ORing MOSFET Controller with
Ultra-Fast 200ns Turn-Off
BUS
V OUT1
POWER SUPPLY 1
V BUS
1V TO 13.2V
N1
V BUS
COMMON
(PS1)
V IN
TO PRIMARY-SIDE
IN
GATE
BUS
SHUTDOWN
>2.75V
AUXIN
UVLO
OVP
U1
MAX5079
OVI
PGOOD
STH
C+
C-
FTH
GND
R STH
C STH
C EXT
R FTH
V OUT2
POWER SUPPLY 2
(PS2)
V BUS
1V TO 13.2V
V IN
N2
V BUS
TO PRIMARY-SIDE
SHUTDOWN
>2.75V
IN
AUXIN
GATE
U2
BUS
C BUS
UVLO
OVP
STH
MAX5079
OVI
PGOOD
R STH
C STH
C+
C-
FTH
GND
R FTH
C EXT
V OUT3
POWER SUPPLY 3
(PS3)
V BUS
1V TO 13.2V
V IN
N3
V BUS
TO PRIMARY-SIDE
IN
GATE
BUS
SHUTDOWN
>2.75V
AUXIN
UVLO
OVP
U3
MAX5079
OVI
PGOOD
STH
R STH
C STH
C+
C-
FTH
GND
R FTH
C EXT
Figure 2. Typical Application Circuit
______________________________________________________________________________________
15
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