2. Enable the output by jumping J15, the EN pin, to VIN.

3. Vary the respective load and input voltage, as necessary, for test purposes.

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PCB Layout

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4 PCB Layout

Figure 1 to Figure 3 illustrate the PCB layout for this EVM.

Figure 1. Assembly Layer Figure 2. Top Layer Routing

Figure 3. Bottom Layer Routing

Schematic

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5 Schematic

Figure 4 is the schematic for this EVM.

Figure 4. TPS7A39EVM-865 Schematic

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Bill of Materials

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6 Bill of Materials

The BOM for this EVM is shown in Table 1.

(1) These assemblies are ESD sensitive, observe ESD precautions.

(2) These assemblies must be clean and free from flux and all contaminants. Use of no-clean flux is not acceptable.

(3) These assemblies must comply with workmanship standards IPC-A-610 Class 2.

(4) Unless otherwise noted in the Alternate Part Number or Alternate Manufacturer columns, all parts may be substituted with equivalents.

Table 1. TPS7A39EVM-865 BOM(1)(2)(3)(4)

Designator Qty Value Description Package

Reference Part Number Manufacturer Alternate Part

Number Alternate

Manufacturer

!PCB1 1 Printed Circuit Board PWR865 Any - -

C1, C3, C8, C12 4 10uF CAP, CERM, 10 µF, 50 V, + /- 10%, X7 S, 1210 1210 C3225X7 S1 H106K250AB TDK

C6 1 0.1uF CAP, CERM, 0.1 µF, 100 V, + /- 10%, X7 S, AEC-Q200

Grade 1, 0603 0603 CGA3E3X7 S2A104K080AB TDK

C7, C10, C11 3 0.01uF CAP, CERM, 0.01 µF, 50 V, + /- 5%, C0 G/NP0, 0603 0603 C1608 NP01 H103 J080AA TDK

J2, J8 2 Standard Banana Jack, Insulated, Red 6091 6091 Keystone

J5, J6, J12, J13 4 Standard Banana Jack, Insulated, Black 6092 6092 Keystone

J9 1 Header, 2.54 mm, 4x2, Gold, SMT Header, 2.54

mm, 4x2, SMT TSM-104-01-L-DV Samtec

J10, J11 2 BANANA JACK, 15A, Insulated, Nylon, Yellow 940x438x438 mil 108-0907-001 Emerson Network Power

J14 1 Header, 100 mil, 3x1, Gold, SMT Samtec_TSM-

103-01-X-SV TSM-103-01-L-SV Samtec

J15 1 Header, 2.54 mm, 2x1, Gold, R/A, SMT Header, 2.54

mm, 2x1, R/A,

SMT 0878980204 Molex

J16 1 Header, 2.54 mm, 5x2, Gold, SMT Header, 2.54

mm, 5x2, SMT TSM-105-01-L-DV Samtec

R1 1 76.8k RES, 76.8 k, 1%, 0.1 W, 0603 0603 CRCW060376K8FKEA Vishay-Dale

R2 1 21.5k RES, 21.5 k, 1%, 0.1 W, 0603 0603 CRCW060321K5FKEA Vishay-Dale

R3 1 13.0k RES, 13.0 k, 1%, 0.1 W, 0603 0603 CRCW060313K0FKEA Vishay-Dale

R4 1 10.2k RES, 10.2 k, 1%, 0.1 W, 0603 0603 CRCW060310K2FKEA Vishay-Dale

R5 1 249k RES, 249 k, 1%, 0.1 W, 0603 0603 CRCW0603249KFKEA Vishay-Dale

R6, R9 2 280k RES, 280 k, 1%, 0.1 W, 0603 0603 CRCW0603280KFKEA Vishay-Dale

R7 1 0 RES, 0, 5%, 0.1 W, 0603 0603 ERJ-3 GEY0R00 V Panasonic

R8 1 100k RES, 100 k, 1%, 0.1 W, 0603 0603 CRCW0603100KFKEA Vishay-Dale

R10 1 66.5k RES, 66.5 k, 1%, 0.1 W, 0603 0603 CRCW060366K5FKEA Vishay-Dale

R11 1 22.1k RES, 22.1 k, 1%, 0.1 W, 0603 0603 CRCW060322K1FKEA Vishay-Dale

R12 1 14.0k RES, 14.0 k, 1%, 0.1 W, 0603 0603 CRCW060314K0FKEA Vishay-Dale

R13 1 11.0k RES, 11.0 k, 1%, 0.1 W, 0603 0603 CRCW060311K0FKEA Vishay-Dale

SH-J1, SH-J2, SH-

J3 3 1x2 Shunt, 100 mil, Gold plated, Black Shunt 969102-0000-DA 3M SNT-100-BK-G Samtec

