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STPMC1 Datasheet(PDF) 47 Page - STMicroelectronics

No. de pieza STPMC1
Descripción Electrónicos  Programmable poly-phase energy calculator IC
PDF  77 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STPMC1 Datasheet(HTML) 47 Page - STMicroelectronics

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STPMC1
Theory of operation
Doc ID 15728 Rev 6
47/77
0.4 PRD:
●
period: 12-bit line period measurement (see paragraph
9.6). By default it is calculated
from R-phase signal, if it is missing from S-phase then from T-phase. The value of the
period can be calculated from the decimal value of period as:
Equation 10
●
DC uN: 16-bit DC component of voltage channel of NDSP. It may be DAN-V or DAH
according to the value of ENH bit. For example it is DC offset in sigma delta uN if
ENH=0, or DC value of magnetic field if ENH is set and a magnetic sensor is connected
via STPMSx on DAH input.
9.17.2
Group 1 data records
1.1 DMR:
●
uR MOM: 12-bit momentary value of R phase voltage
●
iR MOM: 16-bit momentary value of R phase current
1.2 DMS:
●
uS MOM: 12-bit momentary value of S phase voltage
●
iS MOM: 16-bit momentary value of S phase current
1.3 DMT:
●
uT MOM: 12-bit momentary value of T phase voltage
●
iT MOM: 16-bit momentary value of T phase current
1.4 DMN:
●
sI RMS: 12-bit RMS value of the sum of all the instantaneous currents (iR + iS + iT + iN)
divided by four:
MCLK
6
f
2
period
T
⋅
=
Figure 15.
Group 1 data records
DMN
DMR
DMS
DMT
parity
iR MOM
uR MOM
parity
iS MOM
uS MOM
parity
iT MOM
uT MOM
parity
iN MOM
sI RMS
12 bit
4 bit
16 bit
DMN
DMR
DMS
DMT
parity
iR MOM
uR MOM
parity
iR MOM
uR MOM
parity
iS MOM
uS MOM
parity
iS MOM
uS MOM
parity
iT MOM
uT MOM
parity
iT MOM
uT MOM
parity
iN MOM
sI RMS
parity
iN MOM
sI RMS
12 bit
12 bit
4 bit
4 bit
4 bit
16 bit
16 bit
DMN
DMR
DMS
DMT
parity
iR MOM
uR MOM
parity
iS MOM
uS MOM
parity
iT MOM
uT MOM
parity
iN MOM
sI RMS
12 bit
4 bit
16 bit
DMN
DMR
DMS
DMT
parity
iR MOM
uR MOM
parity
iR MOM
uR MOM
parity
iS MOM
uS MOM
parity
iS MOM
uS MOM
parity
iT MOM
uT MOM
parity
iT MOM
uT MOM
parity
iN MOM
sI RMS
parity
iN MOM
sI RMS
12 bit
12 bit
4 bit
4 bit
4 bit
16 bit
16 bit



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