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L9963E データシート(PDF) 49 Page - STMicroelectronics

部品番号 L9963E
部品情報  Automotive Multicell battery monitoring and balancing IC
PDF  184 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9963E データシート(HTML) 49 Page - STMicroelectronics

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The global TimedBalTimer is started and the balancing operation begins. The watchdog timer
WDTimedBalTimer starts along with the primary one. When one of the two counters reaches the threshold
designated for a cell, balancing is stopped on the involved cell.
While they start balancing at the same time, each balancing driver stops when its own time-threshold elapses.
When all the balancing tasks are done, the TimedBalTimer is reset and the eof_bal latch is set.
The balancing timer resolution can be programmed according to the TimedBalacc bit:
•
TimedBalacc = 0 selects the coarse resolution: 8 min 32 sec
•
TimedBalacc = 1 selects the fine resolution: 4 sec
Table 43 lists all the available configurations for the balancing thresholds (ThrTimedBalCellxx).
In case GO2SLP command is received or communication timeout occurs, the behavior depends on
slp_bal_conf:
•
slp_bal_conf = 0 means that balancing will be stopped when L9963E moves to a low power state (Sleep or
Cyclic Wakeup)
•
slp_bal_conf = 1 means that L9963E moves to Silent Balancing state and balancing will continue.
Balancing is always stopped when moving from a low power state to Normal.
Table 43. Balancing threshold configuration
TimedBalacc = 0 (coarse)
TimedBalacc = 1 (fine)
ThrTimedBalCellxx [dec]
ThrTimedBalCellxx [bin]
Threshold [hh:mm:ss]
Threshold [hh:mm:ss]
0
0000000
0:0:0
0:0:0
1
0000001
0:8:32
0:0:4
2
0000010
0:17:4
0:0:8
3
0000011
0:25:36
0:0:12
4
0000100
0:34:8
0:0:16
5
0000101
0:42:40
0:0:20
6
0000110
0:51:12
0:0:24
7
0000111
0:59:44
0:0:28
8
0001000
1:8:16
0:0:32
9
0001001
1:16:48
0:0:36
10
0001010
1:25:20
0:0:40
11
0001011
1:33:52
0:0:44
12
0001100
1:42:24
0:0:48
13
0001101
1:50:56
0:0:52
14
0001110
1:59:28
0:0:56
15
0001111
2:8:0
0:1:0
16
0010000
2:16:32
0:1:4
17
0010001
2:25:4
0:1:8
18
0010010
2:33:36
0:1:12
19
0010011
2:42:8
0:1:16
20
0010100
2:50:40
0:1:20
21
0010101
2:59:12
0:1:24
22
0010110
3:7:44
0:1:28
23
0010111
3:16:16
0:1:32
24
0011000
3:24:48
0:1:36
L9963E
Cell balancing
DS13636 - Rev 12
page 49/184



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