X80140 Datasheet, PDF (11/18 Pages) Intersil Corporation – Voltage Supervisor/Sequencer Quad Programmable Time Delay with Local/Remote Voltage Monitors

X80140, X80141, X80142, X80143, X80144
12V
5V
Power
5V
Supply _On/Off
Power 1.2V
Supply _On/Off
Power 3.3V
Supply _On/Off
Power _2.5V
Supply _On/Off
X80140/41/42/43
V4GDO
V4MON
V_CC
V3GDO
V3MON
V2GDO
V2MON
V1MON V1GDO
RESET
MR
FIGURE 9. EXAMPLE OF RELAY POWER SUPPLY SEQUENCING
V_CC1 ^µC
V_{CC2 RESET}
V_CC1 ^FPGA
V_CC2
V_CC1
V_CC2
ASIC
V1MON
(12V)
t_DELAY1
V1GDO
Power Supply
#2 OUTPUT
(5V)
V2GDO
Power Supply
#3 OUTPUT
(1.2V)
V3GDO
Power Supply
#4 OUTPUT
(3.3V)
V4GDO
Power Supply
#5 OUTPUT
(2.5V)
RESET
V1MON
threshold
100ms
500ms
1sec
5sec
Programmable
Delay
Power Supply
#2 ON
Timing Not
To Scale
Example: Five Independent
Power Supplies in relay timing
t_DELAY2
V2MON
threshold
Programmable
Delay
100ms
500ms
1sec
5sec
Power Supply
#3 ON
t_DELAY3
V3MON
threshold
100ms
500ms
1sec
5sec
Programmable
Delay
Power Supply
#4 ON
t_DELAY4
V4MON
threshold
Programmable
Delay
100ms
500ms
1sec
5sec
FIGURE 10. RELAY SEQUENCING OF DC-DC SUPPLIES (TIMING)
11
t_SPOR
FN8153.0
January 20, 2005