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Texas Instruments bq24261M User Manual Download Page 15

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Bill of Materials and Board Layout

Figure 7. Top Layer

15

SLUUBB5A – April 2015 – Revised October 2015

User's Guide for WCSP-Packaged bq24261M 3-A Battery Charger

Evaluation Module

Submit Documentation Feedback

Copyright © 2015, Texas Instruments Incorporated

Summary of Contents for bq24261M

Page 1: ...tions 6 2 2 Recommended Test Equipment 6 2 3 Recommended Test Equipment Setup 8 2 4 Recommended Test Procedure 10 3 Printed Circuit Board Layout Guideline 12 4 Bill of Materials and Board Layout 13 4...

Page 2: ...1 2 bq24261M EVM Features The bq24261M evaluation module EVM on PCB PWR691 provide a complete charger module for evaluating compact flexible high efficiency USB friendly switch mode battery charge an...

Page 3: ...Red D2 Green D1 TS SCL SIM 4 1 2 3 J15 22 05 3041 12 4k R6 STAT GND INT TP1 TP2 TP4 TP5 TP7 GND SW GND 200 R2 BAT SDA GND SYS 100k R7 GND 1 50k R3 1 50k R4 TP6 TP8 IN INT STAT 200 R1 SYS IN GND J14 E...

Page 4: ...TS GND External thermistor terminal J10 GND SYS output negative header J11 SYS GND SYS output positive and negative terminal J12 SYS SYS output positive header J13 BAT Battery positive header J14 BAT...

Page 5: ...5 and R6 has been sized to accommodate a 10 k thermistor If a different thermistor is used R5 and R6 must be resized PSEL LO Input current limit is set to 1 5 A until changed by I2C JP7 PSEL HI PSEL H...

Page 6: ...as YY are shorted Measure A B Check specified parameters A B If measured values are not within specified limits the unit under test has failed Observe A B Observe if A B occur If they do not occur the...

Page 7: ...s of operation the IC enters Default mode Note that the 27 minute safety timer is not reset by this function and eventually times out if charging does not complete unless the Safety Timer Time Limit i...

Page 8: ...eter is connected across J2 or TP3 and J6 or TP9 BAT GND 5 Connect VM 3 across J10 or TP7 and J14 or TP9 SYS GND 6 Connect VM 4 across J15 or TP5 and J14 or TP9 DRV GND 7 Connect J17 to EV2400 kit by...

Page 9: ...uter Open the bq24261M evaluation software The main window of the software is shown in Figure 5 9 SLUUBB5A April 2015 Revised October 2015 User s Guide for WCSP Packaged bq24261M 3 A Battery Charger E...

Page 10: ...simulator across J14 or J13 J5 BAT GND with current meter 2 in series as shown in Figure 4 If using a battery simulator like the one shown in Figure 2and referred to as BAT_LOAD in Figure 4 configure...

Page 11: ...Ds turn off 17 To test battery supplement mode lower PS 2 until VM 2 reads 3 6 V Add an external resistive or constant current load across J13 and J5 that draws more than 2 A from SYS Measure on VM 4...

Page 12: ...components through vias two vias per capacitor for power stage capacitors one via per capacitor for small signal components It is also recommended to put vias inside the PGND pads for the IC if possib...

Page 13: ...003 10 001000 2 L1 Inductor Wirewound Metal Composite 1 5 H 3 5 A 0 07 ohm SMD TDK SPM4012T 1R5M 1 LBL1 Thermal Transfer Printable Labels 0 650 W x 0 200 H 10 000 per roll Brady THT 14 423 10 1 Q1 MOS...

Page 14: ...h Figure 11 illustrate the PCB layouts for this EVM Figure 6 Top Assembly Layer 14 User s Guide for WCSP Packaged bq24261M 3 A Battery Charger SLUUBB5A April 2015 Revised October 2015 Evaluation Modul...

Page 15: ...d Board Layout Figure 7 Top Layer 15 SLUUBB5A April 2015 Revised October 2015 User s Guide for WCSP Packaged bq24261M 3 A Battery Charger Evaluation Module Submit Documentation Feedback Copyright 2015...

Page 16: ...w ti com Figure 8 First Internal Layer 16 User s Guide for WCSP Packaged bq24261M 3 A Battery Charger SLUUBB5A April 2015 Revised October 2015 Evaluation Module Submit Documentation Feedback Copyright...

Page 17: ...d Layout Figure 9 Second Internal Layer 17 SLUUBB5A April 2015 Revised October 2015 User s Guide for WCSP Packaged bq24261M 3 A Battery Charger Evaluation Module Submit Documentation Feedback Copyrigh...

Page 18: ...t www ti com Figure 10 Bottom Layer 18 User s Guide for WCSP Packaged bq24261M 3 A Battery Charger SLUUBB5A April 2015 Revised October 2015 Evaluation Module Submit Documentation Feedback Copyright 20...

Page 19: ...Layout Figure 11 Bottom Assembly Drawing 19 SLUUBB5A April 2015 Revised October 2015 User s Guide for WCSP Packaged bq24261M 3 A Battery Charger Evaluation Module Submit Documentation Feedback Copyrig...

Page 20: ...atures 2 Deleted the USB miniconnector from the schematic in Figure 1 3 Changed J2 USB To J2 Do not use in Section 1 4 4 NOTE Page numbers for previous revisions may differ from page numbers in the cu...

Page 21: ...ing the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repa...

Page 22: ...transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indic...

Page 23: ...ified allowable ranges some circuit components may have elevated case temperatures These components include but are not limited to linear regulators switching transistors pass transistors current sens...

Page 24: ...REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE L...

Page 25: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...

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