Datasheet

MAX5938
-48V Hot-Swap Controller with V
IN
Step Immunity,
No R
SENSE
, and Overvoltage Protection
_______________________________________________________________________________________ 5
V
OUT
SLEW RATE
vs. TEMPERATURE
MAX5938 toc10
TEMPERATURE (°C)
SLEW RATE (V/ms)
603510-15
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
µ
F
V
IN
= 48V
V
IN
= 72V
V
IN
= 12V
GATE PULLDOWN CURRENT
vs. GATE VOLTAGE
MAX5938 toc04
V
GATE
(V)
GATE PULLDOWN CURRENT (mA)
986 72 3 4 51
50
100
150
200
250
300
350
400
450
500
0
010
RETRY TIME
vs. TEMPERATURE
MAX5938 toc05
TEMPERATURE (
°
C)
RETRY TIME (s)
603510-15
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
µ
F
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
Ω
C
LOAD
= 100
µ
F
CIRCUIT-BREAKER EVENT
MAX5938 toc07
1ms/div
IRFR1310
R
CB_ADJ
= 2k
Ω
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
Ω
R
LOAD
= 48
Ω
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
MAX5938 toc09
TEMPERATURE (°C)
NORMALIZED CIRCUIT-BREAKER THRESHOLD (%)
603510-15
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°C,
unless otherwise noted.)