ADP1055ACPZ-R7 datasheet(65/140 Pages) AD

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Data Sheet

ADP1055

Rev. A | Page 65 of 140

FREQUENCY_SWITCH

The FREQUENCY_SWITCH command sets the switching frequency (in kHz) for the PMBus device. For a list of all supported switching

frequencies, see Table 244.

Table 32. Register 0x33—FREQUENCY_SWITCH (Requires Use of the GO Bit in Register 0xFE00)

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_ON

The VIN_ON command sets the value of the input voltage (V rms) at which the device starts power conversion. Setting VIN_ON = 0

effectively disables this function.

Table 33. Register 0x35—VIN_ON

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_OFF

The VIN_OFF command sets the value of the input voltage (V rms) at which the device stops power conversion. VIN_OFF is not checked

until the device reaches the regulation voltage or TON_MAX has expired.

Table 34. Register 0x36—VIN_OFF

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).

INTERLEAVE

The INTERLEAVE command is used to arrange multiple devices so that their switching periods can be distributed in time.

Table 35. Register 0x37—INTERLEAVE

Bits

Bit Name

R/W

Description

[15:12]

Reserved

Reserved.

[11:8]

Group ID number

R/W

Group identification number.

[7:4]

Number in group

R/W

Number of units in the group.

[3:0]

Interleave order

R/W

Interleave order for this unit.

0000 = 0 × 22.5° (0 × tSW/16).

0001 = 1 × 22.5° (1 × tSW/16).

0010 = 2 × 22.5° (2 × tSW/16).

0011 = 3 × 22.5° (3 × tSW/16).

…

1111 = 15 × 22.5° (15 × tSW/16).

IOUT_CAL_GAIN

The IOUT_CAL_GAIN command sets the ratio of the voltage at the current sense pins to the sensed current (in mΩ).

Table 36. Register 0x38—IOUT_CAL_GAIN

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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