Datasheet

LTC2974
67
2974fc
For more information www.linear.com/LTC2974
READ_VIN
This command returns the most recent ADC measured value of the input voltage at the V
IN_SNS
pin.
READ_VOUT
This command returns the most recent ADC measured value of the channel’s output voltage.
READ_IOUT
This command returns the most recent ADC measured value of the channel’s output current.
READ_TEMPERATURE_1
This command returns the most recent measured value of the external diode temperature in °C. This value is used for
all temperature related operations and calculations. This command is paged. READ_TEMPERATURE_2 is substituted
for READ_TEMPERATURE_1 if the associated T
SENSE
network fails to detect a valid temperature.
The T
SENSE
network will fail to detect a valid temperature under the following conditions:
The T
SENSE
pin is shorted to a constant voltage.
The sense diode has an ideality factor greater than N_TS max.
Floating the T
SENSE
pin is not recommended and may return unpredictable temperature values.
READ_TEMPERATURE_2
This command returns the most recent ADC measured value of junction temperature in °C as determined by the
LTC2974’s internal temperature sensor. This register is for information purposes and does not generate any faults,
warnings, or affect any other registers or internal calculations unless it is used as READ_TEMPERATURE_1. This
command is not paged.
READ_TEMPERATURE_2 is substituted for READ_TEMPERATURE_1 if a channel’s T
SENSE
network fails to detect a
valid temperature.
READ_POUT
This command returns the most recent ADC measured value of the channel’s output power in watts.
MFR_READ_IOUT
This command returns the most recent ADC measured value of the channel’s output current, using a custom format
that provides better numeric representation granularity than the READ_IOUT command for currents whose absolute
value is between 2A and 82A.
pMbus coMManD DescripTion