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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 5 V to 28 V and the output voltage range of 0 V to 26 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 BQ2461X

Page 1: ...s Board Layout and Schematics 8 4 1 Bill of Materials 8 5 Board Layout 11 6 Schematics 19 List of Figures 1 Original Test Setup for HPA422 bq2461x bq2463x EVM 5 2 Top Layer 11 3 2nd Layer 12 4 3rd Lay...

Page 2: ...n The bq2461x bq2463x automatically restarts the charge cycle if the battery voltage falls below an internal threshold and enters a low quiescent current sleep mode when the input voltage falls below...

Page 3: ...n LED has no power source when off VPULLUP setting Jumper On 1 2 VPULLUP and JP3 1 2 Connect VPULLUP to VREF VREF 2 3 Connect VPULLUP to VEXT JP4 The pull up voltage source of ACDRV and BATDRV LED log...

Page 4: ...Jxx terminals are shorted Jxx OFF Internal jumper Jxx terminals are open Jxx YY ON Internal jumper Jxx adjacent terminals marked as YY are shorted Measure A B Check specified parameters A B If measure...

Page 5: ...series with a current meter multimeter to J1 VIN GND 3 Connect a voltage meter across J1 VIN GND 4 Set the power supply 2 for 0V 100mVDC 1 0 0 1A current limit and then turn off supply 5 Connect the...

Page 6: ...urn on the Load 2 Set the output voltage to 12V bq2461x or 2V bq2463x 3 Connect the output of the Load 1 in series with a current meter multimeter to J5 SYS GND Make sure a voltage meter is connected...

Page 7: ...RV off D6 BATDRV on D5 PG off D7 STAT1 off D8 STAT2 off 8 Turn off power supply 2 and 3 Set JP3 on 1 2 VPULLUP and VREF 3 PCB Layout Guideline 1 It is critical that the exposed power pad on the backsi...

Page 8: ...805 STD STD 2 2 2 2 1 0uF 50V C12 C14 Capacitor Ceramic 50V X5R 20 1206 STD STD 1 1 1 1 2 2uF 50V C2 Capacitor Ceramic 50V X7R 20 1206 STD STD 0 0 0 0 C32 Capacitor Ceramic 50V X7R 20 1206 STD STD 6 6...

Page 9: ...Std 2 2 2 2 10k R29 R30 Resistor Chip 1 16W 1 603 Std Std 6 6 6 6 100k R3 Resistor Chip 1 16W 1 603 Std Std R20 R32 R33 R37 R38 1 1 1 1 10k R16 Resistor Chip 1 10W 1 805 Std Std 1 1 1 1 100k R15 Resi...

Page 10: ...2N7002DICT Q6 Q8 Q9 MOSFET N ch 60V 115mA SOT23 2N7002DICT Vishay Liteon 1 2Ohms 3 3 3 3 SI4401BDY Q1 Q2 Q5 MOSFET PChan 40V 18A S0 8 SI4401BDY Vishay T1 GE Note 5 9 2millohm FDS4141 Siliconxi FDS414...

Page 11: ...om Board Layout 5 Board Layout Figure 2 Top Layer 11 SLUU396A January 2010 Revised July 2010 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger Copyright 2010 Texas Instruments Inco...

Page 12: ...oard Layout www ti com Figure 3 2nd Layer 12 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger SLUU396A January 2010 Revised July 2010 Copyright 2010 Texas Instruments Incorporated...

Page 13: ...ww ti com Board Layout Figure 4 3rd Layer 13 SLUU396A January 2010 Revised July 2010 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger Copyright 2010 Texas Instruments Incorporated...

Page 14: ...ard Layout www ti com Figure 5 Bottom Layer 14 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger SLUU396A January 2010 Revised July 2010 Copyright 2010 Texas Instruments Incorporat...

Page 15: ...w ti com Board Layout Figure 6 Top Assembly 15 SLUU396A January 2010 Revised July 2010 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger Copyright 2010 Texas Instruments Incorporat...

Page 16: ...d Layout www ti com Figure 7 Bottom Assembly 16 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger SLUU396A January 2010 Revised July 2010 Copyright 2010 Texas Instruments Incorpora...

Page 17: ...ti com Board Layout Figure 8 Top Silkscreen 17 SLUU396A January 2010 Revised July 2010 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger Copyright 2010 Texas Instruments Incorpora...

Page 18: ...Layout www ti com Figure 9 Bottom Silkscreen 18 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger SLUU396A January 2010 Revised July 2010 Copyright 2010 Texas Instruments Incorpor...

Page 19: ...tics 6 Schematics Figure 10 bq2461x bq2463x EVM Schematic 19 SLUU396A January 2010 Revised July 2010 bq2461x bq2463x EVM HPA422 Multi Cell Synchronous Switch Mode Charger Copyright 2010 Texas Instrume...

Page 20: ...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...

Page 21: ...h statements TI products are not authorized 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...

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