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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 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 © 2008, Texas Instruments Incorporated

Содержание bq24740/1EVM

Страница 1: ...er to system power selector function User selectable 2 cell 3 cell or 4 cell Li ion battery voltage User programmable battery regulation voltage with external voltage source 4 2 cell by default User p...

Страница 2: ...SLUS875 Jack Description J1 ACPWR AC adapter positive output J1 PGND AC adapter negative output J2 1 BYPASS BYPASS drive signal on EVM BYPASS_EX J2 2 Gate of Q2 J2 3 External BYPASS drive signal J3 1...

Страница 3: ...cription Factory Setting J2 BYPASS drive setting Jumper on 1 2 1 2 Use onboard BYPASS drive 2 3 Use external BYPASS drive J3 ACDRV drive setting Jumper on 1 2 1 2 Use onboard ACDRV drive 2 3 Use exter...

Страница 4: ...ils VXXX External voltage supply name VADP VBT VSBT LOADW External load name LOADR LOADI V TPyyy Voltage at HPA206 internal test point TPyyy For example V TP12 means the voltage at TP12 V Jxx Voltage...

Страница 5: ...C 5 V 0 1 A current limit and then turn off supply B Connect the output of power supply 1 in series with a current meter multimeter to J1 ACPWR GND C Connect a voltage meter across J1 ACPWR GND D Set...

Страница 6: ...TP VREF 0 1 V Measure V TP REGN 0 V 500 mV 4 Increase the output voltage of PS 1 until D7 EXTPWR is on but do not exceed 20 V Measure V TP ACDET 2 4 V 200 mV Measure V J1 POS 17 9 V 1 V Measure V J8...

Страница 7: ...disable the output The setup is now like Figure 2 for HPA206 Ensure that Ibat 0 A 10 mA and Isys 0 A 10 mA Figure 2 Test Setup for HPA206 bq24740EVM 4 Uninstall J20 Enable the charging for bq24740 onl...

Страница 8: ...placed close to Q4 drain and Q5 source bq24740 bq24741 RefDes Value Description Size Part Number MFR 001 002 0 0 C1 C3 C11 Open Capacitor Ceramic 0805 STD STD C18 0 0 C12 C25 Open Capacitor Ceramic 1...

Страница 9: ...T Vishay Liteon Q10 Q13 115 mA 1 2 Ohms Q15 Q17 Q18 Q19 Q20 Q21 Q22 Q23 3 3 Q8 Q9 Q11 NDS0605 MOSFET P ch 60 V SOT 23 NDS0605 Vishay 180 mA 5 Ohms 1 1 R1 430K Resistor Chip 1 16W 1 0603 STD STD 2 2 R1...

Страница 10: ...0 100 x 0 100 5002 Keystone TP7 TP8 Color Keyed inch TP9 TP10 TP13 TP15 TP16 TP17 TP18 2 2 TP6 TP26 5001 Test Point Black Thru Hole 0 100 x 0 100 5001 Keystone Color Keyed inch 1 0 U1 BQ24740RH IC Bat...

Страница 11: ...w ti com Bill of Materials Board Layout and Schematics Figure 3 Top and Silk Layer SLUU284A June 2007 Revised October 2008 bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 11 Submit Docu...

Страница 12: ...Materials Board Layout and Schematics www ti com Figure 4 Second Layer bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 12 SLUU284A June 2007 Revised October 2008 Submit Documentation F...

Страница 13: ...com Bill of Materials Board Layout and Schematics Figure 5 Third Layer SLUU284A June 2007 Revised October 2008 bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 13 Submit Documentation Fe...

Страница 14: ...Materials Board Layout and Schematics www ti com Figure 6 Bottom Layer bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 14 SLUU284A June 2007 Revised October 2008 Submit Documentation F...

Страница 15: ...m Bill of Materials Board Layout and Schematics Figure 7 Bottom Assembly SLUU284A June 2007 Revised October 2008 bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 15 Submit Documentation...

Страница 16: ...Materials Board Layout and Schematics www ti com Figure 8 Top Assembly bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 16 SLUU284A June 2007 Revised October 2008 Submit Documentation F...

Страница 17: ...Schematics www ti com Bill of Materials Board Layout and Schematics SLUU284A June 2007 Revised October 2008 bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 17 Submit Documentation Feedb...

Страница 18: ...Bill of Materials Board Layout and Schematics www ti com bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 18 SLUU284A June 2007 Revised October 2008 Submit Documentation Feedback...

Страница 19: ...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...

Страница 20: ...siness practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product wo...

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