Texas Instruments LMR51450 EVM User manual

User’s Guide
LMR51450 EVM
ABSTRACT
The LMR51450 evaluation module (EVM) is designed to help customers evaluate the performance of the
LMR51450 synchronous step-down voltage converter. This EVM implements the LMR51450 in a 12-pin WSON
package, as shown in Table 1-1. The EVM is capable of delivering 5 V or 3.3 V output voltage and up to 5 A load
current with high efficiency and output accuracy in a very small solution size. The EVM provides multiple power
connectors and test points. It also provides a good layout example, which is optimized for EMI and thermal
performance.
Table 1-1. Device and Package Configurations
CONVERTER IC PACKAGE
U1 LMR51450 12-pin WSON package 3.0 mm × 3.0 mm × 0.75 mm
LMR51450EVM Front
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Table of Contents
1 Introduction.............................................................................................................................................................................3
1.1 LMR51450 Synchronous Step-Down Voltage Converter................................................................................................... 3
1.2 LMR51450 Evaluation Module........................................................................................................................................... 3
2 Quick Start...............................................................................................................................................................................4
3 Detailed Descriptions............................................................................................................................................................. 5
3.1 Connectors.........................................................................................................................................................................5
3.2 Jumpers..............................................................................................................................................................................6
4 Schematic................................................................................................................................................................................7
5 Board Layout...........................................................................................................................................................................8
6 Bill of Materials..................................................................................................................................................................... 10
7 Revision History....................................................................................................................................................................11
List of Figures
Figure 1-1. LMR51450 Pin Configuration (Top View).................................................................................................................. 3
Figure 1-2. LMR51450 Schematic............................................................................................................................................... 3
Figure 2-1. Top View of LMR51450 EVM.....................................................................................................................................4
Figure 4-1. LMR51450 EVM Schematic...................................................................................................................................... 7
Figure 5-1. Top 3D View.............................................................................................................................................................. 8
Figure 5-2. Top Layer...................................................................................................................................................................8
Figure 5-3. Signal Layer 1 - Ground Plane.................................................................................................................................. 8
Figure 5-4. Signal Layer 2 - Routing............................................................................................................................................8
Figure 5-5. Bottom Layer............................................................................................................................................................. 9
Figure 5-6. Bottom 3D view......................................................................................................................................................... 9
List of Tables
Table 1-1. Device and Package Configurations...........................................................................................................................1
Table 6-1. LMR51450 EVM Bill of Materials.............................................................................................................................. 10
Trademarks
All trademarks are the property of their respective owners.
Table of Contents www.ti.com
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1 Introduction
1.1 LMR51450 Synchronous Step-Down Voltage Converter
The LMR51450 device is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 5 A
of load current from a supply voltage ranging from 4 V to 36 V. The LMR51450 provides very high efficiency and
output accuracy in a very small solution size. The LMR51450 is capable of delivering 5 A of load current and
is peak current mode controlled. The following are additional features that provide both flexible and easy-to-use
solutions for a wide range of applications:
• Adjustable switching frequency
