ADP1055ACPZ-R7 datasheet(120/140 Pages) AD

120 / 140 page

ADP1055

Data Sheet

Rev. A | Page 120 of 140

Table 210. Register 0xFE62—LOW_TEMP_SETTING

Bits

Bit Name

R/W

Description

ADD_PZ configuration

R/W

0 = ADD_PZ is configured as a digital pole.

1 = ADD_PZ is configured as a digital zero.

[6:4]

Low temperature

threshold

R/W

If non-zero, the filter switches from the NMF (normal mode filter) to the SS filter (soft start filter) in

steps of ±4°C.

000 = regular filter operation independent of temperature unless the sensing point (configured in

Bits[1:0]) is set to GPIO2 (the filter then changes based on the GPIO2 pin).

001 = below −14°C, the soft start filter is used for regulation instead of the normal mode filter.

010 = below −10°C, the soft start filter is used for regulation instead of the normal mode filter.

011 = below −6°C, the soft start filter is used for regulation instead of the normal mode filter.

100 = below −2°C, the soft start filter is used for regulation instead of the normal mode filter.

101 = below +2°C, the soft start filter is used for regulation instead of the normal mode filter.

110 = below +6°C, the soft start filter is used for regulation instead of the normal mode filter.

111 = below +10°C, the soft start filter is used for regulation instead of the normal mode filter.

[3:2]

Low temperature

hysteresis

R/W

Each bit is 5°C of hysteresis.

00 = 5°C.

01 = 10°C.

10 = 15°C.

11 = 20°C.

[1:0]

Low temperature

sensing point

R/W

00 = reserved.

01 = external FWD temperature sensing.

10 = external REV temperature sensing.

11 = rising edge of GPIO2.

Table 211. Register 0xFE63—GPIO3_4_SNUBBER_ON_TIME

Bits

Bit Name

R/W

Description

[7:0]

Snubber on time

R/W

Maximum on time of GPIO3/GPIO4 (if SR/OUTC/OUTD goes high, then the GPIO3/GPIO4 output

goes low/high) in units of 20 ns

0x00 = 0 ns

0x01 = 20 ns

…

0xFE = 5.08 μs

0xFF = on until SRx goes high or OUTC or OUTD goes low

Table 212. Register 0xFE64—GPIO3_4_SNUBBER_DELAY

Bits

Bit Name

R/W

Description

[7:6]

GPIO4 snubber enable

R/W

00 = disable active snubber on GPIO3/GPIO4.

01 = only GPIO3 is active snubber. GPIO3 goes high after the snubber delay time in

10 = only GPIO4 is active snubber. GPIO4 goes high after the snubber delay time in

11 = GPIO3 and GPIO4 are active snubber outputs. GPIO3 is the inverse of SR1 or OUTC; GPIO4 is

the inverse of SR2 or OUTC, depending on Register 0xFE65[7].

[5:0]

Snubber delay

R/W

Dead time delay from fall of SR to rise of GPIO3/GPIO4, in units of 5 ns, regardless of the polarity of

GPIO3/GPIO4.

0x00 = 0 ns.

0x01 = 5 ns.

0x3F = 315 ns.

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