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AN2390 Datasheet(PDF) 21 Page - STMicroelectronics

Part # AN2390
Description  A flexible universal battery charger
PDF  42 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2390 Datasheet(HTML) 21 Page - STMicroelectronics

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AN2390
Evaluation board implementation
21/42
Figure 12.
General charging flow – Li-ion charging state diagram (1/3)
Heat
Li-ion charging
algorithm
EXP
IDLE
TRI_2
TRI_1
SAT
CI_D
CI_U
CC mode
CV_D
CV_U
CV mode
If VBAT > VF
If IBAT > ISAT
If VBAT < VSAT
If VBAT > VF
Suspend PWM until
it gets to normal
condition
Trickle charging
to maintain
current = 0.2C
FAIL
If (IBAT > IFAIL) OR if (VBAT < VSC AND t > tFAIL)
If VBAT > VFAST



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