-48V Hot-Swap Controller with V
IN
Step Immunity,
No R
SENSE
, and Overvoltage Protection
_______________________________________________________________________________________   5
V
OUT
 SLEW RATE
vs. TEMPERATURE
TEMPERATURE (癈)
60
35
10
-15
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
5.0
-40
85
C
GATE
 = 0, C
LOAD
 = 100礔
V
IN
 = 48V
V
IN
 = 72V
V
IN
 = 12V
GATE PULLDOWN CURRENT
vs. GATE VOLTAGE
V
GATE
 (V)
9
8
6
7
2
3
4
5
1
50
100
150
200
250
300
350
400
450
500
0
0
10
RETRY TIME
vs. TEMPERATUREo
TEMPERATURE (癈)
60
35
10
-15
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
3.0
-40
85
C
GATE
 = 0, C
LOAD
 = 100礔
STARTUP WAVEFORM
MAX5938 toc06
40ms/div
V
IN
50V/div
V
GATE
10V/div
V
OUT
50V/div
I
IN
2A/div
V
PGOOD
50V/div
R
LOAD
 = 48&
C
LOAD
 = 100礔
CIRCUIT-BREAKER EVENT
MAX5938 toc07
1ms/div
IRFR1310
R
CB_ADJ
 = 2k&
POL_SEL = OPEN
V
GATE
10V/div
V
OUT
50V/div
I
IN
2A/div
V
PGOOD
50V/div
V
IN
 = 48V
SHORT-CIRCUIT EVENT
MAX5938 toc08
400ns/div
IRFR1310
R
CB_ADJ
 = 2k&
R
LOAD
 = 48&
POL_SEL = OPEN
V
GATE
10V/div
V
OUT
50V/div
I
IN
10A/div
V
PGOOD
50V/div
V
IN
 = 48V
NORMALIZED CIRCUIT-BREAKER
THRESHOLD vs. TEMPERATURE
TEMPERATURE (癈)
60
35
10
-15
0.6
0.8
1.0
1.2
1.4
1.6
0.4
-40
85
Typical Operating Characteristics (continued)
(V
EE
= -48V, GND = 0V, V
IN
= GND - V
EE
, POL_SEL = floating, all voltages are referenced to V
EE
, unless otherwise noted. T
A
= +25癈,
unless otherwise noted.)
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