Datasheet

MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
_______________________________________________________________________________________ 7
STANDBY:
CPMP: OFF
GATE: LOW
WAIT
FOR
V
SHARE
CS - V
CC
< 0.4V
V
SHARE
= (CS - V
CC
) < 0.4V
I
FORWARD
= (V
CC
- CS) > 0.01V
I
REVERSE
= (CS - V
CC
) > 0.03V
CS - V
CC
> 0.4V
V
CC
> V
CCOK
ON:
SET
V
SHARE
LATCH,
CHARGE PUMP
ON
UVP FAULT
UVP = OK
CS
V
CC
CS - 0.4V
CS + 0.01V
V
SHARE
LATCH
I
REVERSE
BLANKING
FAULT
SHUTDOWN GATE:
FAULT LATCHED
FAULT
SHUTDOWN GATE:
FAULT LATCHED
UVP FAULT
SHUTDOWN GATE:
FAULT NOT LATCHED
I
REVERSE
CONDITION DETECTED AFTER
500ms BLANK TIME
(MAX8535/MAX8535A/MAX8536)
(MAX8585)
I
REVERSE
AFTER
32ms BLANK TIME
CS - 0.03V
I
FORWARD
AND OVP FAULT
I
FORWARD
I
REVERSE
TIMER >1V
ALL TRANSITIONS ARE ASYNCHRONOUS
V
CC
OR
TIMER
CYCLED
V
CC
OR
TIMER
CYCLED
500ms
FAULT
SHUTDOWN GATE:
NOT LATCHED
OVP OK AND
I
REVERSE
DURING
FIRST 500ms
UVP = OK
State Diagram