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BQ76PL455APFCT Datasheet(PDF) 116 Page - Texas Instruments

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Part # BQ76PL455APFCT
Description  16-Cell Industrial Integrated Battery Monitor
PDF  125 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

BQ76PL455APFCT Datasheet(HTML) 116 Page - Texas Instruments

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BAT0
COMMH
COMML
GND
CGND
Keep all signal Traces on
Top and Bottom Layers
COMMH
COMML
GND
BAT0
CGND
Middle Layers
Isolation
Keepout
COMMH
COMML
116
bq76PL455A
SLUSCL0A – SEPTEMBER 2016 – REVISED OCTOBER 2016
www.ti.com
Product Folder Links: bq76PL455A
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
Layout Example (continued)
An unbroken ground plane layer as part of a four or more layer board is recommended, with all AGND, DGND,
and CGND connections made directly to the plane. The common GND planes are star connected directly to
BAT0. There should also be a keep-out area on plane area adjacent to the isolation capacitors if daisy-chain
communication is implemented. The following is a list of grounds.
•
AGND1 – Power section (noisy GND)
•
AGND2 – GND for Front end output
•
AGND3 – GND for ADC input
•
DGND1, DGND2, DGND3 – Digital GND
•
CGND – Communications digital GND
Figure 40. Simplified Layout Guideline
10.3 Board Construction and Accuracy
The accuracy numbers provided in are based on the following board stack. Results may vary with board
thickness, layout, solder profile, and so forth.



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