ADP1048 Analog Devices, ADP1048 Datasheet - Page 53

• Manufacturer Part Number: ADP1048
• Description: Digital Power Factor Correction Controller with accurate AC Power Metering
• Manufacturer: Analog Devices

Data Sheet
IIN_OC_FAULT_RESPONSE REGISTER
This register instructs the device on actions to take due to an input overcurrent fault condition.
Table 40. Register 0x5C—IIN_OC_FAULT_RESPONSE
Bits
[7:6]
[5:3]
[2:0]
IIN_OC_WARN_LIMIT REGISTER
This register sets the accurate overcurrent threshold measured at the PFC input that causes an overcurrent warning condition.
Table 41. Register 0x5D—IIN_OC_WARN_LIMIT
Bits
[15:11]
[10:8]
[7:0]
Bit Name
Exponent
High bits
Low byte
Bit Name
Response
Retry setting
Delay times
R/W
R/W
R/W
R/W
R/W
R
R/W
R/W
Description
Return the exponent (N) used in current linear mode format (X = Y × 2
exponent register (Register 0xFE39, Bits[10:6]).
Mantissa high bits (Y[10:8]) used in current linear mode format (X = Y × 2
Mantissa low byte (Y[7:0]) used in current linear mode format (X = Y × 2
Description
These bits determine the device response to an input overcurrent fault condition.
Bit 7
0
0
1
1
Number of retry attempts following a fault condition. If the fault persists after the programmed
number of attempts, the output is disabled and remains off until the fault is cleared. A fault
condition can be cleared by a reset, a power-off/power-on sequence, or a loss of bias power. The
time between restart attempts is specified by Delay Time 2 (Bits[2:0]).
Bit 5
0
0
0
0
1
1
1
1
Delay Time 1 is the delay before the device disables the output after a fault condition is detected.
Delay Time 2 is the time between restart attempts.
Bit 2
0
0
0
0
1
1
1
1
Bit 6
0
1
0
1
Bit 4
0
0
1
1
0
0
1
1
Bit 1
0
0
1
1
0
0
1
1
Response
Do nothing.
Continue operation for the time specified by Delay Time 1 (Bits[2:0]). If the fault
persists, retry the number of times specified by the retry setting (Bits[5:3]).
Shut down, disable the output, and retry the number of times specified by the
retry setting (Bits[5:3]).
Disable the output and wait for the fault to clear. After the fault is cleared,
reenable the output.
Bit 3
0
1
0
1
0
1
0
1
Bit 0
0
1
0
1
0
1
0
1
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Number of Retries
0
1
2
3
4
5
6
Infinite
Delay Time 1
10 ms
20 ms
40 ms
80 ms
160 ms
320 ms
640 ms
1280 ms
Delay Time 2
252 ms
558 ms
924 ms
1260 ms
1596 ms
1932 ms
2268 ms
2604 ms
ADP1047/ADP1048
N
). The exponent is set in the
N
).
N
).