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AN1464 Datasheet(PDF) 20 Page - STMicroelectronics

Part # AN1464
Description  LOW-COST DOUBLE LI-ION BATTERY CHARGER
PDF  27 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN1464 Datasheet(HTML) 20 Page - STMicroelectronics

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LOW-COST DOUBLE LI-ION BATTERY CHARGER USING ST6255C/ST6265C MCU
Figure 11. Slot Monitor Flowchart (2)
previously FAIL
b
5 ?
0
b
4 ?
0
still FAIL
b
3?
1
0
still EXP
previously EXP
1
previously SAT
V
bat <Vtri ?
1
Other slot
uses PWM?
Yes
still SAT
Yes
No
Reset
chronometer
Initilalise PWM
duty cycle at 80%
No
TRI now
s11
b
4 ?
Other slot
uses PWM?
0
SAT now
Yes
Overheat?
No
Store original state
Disable priority request
Yes
HEAT now
previously TRI
No
V
bat <Vfast
SAT now
V
bat >Vf
still TRI
V
bat ?
FAST now
V
fast <Vbat <Vf
1
s1111
t>T
exp ?
EXP now
Yes
No



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