Microchip Technology ARD00558, Руководство пользователя

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2014 Microchip Technology Inc. DS50002321A-page 17
2.4.2 State Machine Description
There
are five states, as shown in
Figure 2-3 and explained in Table 2-1.
FIGURE 2-3: The Charger State Machine.
Initialize
State
Machine
Precharge
(C/10)
Start
Charge
Mode 1
Constant
Current
(C/2)
Mode 2
Constant
Voltage
(4.2V)
Idle
Fault
YES
YES
YES
V
Sense
< V
Cutoff
NO
YES NO
I
Sense
< I
Min
or
I
Flat
YES
YES
V
Sense
= 4.2V NO
NO
V
Sense
< V
Bat_Detect
YES
I
Sense
< I
Bat_Detect
Time Out?
Time Out?
NO
Time Out?
Battery_Standby_Mode
V
Sense
< Topping_Voltage YES
YES
NO
NO
NO
Start
Standby
NO
NO
YES
Start/Stop ^ 1
Button Press
Button Press
YES
NO
Idle
Button Press