ADP1047ARQZ-R7 datasheet(78/84 Pages) AD

78 / 84 page

ADP1047/ADP1048

Data Sheet

Rev. 0 | Page 78 of 84

VAC ADC OFFSET TRIM REGISTER

This register must be unlocked for write access; see Table 61.

Table 143. Register 0xFE53—VAC ADC Offset Trim

Bits

Bit Name

R/W

Description

[7:0]

VAC ADC offset trim

R/W

This register calibrates the VAC ADC offset (the offset is always subtracted from the ADC output).

CS ADC OFFSET TRIM FOR 500 mV RANGE REGISTER

This register must be unlocked for write access; see Table 61.

Table 144. Register 0xFE54—CS ADC Offset Trim for 500 mV Range

Bits

Bit Name

R/W

Description

[7:0]

CS ADC offset trim

R/W

This register calibrates the CS current sense offset (the offset is always subtracted from the ADC

output).

CS ADC GAIN TRIM FOR HIGH (750 mV) RANGE REGISTER

This register must be unlocked for write access; see Table 61.

Table 145. Register 0xFE7E—CS ADC Gain Trim for High (750 mV) Range

Bits

Bit Name

R/W

Description

Gain polarity

R/W

1 = negative gain is introduced.

0 = positive gain is introduced.

[6:0]

CS ADC gain trim

R/W

This register calibrates the CS current sense gain.

CS ADC OFFSET TRIM FOR HIGH (750 mV) RANGE REGISTER

This register must be unlocked for write access; see Table 61.

Table 146. Register 0xFE7F—CS ADC Offset Trim for High (750 mV) Range

Bits

Bit Name

R/W

Description

[7:0]

CS ADC offset trim

R/W

This register calibrates the CS current sense offset (the offset is always subtracted from the ADC

output).

LATCHED FLAG REGISTERS

The bits in the latched flag registers remain set (latched) to allow users to detect an intermittent fault. Reading a latched flag register resets

the flags in that register.

Table 147. Register 0xFE80—Latched Flag 0

Bits

Bit Name

R/W

Description

MAX_MODULATION

1 = maximum modulation limit is reached.

MIN_MODULATION

1 = minimum modulation limit is reached.

OLP

1 = one of the two voltage dividers is probably disconnected or malfunctioning.

FAST_OVP

1 = the threshold set for the comparator on the OVP pin has been crossed.

AC_PERIOD

1 = controller is not able to detect the ac line period; the maximum value of the period is used

and this flag is set.

BROWN_OUT

1 = VAC is lower than the value stored in VIN_ON (Register 0x35).

SOFT_START

1 = system is in soft start sequence; fast loop filter is in use.

INRUSH

1 = INRUSH control relay is off.

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