ADP1055ACPZ-R7 datasheet(71/140 Pages) AD

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Data Sheet

ADP1055

Rev. A | Page 71 of 140

OT_FAULT_RESPONSE

The OT_FAULT_RESPONSE command instructs the device on actions to take due to an overtemperature fault condition. The device notifies the

host and sets the TEMPERATURE bit in the STATUS_BYTE register and the OT_FAULT bit in the STATUS_TEMPERATURE register.

Table 52. Register 0x50—OT_FAULT_RESPONSE

Bits

Bit Name

R/W

Description

[7:6]

Response

R/W

Determine the device response to an overtemperature fault condition.

Bit 7

Bit 6

Response

Do nothing.

Continue operation for the delay time (Bits[2:0]). If the fault persists, retry the

number of times specified by Bits[5:3].

Shut down, disable the output, and respond as programmed in the retry

setting (Bits[5:3]).

Disable the output while the fault is present. Operation resumes and the

output is enabled when the fault condition no longer exists.

[5:3]

Retry setting

R/W

Number of retry attempts following a fault condition. A fault condition can be cleared by a reset,

a power-off/power-on sequence, or a loss of bias power.

Bit 5

Bit 4

Bit 3

Number of Retries

Infinite

[2:0]

Delay times

R/W

Number of delay time units (see Register 0xFE3E).

OT_WARN_LIMIT

The OT_WARN_LIMIT command sets the threshold value (in °C) for an overtemperature warning condition. The device notifies the

host and sets the TEMPERATURE bit in the STATUS_BYTE register and the OT_WARNING bit in the STATUS_TEMPERATURE register.

Table 53. Register 0x51—OT_WARN_LIMIT

Bits

Bit Name

R/W

Description

[15:11]

Exponent-N

R/W

Twos complement N-exponent used in linear data format (X = Y × 2N).

[10:0]

Mantissa-Y

R/W

Twos complement Y-mantissa used in linear data format (X = Y × 2N).

VIN_OV_FAULT_LIMIT

The VIN_OV_FAULT_LIMIT command sets the upper voltage threshold (in volts) measured at the sense/input pin that causes an

overvoltage fault condition.

Table 54. Register 0x55—VIN_OV_FAULT_LIMIT

Bits

Bit Name

R/W

Description

[15:11]

Exponent-N

R/W

Twos complement N-exponent used in linear data format (X = Y × 2N).

[10:0]

Mantissa-Y

R/W

Twos complement Y-mantissa used in linear data format (X = Y × 2N).

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