background image

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, EXclickED, 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 6 V to 25 V and the output voltage range of 0 V to 16.4 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 60°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 © 2011, Texas Instruments Incorporated

Summary of Contents for bq28400EVM-001

Page 1: ...luation and evaluate the overall functionality of the bq28400 bq29200 solution under different charge and discharge conditions empty paras to force the title List of Tables to second page empty Contents 1 Features 2 2 bq28400 Based Circuit Module 2 3 bq28400 Circuit Module Schematic 3 4 Circuit Module Physical Layouts and Bill of Materials 4 5 EVM Hardware and Software Setup 11 6 Troubleshooting U...

Page 2: ... 001 Li ion 2 cell Any 2 bq28400 Based Circuit Module The bq28400 bq29200 based circuit module is a complete and compact example solution of a bq28400 circuit for battery management and protection of Li ion or Li Polymer packs The circuit module incorporates a bq28400 battery monitor IC bq29200 independent overvoltage protection IC with automatic cell balancing and all other components necessary t...

Page 3: ...00 implementation 3 1 Schematic The schematic follows the bill of materials in this user s guide see Section 4 2 NOTE The optional Zener diode D3 and resistor R21 on the PRES pin which are only required if PRES has a chance to short to PACK 3 2 Testing Fuse Blowing Circuit To prevent the loss of board functionality during the fuse blowing test the actual chemical fuse is not provided in the circui...

Page 4: ...sistor R21 on the PRES pin are only required if PRES has a chance to short to PACK 4 1 Board Layout This section shows the dimensions PCB layers Figure 1 through Figure 7 and assembly drawings for the bq28400 module Figure 1 bq28400EVM 001 Layout Silk Screen Figure 2 Top Assembly 4 bq28400EVM 001 SBS 1 1 Compliant Tablet PC and Netbook 2 Series Cell SLUU494 February 2011 Li Ion Battery Gas Gauge a...

Page 5: ...igure 3 Top Layer Figure 4 Internal Layer 1 Figure 5 Internal Layer 2 5 SLUU494 February 2011 bq28400EVM 001 SBS 1 1 Compliant Tablet PC and Netbook 2 Series Cell Li Ion Battery Gas Gauge and Protection Submit Documentation Feedback 2011 Texas Instruments Incorporated ...

Page 6: ...www ti com Figure 6 Bottom Layer Figure 7 Bottom Assembly 6 bq28400EVM 001 SBS 1 1 Compliant Tablet PC and Netbook 2 Series Cell SLUU494 February 2011 Li Ion Battery Gas Gauge and Protection Submit Documentation Feedback 2011 Texas Instruments Incorporated ...

Page 7: ...79 0519 Molex Mini AB 5 pins Inches 1 JP1 PEC03SAAN Header Male 0 100 inch x 3 PEC03SAAN Sullins 3 pin 100 mil spacing 1 Q1 FDN339AN MOSFET N ch SOT23 FDN339AN Fairchild 20 V 3A 0 05 Ohms 2 Q2 Q3 Si7409ADN MOSFET Fast PWRPAK 1212 Si7409ADN Vishay Switching PChan 30 V 7A 0 031 ohm 1 Q4 Si2343DS MOSFET Pch SOT23 Si2343DS Vishay 30 V 4 A 53 milliohm 6 R1 R2 R3 R4 1K Resistor Chip 0603 Std Std R24 R26...

Page 8: ...inch 5015 Keystone TP8 TP11 TP12 TP13 TP14 TP15 TP16 1 U1 BQ28400PW IC Battery TSSOP BQ28400PW TI Charger Controller 1 U2 BQ29200DRB IC Voltage VSON BQ2920xDRB TI Protection with Auto Cell Balance For 2 Cell Li Ion Batteries 1 PCB HPA699 Any Qty Connector 2 J1 mate Connector Molex 22 01 3047 Female 0 100 Centers 8 N A Terminals Crimp Molex 08 50 0114 Tin N A Wire Insulated 24 Alpha 1854 3 Awg Red ...

