Texas Instruments bq24650 User Manual Download Page 18

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 0 V to 18 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 125°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 © 2010, Texas Instruments Incorporated

Summary of Contents for bq24650

Page 1: ...Summary 5 2 1 Definitions 5 2 2 Safety 5 2 3 Quality 5 2 4 Apparel 5 2 5 Equipment 5 2 6 Equipment Setup 6 2 7 Procedure 7 3 PCB Layout Guideline 9 4 Bill of Materials Board Layout and Schematic 10 4...

Page 2: ...nt current and constant voltage Charge is terminated when the current reaches one tenth of the fast charge rate A programmable fast charge timer provides a safety backup The precharge timer is fixed a...

Page 3: ...components Operating junction temperature range TJ 0 125 C The bq24650EVM board requires a regulated supply approximately 1 V minimum above the regulated voltage of the battery pack to a maximum inpu...

Page 4: ...RN The full scale differential voltage between SRP and SRN is fixed at 40 mV 3 It is set at 2 Adc from the factory 4 bq24650EVM Synchronous Switch Mode Battery Charge Controller for Solar SLUU444A Aug...

Page 5: ...e unit under test has failed Observe 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...

Page 6: ...A current 2 6 Equipment Setup 1 Set the power supply 1 PS 1 for 21 V 500 mVdc 2 5 A 0 1 A current limit and then turn off supply 2 Connect the output of PS 1 in series with a current meter multimeter...

Page 7: ...OAD 2 to be 10 5 V Measure I J2 VOUT 2 A 200 mA Observe D4 STAT1 ON D5 STAT2 OFF Open 2 3 of JP1 Measure I J2 VOUT 0 A 100 mA Observe D4 STAT1 OFF D5 STAT2 OFF Connect 2 3 of JP1 Internal TS Measure I...

Page 8: ...T decreases from 2 A toward 0 A while V J1 VIN become constant 17 8 V 500 mV Ensure that I J2 VOUT 0 A 100 mA and J2 VSYS 2 4 A 200 mA 2 7 7 Test Complete Turn off the power supply and remove all conn...

Page 9: ...ntact The area of this loop must be minimized The decoupling capacitors for these pins must be placed as close to the IC as possible 4 Decoupling capacitors for VREF VCC REGN must make the interconnec...

Page 10: ...erPak SI7288DP T1 Vishay Siliconix 1 Q2 2N7002 7 F MOSFET N ch 60V 115mA 1 2 SOT23 2N7002 7 F Diodes 2 R1 R2 3 9 Resistor Chip 1 4W 5 1206 STD STD 1 R3 10 Resistor Chip 1 8W 5 805 STD STD 0 R4 R8 Open...

Page 11: ...Schematic 4 2 Board Layout Figure 2 Top Layer 11 SLUU444A August 2010 Revised October 2010 bq24650EVM Synchronous Switch Mode Battery Charge Controller for Solar Power Submit Documentation Feedback C...

Page 12: ...ematic www ti com Figure 3 Second Layer 12 bq24650EVM Synchronous Switch Mode Battery Charge Controller for Solar SLUU444A August 2010 Revised October 2010 Power Submit Documentation Feedback Copyrigh...

Page 13: ...yout and Schematic Figure 4 Third Layer 13 SLUU444A August 2010 Revised October 2010 bq24650EVM Synchronous Switch Mode Battery Charge Controller for Solar Power Submit Documentation Feedback Copyrigh...

Page 14: ...ematic www ti com Figure 5 Bottom Layer 14 bq24650EVM Synchronous Switch Mode Battery Charge Controller for Solar SLUU444A August 2010 Revised October 2010 Power Submit Documentation Feedback Copyrigh...

Page 15: ...out and Schematic Figure 6 Top Assembly 15 SLUU444A August 2010 Revised October 2010 bq24650EVM Synchronous Switch Mode Battery Charge Controller for Solar Power Submit Documentation Feedback Copyrigh...

Page 16: ...matic www ti com Figure 7 Bottom Assembly 16 bq24650EVM Synchronous Switch Mode Battery Charge Controller for Solar SLUU444A August 2010 Revised October 2010 Power Submit Documentation Feedback Copyri...

Page 17: ...ematic 4 3 Schematic Figure 8 bq24650EVM Schematic 17 SLUU444A August 2010 Revised October 2010 bq24650EVM Synchronous Switch Mode Battery Charge Controller for Solar Power Submit Documentation Feedba...

Page 18: ...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 19: ...change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of thes...

Reviews: