ADP1048 Analog Devices, ADP1048 Datasheet - Page 73

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

Data Sheet
EXPONENT REGISTER
This register reads and writes exponents (N) for PIN, VIN, and IIN.
Table 118. Register 0xFE39—Exponent
Bits
[15:11]
[10:6]
[5:3]
[2:0]
READ UPDATE RATE REGISTER
Table 119. Register 0xFE3A—Read Update Rate
Bits
[7:3]
[2:0]
VIN SCALE MONITOR REGISTER
Table 120. Register 0xFE3B—VIN Scale Monitor
Bits
[15:14]
[13:11]
10
[9:0]
IIN_GSENSE REGISTER
Table 121. Register 0xFE3C—IIN_GSENSE
Bits
[15:11]
10
[9:0]
Bit Name
RSVD
Averaging window
Bit Name
RSVD
Input current
exponent
Input voltage
exponent
Input power exponent
Bit Name
RSVD
Exponent
RSVD
Mantissa
Bit Name
Exponent
RSVD
Mantissa
R/W
R
R/W
R/W
R/W
R/W
R/W
R
R/W
R
R/W
R/W
R/W
R
R/W
R
R/W
Description
Reserved.
Sets the exponent for the input current.
Sets the exponent for the input voltage.
Sets the exponent for the input power.
Description
Reserved.
These bits set the averaging window for the power current and voltage readings; rms values
from one half ac line cycle are averaged over the programmed number of half ac line cycles.
Bit 2
0
0
0
0
1
1
1
1
Description
Reserved.
Write the exponent (N) in twos complement format (K
Reserved.
Mantissa (Y[9:0]) used in K
Description
Write the exponent (N) in twos complement format (IIN_GSENSE = Y × 2
Reserved.
Mantissa (Y[9:0]) used in IIN linear mode format (IIN_GSENSE = Y × 2
Bit 1
0
0
1
1
0
0
1
1
Rev. 0 | Page 73 of 84
Bit 0
0
1
0
1
0
1
0
1
VIN
linear mode format (K
Number of Half AC Line Cycles
0
16
64
128
512
1024
4096
8192
VIN
= Y × 2
VIN
= Y × 2
N
).
N
).
ADP1047/ADP1048
N
).
N
).