• FPWM variant (LMR51450FNDRRR)
• Power-good flag
• Precision enable
Automatic frequency foldback at light load improves efficiency over the entire load range. The device requires
few external components and PFM variant integrates Spread Spectrum for optimal EMI. Protection features
include the following:
• Thermal shutdown
• Input undervoltage lockout
• Cycle-by-cycle current limiting
• Hiccup short-circuit protection
The LMR51450 device is pin-to-pin compatible with the LMR51440 for easy output current scaling.
For a quick reference, Figure 1-1 shows the pin configuration of the LMR51450 and Figure 1-2 shows the
simplified schematic. See the LMR51450 4-V to 36-V, 5-A, Synchronous Step-Down DC/DC Converter Data
Sheet for more detailed feature descriptions and design guide.
Figure 1-1. LMR51450 Pin Configuration (Top View) Figure 1-2. LMR51450 Schematic
1.2 LMR51450 Evaluation Module
The LMR51450 EVM has the board populated with the LMR51450SDRRR and limiting current to 5 A and comes
with auto mode enabled.
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2 Quick Start
1. Connect the voltage supply between the VIN and GND connectors or between VIN_EMI and GND of J5 to
include the on-board input filter in the input path. Use short and thick gauge wires to minimize inductance
and IR drop. Note that sense points for VIN and VOUT are provided.
2. Connect the load of the converter between VOUT and GND connectors using short and thick wires.
3. Set the supply voltage at an appropriate level between 7 V to 36 V. The 7 V minimum ensures enough head
room for VOUT to equal 5 V at a 5-A load current. Set the current limit of the supply to an appropriate level to
supply needed current and protection.
4. Turn on the power supply. With the default configuration, the EVM powers up and provides VOUT = 5 V.
5. Monitor the output voltage with sense points. The maximum load current must be 5 A with the LMR51450.
Note that the maximum output current need to derate if ambient temperature is high, especially if device is
operated at higher frequency, for example, 1 MHz.
See Figure 2-1 for connector locations.
Figure 2-1. Top View of LMR51450 EVM
CAUTION
Caution Hot surface.
Contact may cause burns.
Do not touch.
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3 Detailed Descriptions
3.1 Connectors
This section describes the connectors on the EVM and how to properly connect, set up, and use the EVM. See
Figure 2-1 for a top view of the EVM.
VOUT Output voltage of the converter
The VOUT connector connects to the power inductor and output capacitors. Connect the load
between VOUT connector and the GND connector right next to it to provide load current. Connect
the loading device to the board with short and thick wires to handle the large DC output current.
GND1-
GND5
Ground of the converter
The GND is connected to the PGND and AGND pins of the device, as well as the ground of the
input and output capacitors. The GND connections next to VIN, VIN_EMI, and VOUT connectors
are meant for current return path for the supply voltage and load, respectively. Connectors are
provided in pairs to allow easy and accurate sensing of voltages. Connect to supply and load
grounds with short and thick wires. Other GND connectors are for signal measurement and
probing.
VIN Input voltage to the converter
The VIN connector connects to the input capacitors and the VIN pins of the LMR51450. Connect
the supply voltage from a power supply or a battery between VIN and GND connectors as power
input to the device. The voltage range must be higher than 3.9 V for the device to start up. VIN
higher than 6 V provides regulated 5-V output voltage. VIN must be no higher than 36 V to avoid
damaging the device. After start-up, the device stays active until VIN drops below 3.4 V. The
current limit on the supply must be high enough to provide the needed supply current. Otherwise,
the supply voltage does not maintain the desired voltage. The supply voltage must be connected
to the board with short and thick wires to handle the pulsing input current.
VIN_EMI Input voltage to input filter of the converter
LMR51450 EVM provides the option for the use of input filter. C1, C2 and L4 are placeholders
for input filter networks to be populated. If the input filter is desired between the supply and the
LMR51450, put C1, C2, and L4 on the board and connect the supply voltage between VIN_EMI
and GND_EMI connectors. The supply voltage must be connected to the board with short and
thick wires to handle pulsing input current. The output of the filter is connected to VIN, which is
connected to the VIN pins of the LMR51450 and the input capacitors.
GND_EMI Ground return for the input filter
This connector is the current return path for the supply connected to VIN_EMI. This connector
provides a short-loop connection to the input filter capacitors to best filter the conducted noise
generated from the PCB. Use VIN_EMI and GND_EMI connection if input filter is used and
conducted EMI test is desired.
EN To monitor the EN pin or input EN control signal
This test point is used to monitor the voltage on the device EN pin. By default, the EN pin is
connected to Vin.
PG To monitor the PGOOD pin
The PGOOD flag indicates whether the output voltage is within the regulation band. The PGOOD
pin of the device is an open-drain output and it is pulled up to VOUT on this board through a pullup
resistor. This flag is high impedance when the output voltage is in regulation.
VO This connector is provided to allow VOUT to be measured more accurately.
VI This connector is provided to allow VIN to be measured more accurately.
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3.2 Jumpers
