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ADP1046AW Datasheet(PDF) 58 Page - Analog Devices

Part No. ADP1046AW
Description  Digital Controller for Isolated
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADP1046AW Datasheet(HTML) 58 Page - Analog Devices

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ADP1046AW
Data Sheet
Rev. 0 | Page 58 of 88
Table 47. Register 0x2F—OTP Threshold
Bits
Bit Name
R/W
Description
[7:0]
OTP threshold
R/W
This register, adding 0 as the MSB, results in a 9-bit OTP threshold value. This 9-bit value is compared to
the nine MSBs of the RTD ADC reading. If the RTD ADC reading is lower than the threshold set by these
bits, the OTP flag is set. This 8-bit register provides 256 threshold settings from 0 mV to 800 mV. One LSB
equates to 800 mV/256 = 3.125 mV. Some of the threshold settings at the high and low ends of the
range are not allowed. The OTP flag has a hysteresis of 16 mV.
Bit 7
Bit 6
Bit 3
Bit 2
Bit 1
Bit 0
OTP Limit (mV)
0
0
0
0
0
0
0
0
0
0
0
0
1
3.125
0
0
0
0
1
0
6.25
0
0
0
0
1
1
9.375
0
0
0
1
0
0
12.5
0
0
0
1
0
1
15.625
1
1
1
0
0
1
778.125
1
1
1
0
1
0
781.25
1
1
1
1
1
1
796.875
Table 48. Register 0x30—OrFET
Bits
Bit Name
R/W
Description
7
OrFET enable
delay
R/W
0 = delay of 328 µs, equivalent to 9 bits of (VS1 − VS2) data.
1 = delay of 164 µs, equivalent to 8 bits of (VS1 − VS2) data.
[6:5]
OrFET enable
threshold
R/W
These bits program the voltage difference between VS1 and VS2 before the OrFET is enabled. The VS1
and VS2 input pins are used to control the OrFET enable function.
Bit 6
Bit 5
ADC Full-Scale
Voltage Difference from VS1 to VS2
Range (%)
VOUT = 12 V (mV)
VOUT = 48 V (mV)
0
0
−2
−384
−1504
0
1
−1
−192
−752
1
0
−0.5
−96
−376
1
1
0
0
0
[4:2]
Fast OrFET
threshold
R/W
These bits program the threshold voltage difference between CS2+ and CS2− at which the OrFET is
disabled. The CS2+ and CS2− input pins are used to control this function. The internal circuit is an
analog comparator.
Bit 4
Bit 3
Bit 2
Voltage Difference from CS2+ to CS2− (mV)
0
0
0
−3
0
0
1
−6
0
1
0
−9
0
1
1
−12
1
0
0
−15
1
0
1
−18
1
1
0
−21
1
1
1
−24
1
Fast OrFET
debounce
R/W
These bits determine the debounce on the fast OrFET control before it disables the OrFET.
0 = 40 ns.
1 = 200 ns.
0
Fast OrFET
bypass
R/W
Set this bit to completely bypass fast OrFET control. The action programmed for the OrFET flag is
executed, unless the flag is programmed to be ignored.


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