Bill of Materials

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Table 1. TPS7A39EVM-865 BOM(1)(2)(3)(4) (continued)

Designator Qty Value Description Package

Reference Part Number Manufacturer Alternate Part

Number Alternate

Manufacturer

TP1, TP2, TP3,

TP4, TP5, TP6,

TP7, TP8, TP9,

TP10, TP11, TP12

12 Test Point, Compact, SMT Testpoint_Keysto

ne_Compact 5016 Keystone

U1 1 Wide-VIN (±33 V), 150-mA, Spilt-Rail Output, Positive

and Negative LDO Voltage Regulator with Startup

Tracking, DSC0010 J DSC0010 J TPS7A3901DSC Texas Instruments

C2, C4, C9, C13 0 10uF CAP, CERM, 10 µF, 25 V, + /- 20%, X5R, 0603 0603 C1608X5R1E106M080AC TDK

C5 0 0.01uF CAP, CERM, 0.01 µF, 50 V, + /- 5%, C0 G/NP0, 0603 0603 C1608 NP01 H103 J080AA TDK

C14 0 0.1uF CAP, CERM, 0.1 µF, 100 V, + /- 10%, X7 S, AEC-Q200

Grade 1, 0603 0603 CGA3E3X7 S2A104K080AB TDK

D1, D2 0 60 V Diode, Schottky, 60 V, 1 A, SOD-123 SOD-123 RB160M-60 TR Rohm

FID1, FID2, FID3 0 Fiducial mark. There is nothing to buy or mount. Fiducial N/A N/A

J1, J3, J4, J7 0 Connector, SMA Jack, Vertical, Gold, SMD SMA 142-0711-201 Emerson Network Power

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Bill of Materials

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IMPORTANT NOTICE FOR TI DESIGN INFORMATION AND RESOURCES

Texas Instruments Incorporated (‘TI”) technical, application or other design advice, services or information, including, but not limited to,

reference designs and materials relating to evaluation modules, (collectively, “TI Resources”) are intended to assist designers who are

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enhancements, improvements and other changes to its TI Resources.

You understand and agree that you remain responsible for using your independent analysis, evaluation and judgment in designing your

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This Notice applies to TI Resources. Additional terms apply to the use and purchase of certain types of materials, TI products and services.

These include; without limitation, TI’s standard terms for semiconductor products http://www.ti.com/sc/docs/stdterms.htm), evaluation

modules, and samples (http://www.ti.com/sc/docs/sampterms.htm).

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

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.

3Regulatory 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. This kit is not a finished product and when assembled may not be resold or

otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition

that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference.

Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must

operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter.

3.1.2 For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant:

CAUTION

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not

cause harmful interference, and (2) this device must accept any interference received, including interference that may cause

undesired operation.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to

operate the equipment.

FCC Interference Statement for Class A EVM devices

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of

the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is

operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not

installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to

correct the interference at his own expense.

FCC Interference Statement for Class B EVM devices

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of

the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential

installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance

with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference

will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which

can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more

of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and receiver.

•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

•Consult the dealer or an experienced radio/TV technician for help.

3.2 Canada

3.2.1 For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210 or RSS-247

Concerning EVMs Including Radio Transmitters:

This device complies with Industry Canada license-exempt RSSs. Operation is subject to the following two conditions:

(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may

cause undesired operation of the device.

Concernant les EVMs avec appareils radio:

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation

est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit

accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Concerning EVMs Including Detachable Antennas:

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)

gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type

and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for

successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types

listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.

Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited

for use with this device.

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 l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope

rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le

présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le

manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne

non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de

l'émetteur

3.3 Japan

3.3.1 Notice for EVMs delivered in Japan: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page 日本国内に

輸入される評価用キット、ボードについては、次のところをご覧ください。

http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page

3.3.2 Notice for Users of EVMs Considered “Radio Frequency Products” in Japan: EVMs entering Japan may not be certified

by TI as conforming to Technical Regulations of Radio Law of Japan.

