ADM1041ARQ datasheet(54/64 Pages) AD

Part #	ADM1041ARQ

Description	Secondary-Side Controller with Current Share and Housekeeping

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ADM1041

Rev. A | Page 54 of 64

TRIM TABLE

This table shows all of the trims that can be set in the ADM1041.

Table 44.

Description

Name

Range

Steps

Step Size

Reg

Bit No.

Set Load Voltage. Trim output from

differential amplifier to set voltage at load.

load_v

1.7 V–2.3 V

(at input pins)

255

1.74 mV–3.18 mV

19h

7–0

Set Load OV. Trim calibrated output from

remote sense amplifier to set load OV

threshold.

load_ov

105%–120%

Offset input

255

1.6 mV

08h

7–0

Set False UV Clamp Threshold. Fine trim

output to set voltage before OR-FET in case

of load OV (at input pins).

uv_clamp

1.3 V–2.1 V

255

1.94 mV–5.07 mV

18h

7–0

Set Local UVP Threshold. Fine trim output

from local sense buffer to set UVP

threshold (at input pins).

local_uvp

1.3 V–2.1V

255

1.94 mV–5.07 mV

09h

7–0

Set Local OVP Threshold. Fine trim output

from sense buffer to set OVP threshold (at

input pins).

local_ovp

1.9 V–2.85 V

255

2.48 mV–5.59 mV

0Ah

7–0

External Divider Offset Trim Range.

os_

div_range

±5 mV

±10 mV

±20 mV

20 µV

39 µV

78 µV

16h

5-3

External Divider Offset Trim. Trim out offset

due to resistor divider tolerances.

os_div

255

14h

7–0

DC Offset Trim Range.

os_dc_range

±8 mV

±15 mV

±30 mV

30 µV

60 µV

120 µV

17h

3–0

Current Sense DC Offset Trim. Trim out

amplifier dc offset.

os_dc

255

15h

7–0

Calibrate Current Sense Range. Differential

sense input, six ranges configurable.

ISENSE_range

9.5 to 12.0 mV

12.0 to 16.0 mV

16.0 to 20.0 mV

20.0 to 26.0 mV

26.0 to 34.0 mV

34.0 to 44.5 mV

16h

2–0

Current Transformer Gain Range.

ct_range

0.45 to 0.68 V

0.79 to 1.2 V

17h

5

Calibrate Current Sense. ISHARE = 2.0 V.

ISHARE_slope

127

8 mV (at SHRO)

06h

7–1

Current Share Offset. Trim offset to be

added to ISHARE output.

ISHARE_offset

0 to 1.25 V (at SHRO)

255

5.5 mV

05h

7–0

Current Limit Trim. Current sense level

where current limiting will start.

curr_limit

105%–130% (SHRO

2.1 V–2.6 V)

31

26 mV (at SHRO)

04h

7–3

OTP Sense Threshold.

otp_trim (at

input pins)

2.1 V–2.5 V

15

27 mV

0Bh

7–4

Set AC Sense Threshold.

acsns_thresh

1.10 V–1.45 V

31

14 mV

0Ch

7–3

Set AC Sense Hysteresis.

acsns_hyst

200 mV–550 mV

7

50 mV

0Ch

2–0

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