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LTC2972

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READ_IOUT

This command returns the most recent ADC measured value of the channel’s output current.

MFR_IIN_PEAK

This command returns the maximum ADC measured value of the input current. This register is reset to 0x7C00

(–225) when the LTC2972 emerges from power-on reset, when a CLEAR_FAULTS command to any page is executed,

or a channel goes through an off-to-on transition.

MFR_IIN_MIN

This command returns the minimum ADC measured value of the input current. This register is reset to 0x7BFF (ap-

proximately 225) when the LTC2972 emerges from power-on reset, when a CLEAR_FAULTS command to any page is

executed, or a channel goes through an off-to-on transition.

MFR_PIN_PEAK

This command returns the maximum ADC measured value of the input power. This register is reset to 0x7C00

(–225) when the LTC2972 emerges from power-on reset, when a CLEAR_FAULTS command to any page is executed,

or a channel goes through an off-to-on transition.

MFR_PIN_MIN

This command returns the minimum ADC measured value of the input power. This register is reset to 0x7BFF (ap-

proximately 225) when the LTC2972 emerges from power-on reset, when a CLEAR_FAULTS command to any page is

executed, or a channel goes through an off-to-on transition.

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 TSENSE network fails to detect a valid temperature.

The TSENSE network will fail to detect a valid temperature under the following conditions:

The TSENSE pin is shorted to a constant voltage.

The sense diode has an ideality factor greater than N_TS max.

Floating the TSENSE 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

LTC2972’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 TSENSE network fails to detect a

valid temperature.

PMBus COMMAND DESCRIPTION

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