This section describes the jumpers on the EVM. See Figure 2-1 for a top view of the EVM.
J2 This jumper allows the PG pin to be pulled up through 16k ohm resistor to Vout.
J3 This jumper allows the selection of an adjustable input UVLO.
J4 This jumper allows the selection of output voltage to be 5 V or 3.3 V.
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4 Schematic
The bill of materials of the EVM is tabulated in Bill or Materials . In addition, Figure 4-1 shows the corresponding
schematic.
Figure 4-1. LMR51450 EVM Schematic
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5 Board Layout
Figure 5-1 through Figure 5-6 show the board layout for the LMR51450 EVM. The EVM offers resistors,
capacitors, and test points to configure the following:
• Output voltage
• Precision enable
• Set frequency
The 12-pin WSON package offers a very small solution size. The PCB consists of a 4-layer design. There are
2-oz copper planes on the top and bottom and 1-oz copper mid-layer planes to dissipate heat with an array of
thermal vias to connect to all four layers.
Test points have been provided for ease of use to connect the power supply and required load, and to monitor
critical signals.
Figure 5-1. Top 3D View Figure 5-2. Top Layer
Figure 5-3. Signal Layer 1 - Ground Plane Figure 5-4. Signal Layer 2 - Routing
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Figure 5-5. Bottom Layer Figure 5-6. Bottom 3D view
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6 Bill of Materials
The bill of material is shown in Table 6-1 for the LMR51450 EVM.
Table 6-1. LMR51450 EVM Bill of Materials
DESIGNATOR QTY DESCRIPTION PART NUMBER MANUFACTURER
PCB 1 Printed Circuit Board BSR246 Rev A Any
C4, CO6 2 CAP, CERM, 1000 pF, 50 V,+/- 10%, X7R,
0603 885012206083 Wurth Elektronik
C5, CO5, CO7 3 CAP, CERM, 0.1 uF, 50 V, +/- 5%, X7R, 0805 08055C104JAT2A AVX
C6, C7 2 CAP, CERM, 4.7 uF, 50 V, +/- 10%, X7R, AEC-
Q200 Grade 1, 1210
CGA6P3X7R1H475K250
AB TDK
C8 1
CAP, Aluminum Polymer, 100 uF, 63 V, +/-
20%, 0.024 ohm, SMD, 2-Leads, Dia 10.5 mm,
Pin Spacing 8 mm SMD
PCR1J101MCL1GS Nichicon
CBoot 1 CAP, CERM, 0.1 uF, 50 V, +/- 10%, X7R, 0603 06035C104KAT2A AVX
CFF 1 CAP, CERM, 33 pF, 50 V, +/- 5%, C0G/NP0,
0603 06035A330JAT2A AVX
CO2, CO4 2 CAP, CERM, 47 uF, 10 V, +/- 20%, X7R, 1210 GRM32ER71A476ME15L MuRata
EN, VI, VO 3 Test Point, Multipurpose, Purple, TH 5129 Keystone Electronics
GND1, GND2, GND3,
GND4, GND5 5 Test Point, Multipurpose, Black, TH 5011 Keystone Electronics
J1, J4 2 Header, 100mil, 2x1, Gold, TH TSW-102-07-G-S Samtec
J2, J3 2 Header, 100mil, 3x1, Gold, TH TSW-103-07-G-S Samtec
J5, J6, J7 3 Terminal Block, 2x1, 5 mm, Green, TH 1935776 Phoenix Contact
L1 1 Inductor, Shielded Drum Core, Powdered Iron,
4.7 uH, 7 A, 0.015 ohm, SMD 74437368047 Wurth Elektronik
LBL1 1 Thermal Transfer Printable Labels, 0.650" W x
0.200" H - 10,000 per roll THT-14-423-10 Brady
R1, Rc, RFF 3 RES, 0, 5%, 0.1 W, 0603 RC0603JR-070RL Yageo, Yageo
America
R_PG, RENB, RFBB 3 RES, 16.0 k, 1%, 0.1 W, 0603 RC0603FR-0716KL Yageo
RENT 1 RES, 68.1 k, 1%, 0.1 W, 0603 RC0603FR-0768K1L Yageo
RFBT1 1 RES, 49.9 k, 1%, 0.1 W, 0603 RC0603FR-0749K9L Yageo
RFBT2 1 RES, 34.0 k, 1%, 0.1 W, 0603 RC0603FR-0734KL Yageo
Rinj 1 RES, 49.9, 1%, 0.1 W, 0603 RC0603FR-0749R9L Yageo
RT 1 RES, 31.6 k, 1%, 0.1 W, AEC-Q200 Grade 0,
0603 CRCW060331K6FKEA Vishay-Dale
SH-J2, SH-J3, SH-J4 3 Shunt, 100mil, Tin plated, Black SNT-100-BK-T-H Samtec
SW 1 Test Point, Miniature, SMT 5019 Keystone
U1 1 36-V, 5-A Synchronous Step-down Converter LMR51450SDRR Texas Instruments
C1, C2 0 CAP, CERM, 1 uF, 50 V, +/- 10%, X7R, AEC-
Q200 Grade 1, 1210
CGA6L2X7R1H105K160A
ATDK
CO1, CO3 0 CAP, CERM, 47 uF, 10 V, +/- 20%, X7R, 1210 GRM32ER71A476ME15L MuRata
D1 0 Diode, Schottky, 40 V, 1 A, SOD-123 1N5819HW-7-F Diodes Inc.
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7 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (October 2022) to Revision A (November 2022) Page
• Updated the EVM front image from Rev. E to Rev. A......................................................................................... 1
• Updated the descriptions to match the Rev. A design........................................................................................ 5
• Updated the schematic....................................................................................................................................... 7
• Updated the Top 3D view ...................................................................................................................................8
• Updated the Bill of Materials.............................................................................................................................10
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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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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.

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3
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.

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4
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.

www.ti.com
5
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
Copyright © 2019, Texas Instruments Incorporated

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IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT OF THIRD
PARTY INTELLECTUAL PROPERTY RIGHTS.
These resources are intended for skilled developers designing with TI products. You are solely responsible for (1) selecting the appropriate
TI products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable
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