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ADP1048WARQZ-R7 データシート(PDF) 64 Page - Analog Devices

部品番号 ADP1048WARQZ-R7
部品情報  Digital Power Factor Correction Controller with Accurate AC Power Metering
PDF  82 Pages
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
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ADP1048WARQZ-R7 データシート(HTML) 64 Page - Analog Devices

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ADP1048W
Data Sheet
OT_FAULT_LIMIT REGISTER
This register sets the overtemperature fault threshold. The debounce time of the overtemperature fault flag is 100 ms.
Table 87. Register 0xFE19—OT_FAULT_LIMIT
Bits
Bit Name
R/W
Description
[7:0]
OT fault threshold
R/W
Overtemperature fault threshold. This register, adding 0 as the MSB, results in a 9-bit 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 overtemperature fault flag is set.
These eight bits provide 256 threshold settings from 0 mV to 800 mV (one LSB = 800 mV/256 =
3.125 mV). However, the lowest allowed value is 9.375 mV (0x03), and the highest allowed
value is 781.25 mV (0xFA).
Bit 7
Bit 6
…
Bit 3
Bit 2
Bit 1
Bit 0
OTP Threshold (mV)
0
0
…
0
0
1
1
9.375
0
0
…
0
1
0
0
12.5
0
0
…
0
1
0
1
15.875
…
…
…
…
…
…
…
…
1
1
…
1
0
0
1
778.125
1
1
…
1
0
1
0
781.25
OT_WARN_LIMIT REGISTER
This register sets the overtemperature warning threshold. The debounce time of the overtemperature warning flag is 100 ms.
Table 88. Register 0xFE1A—OT_WARN_LIMIT
Bits
Bit Name
R/W
Description
[7:0]
OT warning threshold
R/W
Overtemperature warning threshold. This register, adding 0 as the MSB, results in a 9-bit 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 overtemperature warning flag is set.
These eight bits provide 256 threshold settings from 0 mV to 800 mV (one LSB = 800 mV/256 =
3.125 mV). However, the lowest allowed value is 9.375 mV (0x03), and the highest allowed
value is 781.25 mV (0xFA).
Bit 7
Bit 6
…
Bit 3
Bit 2
Bit 1
Bit 0
OTP Threshold (mV)
0
0
…
0
0
1
1
9.375
0
0
…
0
1
0
0
12.5
0
0
…
0
1
0
1
15.875
…
…
…
…
…
…
…
…
1
1
…
1
0
0
1
778.125
1
1
…
1
0
1
0
781.25
Rev. 0 | Page 64 of 82



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