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Evaluation Board/Kit Important Notice

Texas Instruments (TI) provides the enclosed product(s) under the following conditions:

This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION
PURPOSES ONLY 
and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the
product(s) must have electronics training and observe good engineering practice standards. As such, the goods being provided are
not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations,
including product safety and environmental measures typically found in end products that incorporate such semiconductor
components or circuit boards. This evaluation board/kit does not fall within the scope of the European Union directives regarding
electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the
technical requirements of these directives or other related directives.

Should this evaluation board/kit not meet the specifications indicated in the User

s Guide, the board/kit may be returned within 30

days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY
SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING
ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all
claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user

s responsibility to

take any and all appropriate precautions with regard to electrostatic discharge.

EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER
FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive.

TI assumes no liability for applications assistance, customer product design, software performance, or infringement of
patents or services described herein.

Please read the User

s Guide and, specifically, the Warnings and Restrictions notice in the User

s Guide prior to handling the

product. This notice contains important safety information about temperatures and voltages. For additional information on TI

s

environmental and/or safety programs, please contact the TI application engineer or visit

www.ti.com/esh

.

No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or
combination in which such TI products or services might be or are used.

FCC Warning

This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION
PURPOSES ONLY 
and is not considered by TI to be a finished end-product fit for general consumer use. It generates, uses, and
can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15
of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this
equipment in other environments may cause interference with radio communications, in which case the user at his own expense
will be required to take whatever measures may be required to correct this interference.

EVM Warnings and Restrictions

It is important to operate this EVM within the input voltage range of xx V to xx V and the output voltage range of xx V to xx V.

Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are
questions concerning the input range, please contact a TI field representative prior to connecting the input power.

Applying loads outside of the specified output range may result in unintended operation and/or possible permanent damage to the
EVM. Please consult the EVM User

'

s 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, some circuit components may have case temperatures greater than 55

°

C. The EVM is designed to

operate properly with certain components above 60

°

C as long as the input and output ranges are maintained. These components

include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors. These types of
devices can be identified using the EVM schematic located in the EVM User

'

s Guide. When placing measurement probes near

these devices during operation, please be aware that these devices may be very warm to the touch.

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

Copyright

©

2011, Texas Instruments Incorporated

Summary of Contents for TPS65257

Page 1: ...PS65258EVM Schematic 2 4 EVM Layout 5 5 Bench Test Setup Conditons 6 5 1 Headers Description 7 5 2 Test Points and Placement 7 List of Figures 1 TPS65258EVM Schematic 3 2 Composite Layer 4 3 Top Layer...

Page 2: ...enable the USB switch either with A jumper or external drive signals to the USBEN pin 4 If USBx_nFAULT signal is required connect J35 jumpers or wire the alarms pin to a pull up supply 5 Connect load...

Page 3: ...65258EVM Schematic 3 SLVU568 September 2011 TPS65257 High Current Synchronous Step Down Three Buck Switcher Evaluation Module with 1USB Switch and Push Button Controller Submit Documentation Feedback...

Page 4: ...Composite Layer 4 TPS65257 High Current Synchronous Step Down Three Buck Switcher SLVU568 September 2011 Evaluation Module with 1USB Switch and Push Button Controller Submit Documentation Feedback Cop...

Page 5: ...Cu Ground Figure 5 Middle 3rd Layer Figure 6 Bottom Layer 5 SLVU568 September 2011 TPS65257 High Current Synchronous Step Down Three Buck Switcher Evaluation Module with 1USB Switch and Push Button C...

Page 6: ...Headers description and jumper placement 6 TPS65257 High Current Synchronous Step Down Three Buck Switcher SLVU568 September 2011 Evaluation Module with 1USB Switch and Push Button Controller Submit D...

Page 7: ...dicator pulled to 3V3 Fit according to test requirement JP27 PGOOD S PGOOD indicated pulled to 3V3 Fit according to test requirement 5 2 Test Points and Placement Buck converter outputs are white and...

Page 8: ...03 SMD 0603 3 R3 R8 R23 20 K RES 20K OHM 1 10W 5 0603 SMD 0603 1 R6 383 K RES 383K OHM 1 10W 1 0603 SMD 0603 4 R10 R26 R27 R35 100 K RES 100K OHM 1 10W 5 0603 SMD 0603 5 R14 R17 R20 R37 R5a 0 RES 0 0...

Page 9: ...duct This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application enginee...

Page 10: ...ncy energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES 003 rules which are designed to provide reasonable protection against radio fr...

Page 11: ...na 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...

Page 12: ...roduct only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this product or 3 Use of this product only after you obtained the Technical Regulatio...

Page 13: ...property damage personal injury or death If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and in...

Page 14: ...egulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided...

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