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MAX8536EUA+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
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
MAX8535 Typical Operating Characteristics
(V
CC
= 12V, R
TIMER
= 25kΩ, UVP = 2V, OVP = 1V, C
GATE
= 0.01µF, BUS = 100µF, T
A
= +25°C, unless otherwise specified.)
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
8 _______________________________________________________________________________________
GATE-CHARGE CURRENT
vs. TIMER RESISTANCE (R
TIMER
)
MAX8535/MAX8536 toc01
RESISTANCE (kΩ)
GATE-CHARGE CURRENT (µA)
100
10
20
30
40
50
60
0
10 1000
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
SUPPLY CURRENT
vs. TEMPERATURE
MAX8535/MAX8536 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
806040200-20
2.2
2.4
2.6
2.8
3.0
3.2
3.4
2.0
-40
TIMER = GND
TIMER IS UNCONNECTED
MAX8535
REVERSE-CURRENT THRESHOLD
vs. TEMPERATURE
MAX8535/MAX8536 toc03
TEMPERATURE (°C)
REVERSE-CURRENT THRESHOLD (mV)
603510-15
27
29
31
33
35
34
32
30
28
26
25
-40 85
UVP AND OVP LEAKAGE CURRENT
vs. TEMPERATURE
MAX8535/MAX8536 toc04
TEMPERATURE (°C)
LEAKAGE CURRENT (nA)
806040200-20
20
40
60
80
100
120
140
0
-40
UVP
OVP
POWER-UP WAVEFORM (V
BUS
= 0V)
MAX8535/MAX8536 toc05
I
MOSFET
10A/div
V
CS
10V/div
V
GATE
20V/div
V
CC
10V/div
4ms/div
POWER-UP WAVEFORM (V
BUS
= 12V)
MAX8535/MAX8536 toc06
I
MOSFET
2A/div
V
CS
10V/div
V
GATE
20V/div
V
CC
10V/div
4ms/div
MAX8535 Typical Operating Characteristics (continued)
(V
CC
= 12V, R
TIMER
= 25kΩ, UVP = 2V, OVP = 1V, C
GATE
= 0.01µF, BUS = 100µF, T
A
= +25°C, unless otherwise specified.)
MAX8535/MAX8536/MAX8585
ORing MOSFET Controllers with Fastest
Fault Isolation for Redundant Power Supplies
_______________________________________________________________________________________ 9
TIMER-ENABLED STARTUP AND SHUTDOWN
WAVEFORMS (V
CC
= 12V, V
BUS
= 12V)
MAX8535/MAX8536 toc07
I
MOSFET
50mA/div
V
CS
10V/div
V
GATE
20V/div
V
TIMER
2V/div
4ms/div
TIMER-ENABLED STARTUP AND SHUTDOWN
WAVEFORMS (V
CC
= 12V, V
BUS
= 0V)
MAX8535/MAX8536 toc08
I
MOSFET
10A/div
V
CS
10V/div
V
GATE
20V/div
V
TIMER
1V/div
4ms/div
REVERSE-CURRENT FAULT WAVEFORM
(R1 = 10Ω)
MAX8535/MAX8536 toc09
I
MOSFET
5A/div
V
FAULT
10V/div
V
GATE
20V/div
V
CS
1V/div
12V
400ns/div
UVP FAULT WAVEFORM
(R1 = 100Ω)
MAX8535/MAX8536 toc10
V
FAULT
10V/div
V
UVP
1V/div
1µs/div
1.25V
V
CS
10V/div
V
GATE
20V/div
SELECTIVE OVP SHUTDOWN WAVEFORM
(R1 = 10
Ω)
MAX8535/MAX8536 toc11
V
FAULT
10V/div
V
GATE1
(OVP UNIT)
20V/div
V
GATE2
(GOOD UNIT)
20V/div
V
CS
1V/div
12V
1µs/div
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

MAX8536EUA+

Mfr. #:
Buy MAX8536EUA+
Manufacturer:
Maxim Integrated
Description:
Gate Drivers ORing MOSFET Controller
Lifecycle:
New from this manufacturer.
Delivery:
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