Electronic Components Datasheet Search |
|
BQ78412DDWT Datasheet(PDF) 8 Page - Texas Instruments |
|
|
BQ78412DDWT Datasheet(HTML) 8 Page - Texas Instruments |
8 / 37 page UDG-10114 Months 12 24 95 96 97 98 30 48 99 100 6 0 18 36 42 CapDerateL CapDerateH Derate Value (100 mAh) Derate Change bq78412 SLUSAA0 – OCTOBER 2010 www.ti.com 4Ah decrease in 0.1 Ah steps = 40 separate steps over 365 days 365 days / 40 decrement steps = one decrement step every 9.1 days So CapDerateH = 9 Finally, 3 years is 365 days x 3 = 1095 days So DerateChange = 1095 Note that due to slight rounding errors (12 days instead of 12.1 days, etc.) the actual capacity represented at the end of any time internal (one year, two years, etc.) may be off by a small fraction. In the example above, the actual implementation calculates to be as listed below (assuming no changes to FCC from the learned capacity method occur): Initial capacity = 100Ah and full charge capacity (FCC) decremented 0.1 Ah every 12 days: End of year 1 capacity (at day 360) = 100Ah – 3.0Ah = 97Ah and (3.0Ah / 100Ah) = 3% End of year 2 capacity (at day 732) = 97Ah – 3.1 Ah = 93.9Ah and (3.1 Ah / 93.9Ah) = 3.3% End of year 3 capacity (at day 1095) = 93.9Ah – 3.0Ah = 90.9Ah and (3.0Ah / 90.9Ah) = 3.3% Total from time 0 to Year 3: (100Ah – 90.9Ah) / 100Ah = 9.1% / 3 years = 3.033%/year Figure 1 shows how the FCC decreases with time and how the parameters control this. Note that the parameter values used in Figure 1 are different from the values used in the previous example. Figure 1. Age Based Capacity Method 8 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s): bq78412 Not Recommended For New Designs |
Similar Part No. - BQ78412DDWT |
|
Similar Description - BQ78412DDWT |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | 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 |