cs5467 Cirrus Logic, Inc., cs5467 Datasheet - Page 30

• Manufacturer Part Number: cs5467
• Description: Four-channel Power / Energy Ic
• Manufacturer: Cirrus Logic, Inc.

8.2.2 Instantaneous Current (I1, I2), Voltage (V1, V2), and Power (P1, P2)
8.2.3 Active Power (P1
8.2.4 RMS Current (I1
8.2.5 Instantaneous Quadrature Power (Q1, Q2)
8.2.6 Reactive Power (Q1
30
MSB
MSB
MSB
MSB
MSB
-(2
-(2
-(2
-(2
2
-1
taneous power, P1 ( P2 ). These are two's complement values in the range of -1.0 ≤ value < 1.0, with the binary
point to the right of the MSB.
0
0
0
0
I1 ( I2 ) and V1 ( V2 ) contain instantaneous current and voltage, respectively, which are multiplied to yield instan-
)
)
)
)
Address: 1 ( I1 ), 2 ( V1 ), 3 ( P2 ), 7 ( I2 ), 8 ( V2 ), 9 ( P2 )
Address: 4 ( P1
Instantaneous power is averaged over each low-rate interval ( N samples) to compute active power, P1
( P2
right of the MSB.
Address: 5 ( I1
I1
lated each low-rate interval. These are unsigned values in the range of 0 ≤ value < 1.0, with the binary point
to the left of the MSB.
Address: 14 ( Q1 ), 17 ( Q2 )
Instantaneous quadrature power, Q1 ( Q2 ), the product of voltage1 (voltage2) shifted 90 degrees and current1
(current2). These are two's complement values in the range of -1.0 ≤ value < 1.0, with the binary point to the
right of the MSB.
Address: 13 ( Q1
Reactive power Q1
values in the range of -1.0 ≤ value < 1.0, with the binary point to the right of the MSB.
RMS
2
2
2
2
2
AVG
-1
-1
-2
-1
-1
( I2
). These are two's complement values in the range of -1.0 ≤ value < 1.0, with the binary point to the
RMS
2
2
2
2
2
-2
-2
-3
-2
-2
) and V1
RMS
AVG
AVG
2
2
2
2
2
), 6 ( V1
-3
-3
-4
-3
-3
RMS
AVG
), 10 ( P2
AVG
), 16 ( Q2
RMS
Avg
, I2
( Q2
, P2
2
2
2
2
2
-4
-4
RMS
-5
-4
-4
( V2
, Q2
RMS
AVG
AVG
AVG
AVG
), 11 ( I2
RMS
) is Q1 ( Q2 ) averaged over every N samples. These are two's complement
AVG
2
2
2
2
2
) and Voltage (V1
)
-5
-5
-6
-5
-5
)
)
) contain the root mean square (RMS) values of I1 ( I2 ) and V1 ( V2 ), calcu-
)
RMS
2
2
2
2
2
-6
-6
-7
-6
-6
), 12 ( V2
2
2
2
2
2
-7
-7
-8
-7
-7
RMS
RMS
.....
.....
.....
.....
.....
)
, V2
2
2
2
2
2
-17
-17
RMS
-18
-17
-17
)
2
2
2
2
2
-18
-18
-19
-18
-18
2
2
2
2
2
-19
-19
-20
-19
-19
2
2
2
2
2
-20
-20
-21
-20
-20
2
2
2
2
2
-21
-21
-22
-21
-21
CS5467
2
2
2
2
2
-22
-22
-23
-22
-22
DS714F1
LSB
LSB
LSB
LSB
LSB
2
2
AVG
2
2
2
-23
-23
-24
-23
-23