If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required to follow the

instructions set forth by Radio Law of Japan, which includes, but is not limited to, the instructions below with respect to EVMs

(which for the avoidance of doubt are stated strictly for convenience and should be verified by User):

1. Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal

Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for

Enforcement of Radio Law of Japan,

2. Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to

EVMs, or

3. Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan

with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note

that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan.

【無線電波を送信する製品の開発キットをお使いになる際の注意事項】開発キットの中には技術基準適合証明を受けて

いないものがあります。技術適合証明を受けていないもののご使用に際しては、電波法遵守のため、以下のいずれかの

措置を取っていただく必要がありますのでご注意ください。

1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用

いただく。

2. 実験局の免許を取得後ご使用いただく。

3. 技術基準適合証明を取得後ご使用いただく。

なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。

上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。日本テキサス・イ

ンスツルメンツ株式会社

東京都新宿区西新宿６丁目２４番１号

西新宿三井ビル

3.3.3 Notice for EVMs for Power Line Communication: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page

電力線搬送波通信についての開発キットをお使いになる際の注意事項については、次のところをご覧ください。http:/

/www.tij.co.jp/lsds/ti_ja/general/eStore/notice_02.page

3.4 European Union

3.4.1 For EVMs subject to EU Directive 2014/30/EU (Electromagnetic Compatibility Directive):

This is a class A product intended for use in environments other than domestic environments that are connected to a

low-voltage power-supply network that supplies buildings used for domestic purposes. In a domestic environment this

product may cause radio interference in which case the user may be required to take adequate measures.

4EVM 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. The notices contain important safety information

related to, for example, temperatures and voltages.

4.3 Safety-Related Warnings and Restrictions:

4.3.1 User shall operate the EVM within TI’s recommended specifications and environmental considerations stated in the user

guide, other available documentation provided by TI, and any other applicable requirements and employ reasonable and

customary safeguards. Exceeding the specified performance ratings and specifications (including but not limited to input

and output voltage, current, power, and environmental ranges) for the EVM may cause personal injury or death, or

property damage. If there are questions concerning performance ratings and specifications, User should contact a TI

field representative prior to connecting interface electronics including input power and intended loads. Any loads applied

outside of the specified output range may also result in unintended and/or inaccurate operation and/or possible

permanent damage to the EVM and/or interface electronics. Please consult the EVM user guide prior to connecting any

load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative.

During normal operation, even with the inputs and outputs kept within the specified allowable ranges, some circuit

components may have elevated case temperatures. These components include but are not limited to linear regulators,

switching transistors, pass transistors, current sense resistors, and heat sinks, which can be identified using the

information in the associated documentation. When working with the EVM, please be aware that the EVM may become

very warm.

4.3.2 EVMs 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 assumes all responsibility and liability for proper and safe handling and use of the EVM by User or its employees,

affiliates, contractors or designees. User assumes all responsibility and liability to ensure that any interfaces (electronic

and/or mechanical) between the EVM and any human body are designed with suitable isolation and means to safely

limit accessible leakage currents to minimize the risk of electrical shock hazard. User assumes all responsibility and

liability for any improper or unsafe handling or use of the EVM by User or its employees, affiliates, contractors or

designees.

4.4 User assumes all responsibility and liability to determine whether the EVM is subject to any applicable international, federal,

state, or local laws and regulations related to User’s handling and use of the EVM and, if applicable, User assumes all

responsibility and liability for compliance in all respects with such laws and regulations. User assumes all responsibility and

liability for proper disposal and recycling of the EVM consistent with all applicable international, federal, state, and local

requirements.

5. Accuracy of Information: To the extent TI provides information on the availability and function of EVMs, TI attempts to be as accurate

as possible. However, TI does not warrant the accuracy of EVM descriptions, EVM availability or other information on its websites as

accurate, complete, reliable, current, or error-free.

6. Disclaimers:

6.1 EXCEPT AS SET FORTH ABOVE, EVMS AND ANY MATERIALS PROVIDED WITH THE EVM (INCLUDING, BUT NOT

LIMITED TO, REFERENCE DESIGNS AND THE DESIGN OF THE EVM ITSELF) ARE PROVIDED "AS IS" AND "WITH ALL

FAULTS." TI DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, REGARDING SUCH ITEMS, INCLUDING BUT

NOT LIMITED TO ANY EPIDEMIC FAILURE WARRANTY OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS

FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF ANY THIRD PARTY PATENTS, COPYRIGHTS, TRADE

SECRETS OR OTHER INTELLECTUAL PROPERTY RIGHTS.

