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0V to 16V, Dual Hot-Swap Controller with 10-Bit
Current and Voltage Monitor and 4 LED Drivers
V IN > 2.7V
NO
CONTINUOUSLY SAMPLE VOLTAGE AND
READ MODE, PROT, A0,
A1, RETRY, HWEN, IRNG_
INPUTS, CLEAR FLAGS
ARE 2 OR MORE OF 3
ENABLE SET?
NO
CHANNEL ENABLED
START CIRCULAR BUFFER
ENABLE GATE_ PULLUP
CURRENT, UPDATE MIN-MAX VALUES,
HANDLE I 2 C COMMUNICATIONS,
STORE SAMPLES TO CIRCULAR BUFFERS...
NORMAL OPERATION
ASSERT PG_ AFTER ADJUSTABLE DELAY
YES
MON_ > UV1
AND UV2?
NO
CIRCUIT-BREAKER
TRIP?
ARE 2 OR MORE OF
3 ENABLE SET?
UV, OV, OR OC
WARNING OR
CRITICAL
YES
SET ALERT, PG_
NO
NO
NO
PER PROT INPUT
SET FAULT_, CLEAR PG_, AND SHUTDOWN
AFFECTED CHANNEL(S) PER MODE
CLEAR PG_ AND
SHUTDOWN AFFECTED
CHANNEL(S) PER MODE INPUT
YES
PROT INPUT = GND
BUFFER
STOP-DELAY
EXPIRED
YES
STOP CIRCULAR BUFFER
NO
NO
WAIT FOR
AUTORETRY DELAY
YES
RETRY = V DREG ?
NO
NORMAL
OPERATION
READ IRNG_ INPUTS,
CLEAR FLAGS, CLEAR ALERT,
CLEAR FAULT_
ARE 2 OR MORE OF
CHANNEL
3 ENABLE SET?
ENABLED
NO
Figure 2. Operation and Fault-Management Flowchart for One Channel
YES
ARE 2 OR MORE OF
3 ENABLE SET?
NO
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