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AN2390 Datasheet(PDF) 24 Page - STMicroelectronics

No. de pieza AN2390
Descripción Electrónicos  A flexible universal battery charger
PDF  42 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2390 Datasheet(HTML) 24 Page - STMicroelectronics

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Evaluation board implementation
AN2390
24/42
Figure 15.
General charging flow – NiMH charging state diagram (1/3)
Heat
NiMH charging
algorithm
EXP
IDLE
FAIL
TRI_1
SAT
CI_D
CI_U
CC mode
If (dV/dt for timeCheck)
Suspend PWM
Trickle charging
to maintain
current = 0.2C,
If V
BA
T >
V
TR
I
no -dV checking
Trickle charging
to keep current
= 0.033C to 0.05C
Or, if VBAT > VMAX
Or, if (t > tFAST)
If (IBAT > IFAIL) OR if (VBAT < VFAIL AND t > 30 min)



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