max5978 Maxim Integrated Products, Inc., max5978 Datasheet - Page 19

• Manufacturer Part Number: max5978
• Description: 0 To 16v, Hot-swap Controller With 10-bit Current, Voltage Monitor, And 4 Led Drivers
• Manufacturer: Maxim Integrated Products, Inc.

Figure 2. Operation and Fault-Management Flowchart for Hot-Swap Channel
SET FAULT, CLEAR PG, AND SHUT DOWN
Current, Voltage Monitor, and 4 LED Drivers
CONTINUOUSLY SAMPLE VOLTAGE AND
CURRENT, UPDATE MIN-MAX VALUES,
HANDLE I
STORE SAMPLES TO CIRCULAR BUFFERS...
THE CHANNEL
0 to 16V, Hot-Swap Controller with 10-Bit
V
NO
CIRCUIT-BREAKER
STOP-DELAY
IN
NO
2
EXPIRED
BUFFER
> 2.7V
C COMMUNICATIONS,
NO
CHANNEL
TRIP?
ENABLED
YES
YES
YES
YES
NORMAL OPERATION
CLEAR FLAGS, CLEAR ALERT,
STOP CIRCULAR BUFFER
ARE 2 OR MORE OF
3 ENABLE SET?
INPUTS, CLEAR FLAGS
READ IRNG INPUT,
CLEAR FAULT
READ, PROT, A0,
A1, HWEN, IRNG
ARE 2 OR MORE OF
NO
3 ENABLE SET?
NO
SHUT DOWN THE
CLEAR PG AND
CHANNEL
ASSERT PG AFTER ADJUSTABLE DELAY
YES
NO
ARE 2 OR MORE OF
3 ENABLE SET?
ARE 2 OR MORE OF 3
YES
ENABLE SET?
NO
UV, OV, OR OC
WARNING OR
CRITICAL
NO
YES
YES
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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