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Data Sheet

ADP1050

VOUT_MARGIN_LOW

The VOUT_MARGIN_LOW command sets the target voltage, to which the output changes when the OPERATION command is set to

margin low. The VOUT_TRANSITION_RATE command is used if this command is modified while the output is active and in a steady-

state condition.

Table 27. Register 0x26—VOUT_MARGIN_LOW

Bits

Bit Name/Function

R/W

Description

[15:0]

Mantissa

R/W

Sets the margin low value for the output voltage, in volts.

16-bit unsigned integer Y value for linear format: V = Y × 2N.

N is defined by the VOUT_MODE command.

3:1

MUX

LIMITER

VOUT_MAX

OPERATION

COMMAND

VOUT_MARGIN_HIGH

VOUT_MARGIN_LOW

VOUT_TRIM

VOUT_CAL_OFFSET

VOUT_COMMAND

VOUT_

SCALE_

LOOP

REFERENCE

VOLTAGE

EQUIVALENT

Figure 53. Conceptual View of the Output Voltage Related Commands

VOUT_TRANSITION_RATE

When the ADP1050 receives either a VOUT_COMMAND command or an OPERATION command (margin high, margin low) that causes the

output voltage to change, this command sets the rate, in mV/µs, at which the VS± pins change voltage. This commanded rate of change does

not apply when the unit is turned on or off. The maximum positive value (0x7BFF) of the two data bytes indicates that the unit makes the

transition as quickly as possible. Only the limited options in Table 28 are supported by the ADP1050.

Table 28. Register 0x27—VOUT_TRANSITION_RATE (Rate-of-Change Options Supported by the ADP1050)

Rate of Change (mV/μs)

1001100000001101 (0x980D)

0.0015625

1010000000001101 (0xA00D)

0.003125

1010100000001101 (0xA80D)

0.00625

1011000000001101 (0xB00D)

0.0125

1011100000001101 (0xB80D)

0.025

1100000000001101 (0xC00D)

0.050

1100100000001101 (0xC80D)

0.1

1101000000001101 (0xD00D)

0.2

0111101111111111 (0x7BFF)

Infinite (default)

Table 29. Register 0x27—VOUT_TRANSITION_RATE

Bits

Bit Name/Function

R/W

Description

[15:11]

Exponent

R/W

5-bit twos complement N value for linear format: X = Y × 2N.

[10:0]

Mantissa

R/W

11-bit twos complement Y value for linear format: X = Y × 2N.

Rev. A | Page 55 of 92

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