LTC2978A View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC2978A

8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement

Linear Technology 

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LTC2978A

PMBus Command Description

STATUS_INPUT

The STATUS_INPUT command returns the summary of the VIN faults or warnings which have occurred, as shown in

the following table:

STATUS_INPUT Data Contents

BIT(S) SYMBOL

b[7] Status_input_ov_fault

b[6] Status_input_ov_warn

b[5] Status_input_uv_warn

b[4] Status_input_uv_fault

b[3] Status_input_off

b[2] IIN overcurrent fault

b[1] IIN overcurrent warn

b[0] PIN overpower warn

OPERATION

VIN Overvoltage fault

VIN Overvoltage warning

VIN Undervoltage warning

VIN Undervoltage fault

Unit is off for insufficient input voltage.

Not supported. Always returns 0.

Not supported. Always returns 0.

Not supported. Always returns 0.

STATUS_TEMPERATURE

The STATUS_TEMPERATURE command returns the summary of the temperature faults or warnings which have oc-

curred, as shown in the following table:

STATUS_TEMPERATURE Data Contents

Bit(s) Symbol

Operation

b[7] Status_temperature_ot_fault Overtemperature fault.

b[6] Status_temperature_ot_warn Overtemperature warning.

b[5] Status_temperature_ut_warn Undertemperature warning.

b[4] Status_temperature_ut_fault Undertemperature fault.

b[3] Reserved

Reserved. Always returns 0.

b[2] Reserved

Reserved. Always returns 0.

b[1] Reserved

Reserved. Always returns 0.

b[0] Reserved

Reserved. Always returns 0.

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