6.2 EXCEPT FOR THE LIMITED RIGHT TO USE THE EVM SET FORTH HEREIN, NOTHING IN THESE TERMS SHALL BE

CONSTRUED AS GRANTING OR CONFERRING ANY RIGHTS BY LICENSE, PATENT, OR ANY OTHER INDUSTRIAL OR

INTELLECTUAL PROPERTY RIGHT OF TI, ITS SUPPLIERS/LICENSORS OR ANY OTHER THIRD PARTY, TO USE THE

EVM IN ANY FINISHED END-USER OR READY-TO-USE FINAL PRODUCT, OR FOR ANY INVENTION, DISCOVERY OR

IMPROVEMENT, REGARDLESS OF WHEN MADE, CONCEIVED OR ACQUIRED.

7. USER'S INDEMNITY OBLIGATIONS AND REPRESENTATIONS. USER WILL DEFEND, INDEMNIFY AND HOLD TI, ITS

LICENSORS AND THEIR REPRESENTATIVES HARMLESS FROM AND AGAINST ANY AND ALL CLAIMS, DAMAGES, LOSSES,

EXPENSES, COSTS AND LIABILITIES (COLLECTIVELY, "CLAIMS") ARISING OUT OF OR IN CONNECTION WITH ANY

HANDLING OR USE OF THE EVM THAT IS NOT IN ACCORDANCE WITH THESE TERMS. THIS OBLIGATION SHALL APPLY

WHETHER CLAIMS ARISE UNDER STATUTE, REGULATION, OR THE LAW OF TORT, CONTRACT OR ANY OTHER LEGAL

THEORY, AND EVEN IF THE EVM FAILS TO PERFORM AS DESCRIBED OR EXPECTED.

8. Limitations on Damages and Liability:

8.1 General Limitations. IN NO EVENT SHALL TI BE LIABLE FOR ANY SPECIAL, COLLATERAL, INDIRECT, PUNITIVE,

INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES IN CONNECTION WITH OR ARISING OUT OF THESE

TERMS OR THE USE OF THE EVMS , REGARDLESS OF WHETHER TI HAS BEEN ADVISED OF THE POSSIBILITY OF

SUCH DAMAGES. EXCLUDED DAMAGES INCLUDE, BUT ARE NOT LIMITED TO, COST OF REMOVAL OR

REINSTALLATION, ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, RETESTING,

OUTSIDE COMPUTER TIME, LABOR COSTS, LOSS OF GOODWILL, LOSS OF PROFITS, LOSS OF SAVINGS, LOSS OF

USE, LOSS OF DATA, OR BUSINESS INTERRUPTION. NO CLAIM, SUIT OR ACTION SHALL BE BROUGHT AGAINST TI

MORE THAN TWELVE (12) MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS

OCCURRED.

8.2 Specific Limitations. IN NO EVENT SHALL TI'S AGGREGATE LIABILITY FROM ANY USE OF AN EVM PROVIDED

HEREUNDER, INCLUDING FROM ANY WARRANTY, INDEMITY OR OTHER OBLIGATION ARISING OUT OF OR IN

CONNECTION WITH THESE TERMS, , EXCEED THE TOTAL AMOUNT PAID TO TI BY USER FOR THE PARTICULAR

EVM(S) AT ISSUE DURING THE PRIOR TWELVE (12) MONTHS WITH RESPECT TO WHICH LOSSES OR DAMAGES ARE

CLAIMED. THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT.

9. Return Policy. Except as otherwise provided, TI does not offer any refunds, returns, or exchanges. Furthermore, no return of EVM(s)

will be accepted if the package has been opened and no return of the EVM(s) will be accepted if they are damaged or otherwise not in

a resalable condition. If User feels it has been incorrectly charged for the EVM(s) it ordered or that delivery violates the applicable

order, User should contact TI. All refunds will be made in full within thirty (30) working days from the return of the components(s),

excluding any postage or packaging costs.

10. Governing Law: These terms and conditions shall be governed by and interpreted in accordance with the laws of the State of Texas,

without reference to conflict-of-laws principles. User agrees that non-exclusive jurisdiction for any dispute arising out of or relating to

these terms and conditions lies within courts located in the State of Texas and consents to venue in Dallas County, Texas.

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