background image

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 18 V to 22 V and the output voltage range of 6 V to 20 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 60

°

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

Содержание bq24725

Страница 1: ...13 12 Bottom Silkscreen 13 13 Top Assembly 14 14 Bottom Assembly 14 List of Tables 1 bq24275EVM and EV2300 Connections 4 2 Bill of Materials 8 1 Introduction 1 1 EVM Features Evaluation module for bq2...

Страница 2: ...overload High accuracy current sense amplifiers enable accurate measurement of the ac adapter current allowing monitoring of overall system power For details see bq24725 data sheet SLUS702 1 3 I O De...

Страница 3: ...rve A B Observe if A B occur If they do not occur the unit under test has failed Assembly drawings have location for jumpers test points and individual components 2 2 Equipment 2 2 1 Power Supplies Po...

Страница 4: ...d is newer do not overwrite the newer file 8 Click Finish 2 3 Equipment Setup 1 Set the power supply 1 for 0 V 100 mVdc with the current limit set to 5 A and then turn off supply 2 Connect the output...

Страница 5: ...uter Open the bq24725 evaluation software The main window of the software is shown in Figure 3 Figure 3 Main Window of the bq24725 Evaluation Software 5 SLUU439A August 2010 Revised May 2011 bq24725EV...

Страница 6: ...nal EVM2300 installation USB port Open the bq24725 evaluation software The main window of the software is shown in Figure 3 3 Type in 512 mA in the Charge Current DAC and click the Write button This s...

Страница 7: ...t meter with PS 3 Make sure a voltage meter is connected across J2 BAT GND Enable the output of the PS 3 Ensure that the output voltage is 10 V 500 mV Measure Measure V J2 SYS 19 5 V 1 V adapter conne...

Страница 8: ...from power ground Connect analog ground and power ground separately Connect analog ground and power ground together using power pad as the single ground connection point Or use a 0 resistor to tie an...

Страница 9: ...603 Std Std 1 R15 430k Resistor Chip 1 16W 1 603 Std Std 1 R16 10 Resistor Chip 1 4W 1 1206 Std Std 3 R17 R18 10 0k Resistor Chip 1 16W 1 603 Std Std R19 1 R20 100k Resistor Chip 1 16W 1 603 Std Std...

Страница 10: ...d Schematics www ti com 4 2 Board Layouts Figure 5 Top Layer Figure 6 Second Layer 10 bq24725EVM Evaluation Module SLUU439A August 2010 Revised May 2011 Submit Documentation Feedback Copyright 2010 20...

Страница 11: ...ls Board Layouts and Schematics Figure 7 Third Layer Figure 8 Bottom Layer 11 SLUU439A August 2010 Revised May 2011 bq24725EVM Evaluation Module Submit Documentation Feedback Copyright 2010 2011 Texas...

Страница 12: ...Layouts and Schematics www ti com Figure 9 Top Mask Figure 10 Bottom Mask 12 bq24725EVM Evaluation Module SLUU439A August 2010 Revised May 2011 Submit Documentation Feedback Copyright 2010 2011 Texas...

Страница 13: ...ard Layouts and Schematics Figure 11 Top Silkscreen Figure 12 Bottom Silkscreen 13 SLUU439A August 2010 Revised May 2011 bq24725EVM Evaluation Module Submit Documentation Feedback Copyright 2010 2011...

Страница 14: ...igure 13 Top Assembly Figure 14 Bottom Assembly 4 3 Schematics The schematic is shown on the following page 14 bq24725EVM Evaluation Module SLUU439A August 2010 Revised May 2011 Submit Documentation F...

Страница 15: ...ww ti com Bill of Materials Board Layouts and Schematics 15 SLUU439A August 2010 Revised May 2011 bq24725EVM Evaluation Module Submit Documentation Feedback Copyright 2010 2011 Texas Instruments Incor...

Страница 16: ...oduct 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 engine...

Страница 17: ...orized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parti...

Отзывы: