ade7518 Analog Devices, Inc., ade7518 Datasheet - Page 29

• Manufacturer Part Number: ade7518
• Description: Single-phase Energy Measurement Ic With 8052 Mcu, Rtc, And Lcd Driver
• Manufacturer: Analog Devices, Inc.

Table 25. Power Supply Event Timing Operating Modes
Parameter
t
t
t
t
1
2
3
4
SAG LEVEL TRIP POINT
SAGCYC = 1
Time
10 ns min
10 ns min
30 ms typ
130 ms typ
Figure 31. Power Supply Management Interrupts and Battery Switchover with V
V
P
2.75V
V
1.2V
– V
DCIN
V
DD
BATTERY SWITCH
BATTERY SWITCH
N
ENABLED ON
ENABLED ON
LOW V
LOW V
Description
Time between when V
Time between when V
Time between when V
battery switchover.
Time between when power supply restore conditions are met (V
BATPR[1:0] = 0b01 or V
SAG LEVEL
TRIP POINT
DCIN
DD
V
P
V
1.2V
2.75V
DCIN
V
− V
V
V
V
BAT
SW
SW
DD
N
Figure 32. Power Supply Management Transitions Between Modes
DCIN
DD
DCIN
DD
falls below 2.75 V and when battery switchover occurs.
above 2.75 V if BATPR[1:0] = 0b00) and when V
falls below 1.2 V and when FVDCIN is raised.
falls below 1.2 V and when battery switchover occurs if V
PSM0
PSM0
SAG EVENT
(FSAG = 1)
SAG EVENT
Rev. 0 | Page 29 of 128
30ms MIN
V
DCIN
EVENT
V
(FVDCIN = 1)
DCIN
PSM1 OR PSM2
PSM1 OR PSM2
EVENT
t
DD
1
or V
130ms MIN
t
V
3
DCIN
DCIN
SWITCHOVER V
DCIN
Enabled for Battery Switchover
EVENT
IF SWITCHOVER ON LOW V
above 1.2 V and V
ENABLED, AUTOMATIC BATTERY
SWOUT
PSM0
PSM0
SWOUT
switches to V
BSO EVENT
(FBSO = 1)
CONNECTED TO V
DCIN
DD
is enabled to cause
above 2.75 V if
DCIN
DD
.
IS
BAT
ADE7518