ADP1055ACPZ-R7 datasheet(75/140 Pages) AD

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Data Sheet

ADP1055

Rev. A | Page 75 of 140

Bits

Bit Name

R/W

Description

[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).

TOFF_DELAY

The TOFF_DELAY command sets the turn-off delay time in milliseconds (ms) from stop (ON_OFF_CONFIG) until the device stops

transferring energy to the output. The range is 0 ms to 1023 ms, in steps of 1 ms. The calculated value is rounded down.

Table 66. Register 0x64—TOFF_DELAY

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).

TOFF_FALL

The TOFF_FALL command sets the fall time (in ms) from the end of the turn-off delay time to voltage = 0 V.

Table 67. Register 0x65—TOFF_FALL

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).

TOFF_MAX_WARN_LIMIT

The TOFF_MAX_WARN_LIMIT command sets the upper time threshold (in ms) that causes a TOFF_MAX warning condition, that is,

the time it takes to power down the output voltage from VOUT to 12.5% of VOUT. The device notifies the host and sets the NONE_OF_THE_

ABOVE bit in the STATUS_BYTE register, the VOUT bit in the STATUS_WORD register, and the TOFF_MAX_WARNING bit in the

STATUS_VOUT register.

Table 68. Register 0x66—TOFF_MAX_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).

POUT_OP_FAULT_LIMIT

The POUT_OP_FAULT_LIMIT command sets the upper power threshold (in watts) measured at the sense/output pin that causes an

output overpower fault condition.

Table 69. Register 0x68—POUT_OP_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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