![]() |
Electronic Components Datasheet Search |
|
BQ29200 Datasheet(PDF) 13 Page - Texas Instruments |
|
|
BQ29200 Datasheet(HTML) 13 Page - Texas Instruments |
13 / 24 page ![]() FUSE 160 1 k Si 1406 1 OUT 8 0.1 F 2 VDD 7 260 3 6 4 CD GND 5 0.1 F 100 0.33 F PWR PAD 0.1 F VC1_ CB VC1 VC 2 CB_ EN 100 PACK+ PACK± CELL2 CELL1 13 bq29200, bq29209 www.ti.com SLUSA52C – SEPTEMBER 2010 – REVISED MARCH 2016 Product Folder Links: bq29200 bq29209 Submit Documentation Feedback Copyright © 2010–2016, Texas Instruments Incorporated 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information The bq2920x is designed to be used in 2-series Li-Ion battery packs and with the option to include voltage-based cell balancing. The number of parallel cells or the overall capacity of the battery only affects the cell balancing circuit due to the level of potential imbalance that needs to be corrected. 9.2 Typical Applications 9.2.1 Battery Connection Figure 9 shows the configuration for the 2-series cell battery connection with cell balancing enabled. Figure 9. 2-Series Cell Configuration 9.2.1.1 Design Requirements For this design example, use the parameters listed in Table 1. Table 1. Design Parameters DESIGN PARAMETER EXAMPLE VALUE at TA = 25°C Input voltage range 4 V to 10 V Overvoltage Protection (OVT) 4.35 V Overvoltage detection delay time 3 s Overvoltage detection delay timer capacitor 0.33 µF Cell Balancing Enabled Yes Cell Balancing Current, ICB1 and ICB2 10 mA Cell Balancing Resistors, RCB, RCB1, RCB2 and RVD RCB = 100 Ω, RCB1 = 260 Ω, RCB2 = 160 Ω, RVD = 100 Ω 9.2.1.2 Detailed Design Procedure The bq2920x has limited features but there are some key calculations to be made when selecting external component values. • Calculate the required CCD capacitor value for the voltage protection delay time. Care should be taken to evaluate the tolerances of the capacitor and the bq2920x to ensure system specifications are met. • Calculate the cell balancing resistor values to provide a suitable level of balancing current that will, at a minimum, counter act an increase in imbalance during normal operation of the battery. Care should be taken to ensure any connectivity resistance is also considered as this will also reduce the balancing current level. |
Similar Part No. - BQ29200_16 |
|
Similar Description - BQ29200_16 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |