max5970 Maxim Integrated Products, Inc., max5970 Datasheet - Page 19

• Manufacturer Part Number: max5970
• Description: 0v To 16v, Dual Hot-swap Controller With 10-bit Current And Voltage Monitor And 4 Led Drivers
• Manufacturer: Maxim Integrated Products, Inc.

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