Texas Instruments bq24187, User Manual

Page 1: ...Summary 5 2 1 Definitions 5 2 2 Recommended Test Equipment 5 2 3 Recommended Test Equipment Setup 7 2 4 Recommended Test Procedure 9 3 Printed Circuit Board Layout Guideline 10 4 Bill of Materials and Board Layout 11 4 1 Bill of Materials 11 4 2 Board Layout 12 List of Figures 1 bq2418xEVM Schematic 3 2 BAT_Load PR1010 Schematic 6 3 Connections of HPA172 Kit 7 4 Recommended Initial Test Setup for ...

Page 2: ... sheet SLUSBM0 1 2 bq24187EVM Features The bq24187 evaluation module EVM provides a complete charger module for evaluating compact flexible high efficiency USB friendly switch mode battery charge solutions for single cell Li ion and Li polymer battery powered systems used in a wide range of portable applications Key EVM features include Terminal blocks and standard headers for IN BAT TS USB connec...

Page 3: ...C1 TS IN Open C8 PSEL 1 2 J1 GND GND GND DM SCL GND 1 2 J8 SDA GND 0 033uF C3 GND 1 2 J6 DRV SW 1 5 uH L1 DRV 1 2 3 JP4 HIGH CD DRV 1 2 J7 LOW DRV DRV GND GND GND EXT 1 2 J3 1 2 J9 5 62k R5 TP9 TS GND TS DRV GND 1 2 3 JP5 EXT D2 1 2 JP2 1 2 JP3 D1 TP10 TS SCL SIM 1 2 3 4 5 6 7 8 9 10 J12 12 4k R6 STAT GND INT TP1 TP2 TP3 TP4 TP5 TP7 GND SW GND 200 R2 TP11 BAT SDA GND CS 50K R7 GND 1 50k R3 1 50k R...

Page 4: ...2 Shorting jumper to connect DRV to annode of D1 STAT LED SHORTED JP3 Shorting jumper to connect DRV to annode of D1 INT LED SHORTED CD LO Charge disable low for normal operation JP4 CD LO CD HI Charge disable high to disable the buck converter and enter Hi Z mode TS SIM Connects a potentiometer to the TS pin so that the potentiometer can simulator a thermistor The potentiometer is preset per R5 a...

Page 5: ...YY terminal of header XX Jxx BBB Terminal or pin BBB of header xx JPx ON Internal jumper Jxx terminals are shorted JPx OFF Internal jumper Jxx terminals are open JPx YY ON Internal jumper Jxx adjacent terminals marked 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 the...

Page 6: ...de 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 is expanded or disabled via the GUI One way to reset the safety timer is to allow the 30 second watchdog timer to expire See Figure 3 in the data sheet for more information about the timers Also it is generally helpful to activate the Write...

Page 7: ...nput side PS 2 of BAT_Load then turn off PS 2 6 Connect the output side of the battery or BAT_Load in series with current meter multimeter 2 CM 2 to J11 and J10 or J5 BAT GND Ensure that a voltage meter VM 2 is connected across J10 or TP1 and J5 or TP7 BAT and GND 7 Connect VM 3 across J6 and J8 DRV and GND 8 Connect the HPA172 kit to J12 by the 10 pin ribbon cable Connect the USB port of the HPA1...

Page 8: ... is configured as is shown in Figure 4 Figure 4 Recommended Initial Test Setup for bq24187EVM 625 11 Turn on the computer Open the BQ24187 evaluation software Figure 5 shows the main window of the software Figure 5 Main Window of BQ24187SW Evaluation Software 8 bq24187 Evaluation Module User s Guide SLUUAI5 April 2014 Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Page 9: ...le Charging if checked Check Enable STAT INT Outputs Set Battery Regulation Voltage to 4 20 V Set IN Input Current Limit to 2 0 A Set Charge Current to 1000 mA Click the READ button at the top of the window and confirm that the previous settings remain 7 Enable PS 2 and adjust PS 2 so that the voltage measured by VM 2 across BAT and GND measures 3 8 V 50 mV 8 Adjust the power supply so that VM 1 s...

Page 10: ...nnected directly to the return of all 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 possible A star ground design approach is typically used to keep circuit block currents isolated high power low power small signal which reduces noise coupling and grou...

Page 11: ...Sullins L1 1 1 5 uH Inductor High Current 3 5A 70 milliohm 4 20x 4 20 mm SPM4012T 1R5M TDK FDSD0415 H 1R5M TOKO LBL1 1 Thermal Transfer Printable Labels 0 650 W x PCB Label 0 650 H x 0 200 W THT 14 423 10 Brady 0 200 H 10 000 per roll R1 R2 2 200 RES 200 ohm 1 0 1W 0603 0603 CRCW0603200RFKEA Vishay Dale R3 R4 2 1 50k RES 1 50k ohm 1 0 1W 0603 0603 RC0603FR 071K5L Yageo America R5 1 5 62k RES 5 62k...

Page 12: ... 2 Board Layout Figure 6 through Figure 10 show the bq24187EVM 625 Rev A PCB layouts Figure 6 Top Assembly Layer 12 bq24187 Evaluation Module User s Guide SLUUAI5 April 2014 Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Page 13: ...www ti com Bill of Materials and Board Layout Figure 7 Top Layer 13 SLUUAI5 April 2014 bq24187 Evaluation Module User s Guide Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Page 14: ...of Materials and Board Layout www ti com Figure 8 First Internal Layer 14 bq24187 Evaluation Module User s Guide SLUUAI5 April 2014 Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Page 15: ... com Bill of Materials and Board Layout Figure 9 Second Internal Layer 15 SLUUAI5 April 2014 bq24187 Evaluation Module User s Guide Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Page 16: ...ll of Materials and Board Layout www ti com Figure 10 Bottom Layer 16 bq24187 Evaluation Module User s Guide SLUUAI5 April 2014 Submit Documentation Feedback Copyright 2014 Texas Instruments Incorporated ...

Page 17: ...ndling and use of EVMs and if applicable compliance in all respects with such laws and regulations 10 User has sole responsibility to ensure the safety of any activities to be conducted by it and its employees affiliates contractors or designees with respect to handling and using EVMs Further user is responsible to ensure that any interfaces electronic and or mechanical between EVMs and any human ...

Page 18: ...This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at its own expense FCC Interference Statement ...

Page 19: ...érieur au gain maximal indiqué sont strictement interdits pour l exploitation de l émetteur Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2014 Texas Instruments Incorporated spacer Important Notice for Users of EVMs Considered Radio Frequency Products in Japan EVMs entering Japan are NOT certified by TI as conforming to Technical Regulations of Radio Law of ...

Page 20: ...esponsible 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 information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

Page 21: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments BQ24187EVM 625 ...