-48V Hot-Swap Controllers with External
R
SENSE
and High Gate Pulldown Current
______________________________________________________________________________________ 13
PWRGD
I
1
V
EE
V
GH
V
DL
V
GATE
-48V
R1
R2
Q1
R3
C2
MAX5921B/F
MAX5939B/F
V
IN
+
V
IN
-
C3
V
OUT
+
V
OUT
-
ON/OFF
ACTIVE-HIGH
ENABLE MODULE
DRAIN
GATE
SENSE
V
EE
V
DD
R4
R5
R6
*
*DIODES INC. SMAT70A
UV
OV
-48V RTN
(SHORT PIN)
-48V RTN
Q2
Q3
Figure 11. Active-High Enable Module
PWRGD
V
EE
V
GH
V
DL
V
GATE
-48V
R1
R2
Q1
R3
C2
MAX5921A/E
MAX5939A/E
V
IN
+
VIN-
C3
V
OUT
+
VOUT-
ON/OFF
ACTIVE-LOW
ENABLE MODULE
DRAIN
GATE
SENSE
V
EE
V
DD
R4
R5
R6
*
*DIODES INC. SMAT70A
UV
OV
-48V RTN
(SHORT PIN)
-48V RTN
Q2
Figure 12. Active-Low Enable Module