Power Management - Analog Devices EVAL-LTC9101-3 User Manual

User Guide
LTC9101-3 EVALUATION KIT

POWER MANAGEMENT

The LTC9101-3 manages a user-defined system-level power budg-
et across all ports. Port power is automatically assigned based
on system power availability, initial physical classification and after
power-up, port dynamic power consumption. The default system
power budget is based off the maximum number of ports in the
system, which is set by the CFG1 pin. See
Table 3. Default System Power Budget and Near-Limit Warning Thresholds
CFG1 Total Number of Ports
LO 8
HI 16
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Table 3 for the default
System Power Budget
64 W
128 W
EVAL-LTC9101-3
power management settings. The Supply Overload (OVR) LED
turns on if it is near the power budget and blink if power is denied
or revoked. The LTC9101-3 prioritizes port power by port number,
sequentially (port 1 is highest priority). Refer to the data sheet for
more information on the Power Management algorithm. The system
power budget, warning levels, and port priority can be modified with
a custom configuration package.
Set Power Warning (OVR LED
Turns On)
49 W
113 W
Power Warning Reset (OVR
LED Turns Off)
45 W
109 W
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