-48V Hot-Swap Controllers with V
IN
Step Immunity and No R
SENSE
22   ______________________________________________________________________________________
Timing Table
NAME
SYMBOL
TYPICAL
TIME s
Power-Up Delay
t
ONDLY
220m
Load Probe Test Timeout
t
LP
220m
Load Probe Retry Time
t
LP_OFF
3.5
PGOOD (PGOOD) Assertion
Delay Time
t
PGOOD
1.26m
Autoretry Delay
t
RETRY
3.5
Circuit-Breaker Glitch Rejection
t
CB_DLY
1.4m
UVLO Glitch Rejection
t
REJ
1.5m
GATE Pulldown Pulse Following
a V
IN
 step

350?/DIV>
GATE Low After a V
IN
 Step,
Prior to Ramp

1m
Selector Guide
PART
CIRCUIT-
BREAKER
THRESHOLD
(mV)
FAULT
MANAGEMENT
PGOOD
ASSERTION
MAX5936LA
100
Latch
Low
MAX5936LB
200
Latch
Low
MAX5936LC
400
Latch
Low
MAX5936LN
No circuit
breaker
Latch
Low
MAX5936AA
100
Autoretry
Low
MAX5936AB
200
Autoretry
Low
MAX5936AC
400
Autoretry
Low
MAX5937LA
100
Latch
High
MAX5937LB
200
Latch
High
MAX5937LC
400
Latch
High
MAX5937LN
No circuit
breaker
Latch
High
MAX5937AA
100
Autoretry
High
MAX5937AB
200
Autoretry
High
MAX5937AC
400
Autoretry
High
MAX5937
PGOOD
V
OUT
UVLO
C
LOAD
DC-DC
CONVERTER
V+
ON
V-
BACKPLANE
GND
-48V
V
IN
*
*
*
*
GATE
V
EE
STEP_MON
LP
GND
*OPTIONAL COMPONENTS
Typical Operating Circuit
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