High-Voltage OVP with Battery Switchover
VIN
VOVLO
tDEB
VGATE1
VOVLO
VUVLO
INTUVREF
VUVLO
tDEB
tBLANK
tDEB tBLANK
VDD
VDD REGULATED
VCB
VGATE2
Figure 1. Timing Diagram
The following table lists the different modes of operations:
IN RANGE
VIN > VOVLO
VUVLO < VIN < VOVLO
(debounce timeout ongoing)
P1 STATE
P1 OFF (not affected by CB)
P1 OFF (not affected by CB)
VUVLO < VIN < VOVLO
(debounce timeout elapsed)
CB = 1 -> P1 is OFF
CB = 0 -> P1 is ON
VINTUVREF < VIN < VOVLO
(blanking timeout ongoing)
CB = 1 -> P1 is OFF
CB = 0 -> P1 is ON
VINTUVREF < VIN < VOVLO
(blanking timeout elapsed)
VIN < VINTUVREF
P1 OFF (not affected by CB). P1 does not turn on again until
adapter is unplugged (VIN <~0.75V) and plugged in again.
P1 OFF (not affected by CB). P1 does not turn on again until
adapter is unplugged (VIN <~0.75V) and plugged in again.
P2 STATE
CB = 1 -> P2 is ON
CB = 0 -> P2 is OFF
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