ADP1050ACPZ-R7 datasheet(88/93 Pages) AD

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Data Sheet

ADP1050

Table 154. Register 0xFE65—Current Value Update Rate Setting

Bits

Bit Name/Function

R/W

Description

[7:2]

Reserved

R/W

Reserved.

[1:0]

Current value

update rate

R/W

These bits specify the update rate for the current value of CS1 (READ_IIN command, Register 0x89).

By default, the current values are updated every 10 ms.

Bit 1

Bit 0

CS1 Value Update Rate (ms)

10 (defaut)

105

210

Table 155. Register 0xFE67—Open-Loop Operation Settings

Bits

Bit Name/Function

R/W

Description

Reserved

Reserved.

Pulse skipping mode enable

R/W

1 = enables pulse skipping mode. If the ADP1050 requires a modulation value that is

less than the threshold set by Register 0xFE69, pulse skipping is in use.

SR2 open-loop operation enable

R/W

This bit is set when SR2 is used in open-loop operation mode.

SR1 open-loop operation enable

R/W

This bit is set when SR1 is used in open-loop operation mode.

Reserved

R/W

Reserved.

Reserved

R/W

Reserved.

OUTB open-loop operation enable

R/W

This bit is set when OUTB is used in open-loop operation mode.

OUTA open-loop operation enable

R/W

This bit is set when OUTA is used in open-loop operation mode.

Table 156. Register 0xFE69—Pulse Skipping Mode Threshold

Bits

Bit Name/Function

R/W

Description

[7:0]

Pulse skipping mode

threshold

R/W

These bits set the modulation pulse width threshold for pulse skipping. Each LSB is 5 ns.

Table 157. Register 0xFE6A—CS3_OC_FAULT_LIMIT

Bits

Bit Name/Function

R/W

Description

[7:0]

CS3_OC_FAULT_LIMIT

R/W

The eight MSB value of the CS3 value register in Register 0xFEA9 is compared with this 8-bit

number. If the 8 MSB value is greater, the CS3_OC_FAULT flag is set.

Table 158. Register 0xFE6B—Modulation Threshold for OVP Selection

Bits

Bit Name/Function

R/W

Description

[7:0]

Modulation threshold

for conditional

OVP responses

R/W

This value sets modulation threshold for conditional OVP response. When the real-time

modulation value is above this threshold, the LARGE_MODULATION flag in Register 0xFE6C[2] is set.

Switching Frequency Range (kHz)

Resolution Corresponding to LSB (ns)

49 to 87

97.5 to 184

195.5 to 379

390.5 to 625

Rev. A | Page 87 of 92

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