Page 9: ... substituted All other components can be substituted with equivalent MFG s components 5 Make one SMBus connector wire assembly for each assembly produced from J1 mate 4 24 Awg wires and Crimp terminals Wire colors for Pin numbers are listed below The wire assembly shall have a J1 mate on each end Red Pin 4 Signal USB_5V Brown Pin 3 Signal SDA White Pin 2 Signal SCL Black Pin 1 GND 9 SLUU494 Februa...

Page 10: ... of Materials www ti com Figure 8 Schematic 10 bq28400EVM 001 SBS 1 1 Compliant Tablet PC and Netbook 2 Series Cell SLUU494 February 2011 Li Ion Battery Gas Gauge and Protection Submit Documentation Feedback 2011 Texas Instruments Incorporated ...

Page 11: ...mporary directory The executable filename can consist of several component names and versions Double click on the executable filename and follow the installer instructions to complete the bq28400 EVM installation 3 If the EV2x00 was not previously installed after bq28400 EVM installation a TI USB DRIVER INSTALLER pops up Click Yes for the agreement message and follow its instructions 4 Plug the EV...

Page 12: ...C follow these steps 1 Connect the bq28400 based smart battery to the EV2x00 using wire leads as shown in Table 4 Table 4 Circuit Module to EV2x00 Connections bq28400 Based Battery EV2x00 SMBD SMBD SMBC SMBC VSS GND 2 Connect the PC USB cable to the EV2x00 and the PC USB port The bq28400 is now set up for operation 12 bq28400EVM 001 SBS 1 1 Compliant Tablet PC and Netbook 2 Series Cell SLUU494 Feb...

Page 13: ... are selected for scanning are scanned within this period The bq Gas Gauge Evaluation Software provides a logging function that logs the values that were last scanned by the EVSW To enable this function select the Start Logging button which causes the Keep Scanning button to be selected When logging is Stopped the Keep Scanning button is still selected and must be manually unchecked The logging in...

Page 14: ...tab available at the bottom of the screen To change the height of the Flags Static Data display drag the splitter bar the line that separates the Flags Static data from SBS values To return the splitter bar to its original location select View then Auto Arrange 8 2 Setting Programmable bq28400 Options NOTE It is very important to have the correct setting of these options to get the best performanc...

Page 15: ...entire tab of flash data or select the menu option Data Flash Write All The data flash must be read before any writes are performed to avoid any incorrect data being written to the device The File Special Export menu options allow the data flash to be exported but it configures the exported data flash to a learned state ready for mass production use The data flash configuration can be saved to a f...

Page 16: ...9 2 To Calibrate the bq28400 1 Select the types of calibration see Figure 12 2 Enter the measured values for the types selected 3 If Voltage Calibration is selected enter the number of cells on the pack and individual cell voltage 4 For Temperature Calibration select the sensor that is to be calibrated and enter the actual temperature Select Calibrate Voltage and Temperature to start calibration 5...

Page 17: ...n Figure 12 Calibration Screen 17 SLUU494 February 2011 bq28400EVM 001 SBS 1 1 Compliant Tablet PC and Netbook 2 Series Cell Li Ion Battery Gas Gauge and Protection Submit Documentation Feedback 2011 Texas Instruments Incorporated ...

Page 18: ...y cause erroneous results When scaling converted hexadecimal values to a higher number of bytes follow these rules When unsigned is selected the left pad contains zeroes When signed is selected the left pad contains zeroes for a positive number or the left pad contains F for negative numbers 10 3 Programming The Pro Advanced Screen enables device reprogramming from unencrypted and encrypted files ...

Page 19: ...ommended assembly sequence for a bq28400 based battery pack This procedure results in the most time efficient setup of the battery pack 19 SLUU494 February 2011 bq28400EVM 001 SBS 1 1 Compliant Tablet PC and Netbook 2 Series Cell Li Ion Battery Gas Gauge and Protection Submit Documentation Feedback 2011 Texas Instruments Incorporated ...

Page 20: ...nd wake up the EVM from shutdown mode 5 Connect the SMBus connector J2 to the EV2x00 adapter and start the EV software 6 Navigate to the Flash Screen Change the flash constants that correspond to the specific parameters of your application refer to the data sheet or other application reports For the first evaluation the default values may be used 7 Navigate to the Calibration screen Follow the pro...

Page 21: ...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 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 ...

Page 22: ...horized 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 or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications and acknowledge ...

Reviews: