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ADM1041AARQZ-REEL Datasheet(PDF) 45 Page - Analog Devices

Part # ADM1041AARQZ-REEL
Description  Secondary-Side Controller with Current Share and Housekeeping
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADM1041AARQZ-REEL Datasheet(HTML) 45 Page - Analog Devices

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ADM1041A
Rev. 0 | Page 45 of 56
Bit No.
Name
R/W
Description
3
FG Polarity
R/W
Sets polarity of OrFET gate control (FG pin): 0 = inverted (low = on); 1 = normal (low =
off).
2
Micro Share Clamp
R/W
Allow the microprocessor to directly control the share clamp. 0 = normal share clamp
operation, that is, not clamped; 1 = assert share clamp, that is, clamped. See Table 43.
1
Micro CBD Write
R/W
Allow the microprocessor to write directly to CBD as a possible way of adding an
additional port. This might be a blinking LED or a fail signal to the system. See Table 43.
0
Micro CBD Clear
R/W
Microprocessor clear of CBD latch (if configured as latching) folowing an SMBAlert.
See Table 43.
Table 29. Register 14h, Current-Sense Divider Error Trim 1. Power-On Default from EEPROM Register 8114h During Power-Up
Bit No.
Name
R/W
Description
7–0
Current Sense Offset Trim
R/W
Trim-out offset due to external resistor divider tolerances (for common-mode
correction). This register is normally written to during the user calibration.
Table 30. Register 15h, Current Sense Amp Offset Trim 2. Power-On Default from EEPROM Register 8115h During Power-Up
Bit No.
Name
R/W
Description
7–0
Current Sense DC offset Trim
R/W
Trim-out current sense amplifier offset (dc offset correction). Increasing this results in
more offset for the current sense. This register is normally written to during the user
calibration. It is used with Reg06H.
Table 31. Register 16h, Current-Sense Options 1. Power-On Default from EEPROM Register 8116h During Power-Up
Bit No.
Name
R/W
Description
7–6
Reserved
R/W
Don’t Care
5–3
Divider Trim
R/W
External Divider Tolerance Trim Range (Common-Mode Trim Range).
b5
b4
b3
Range
External Resistor Tolerance
0
0
0
−5 mV
−0.25%
0
0
1
−10 mV
−0.50%
0
1
0
−20 mV
−1.00%
1
0
0
+5 mV
+0.25%
1
0
1
+10 mV
+0.50%
1
1
0
+20 mV
+1.00%
2–0
Current-Sense Gain
R/W
Gain Selector
b2
b1
b0
Gain
Range
0
0
0
65x
34.0 mV to 44.5 mV
0
0
1
85x
26.0 mV to 34.0 mV
0
1
0
110x
20.0 mV to 26.0 mV
1
0
0
135x
16.0 mV to 20.0 mV
1
0
1
175x
12.0 mV to 16.0 mV
1
1
0
230x
9.5 mV to 12.0 mV


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