參數(shù)資料
型號： ADE7763ARS
廠商： ANALOG DEVICES INC
元件分類： 電源管理
英文描述： Single-Phase Active and Apparent Energy Metering IC
中文描述： 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20
封裝： MO-150AE, SSOP-20
文件頁數(shù)： 42/56頁
文件大小： 1328K
代理商： ADE7763ARS
ADE7763
Rev. A | Page 42 of 56
2
1
2
2
2
1
2
2
2
2
2
1
IRMS
I
×
×
1
SET INTERRUPT ENABLE FOR ZERO
CROSSING ADDR. 0x0A = 0x0010
IRMSOS
=
I
I
IRMS
I
×
32768
(63)
whe
correction for input
I
1
and
I
2
, respectively.
App
Apparent energy gain calibration is provided for both meter-to-
meter gain adjustment and for settin
and
IRMS
2
are rms regis r values without offset
g the VAh/LSB constant.
VAENERGY
=
RESET THE INTERRUPT STATUS
READ REGISTER ADDR. 0x0C
re
IRMS
1
te
INTERRUPT
NO
YES
0
READ VRMS OR IRMS
ADDR. 0x17; 0x16
RESET THE INTERRUPT STATUS
READ REGISTER ADDR. 0x0C
Figure 77. Synchronizing VRMS and IRMS Readings with Zero Crossings
Voltage rms compensation is done after the square root.
VRMS
=
VRMS0
+
VRMSOS
(60)
where:
VRMS0
is the rms measurement without offset correction.
VRMS
is linear from full-scale to full-scale/20.
To calibrate the offset, two VRMS measurements are required,
for example, at V
nominal
and V
nominal
/10. V
nominal
is set at half of the
full-scale analog input range so that the smallest linear VRMS
reading is at V
nominal
/10.
VRMSOS
=
arent Energy
1
×
×
12
2
1
VAGAIN
VADIV
VAENERGY
initial
(64)
tion. It
used to calibrate individual meters.
App
rms
test points. Apparent energy gain and watt gain compensation
requ
s and watt offset correction equire
a lower test current. Apparent energy gain calibration can be
done simultaneously with the wa
using line cycle accumulation. In this case,
LAENERGY
and
LVAENERGY
, the
ion should be performed bef
the most efficient use of the c rent
tt-hour gain calibration
line cycle accumulation apparent energy
registers, are both read following the line cycle accumulation
interrupt. Figure 78 shows a flowchart for calibrating active and
appa
rent energy simultaneously.
VADIV
is similar to the CFDEN for the watt-hour calibra
should be the same across all meters and determines the VAh/LSB
constant.
VAGAIN
is
arent energy gain calibrat
offset correction to make
ore
ur
ire testing at I
b
, while rm
r
1
2
2
2
1
V
V
VRMS
V
VRMS
V
×
×
1
(61)
where
VRMS
1
and
VRMS
2
are rms register values without offset
correction for input
V
1
and
V
2
, respectively.
If the range of the 12-bit, twos complement VRMSOS register is
not enough, use the voltage channel offset register, CH2OS, to
correct the VRMS offset.
Current rms compensation is performed before the square root:
IRMS
2
=
IRMS0
2
+ 32768 ×
IRMSOS
(62)
ut offset correction.
m full scale to full
ts are required,
at alf of the full-scale
S reading is at
VAGAIN
=
INT
×
12
)
(
)
(
2
1
nominal
IB
expected
IB
LVAENERGY
LVAENERGY
(65
LVAENERGY
)
IB
(
expected
)
=
INT
×
×
×
)
(
s/h
3600
s
time
on
Accumulati
constant
LSB
VAh
I
V
B
nominal
(6
6)
according to Equation 34. The
VAh
represented by the
VAENERGY register is
VAh
=
VAENERGY
×
VAh
/
LSB constant
(67)
The
VAh/LSB
constant can be verified using this equation:
The accumulation time is determined from Equation 33, and
the line period can be determined from the period register
where
IRMS0
is the rms measurement witho
The current rms ca ula
scale/100.
tio is linear fro
To calibrate this offset, two IRMS measuremen
for example, at I
b
and I
MAX
/50. I
MAX
is set
analog input range so that the smallest linear IRM
I
MAX
/50.
h
LVAENERGY
s
time
on
Accumulati
VA
constant
LSB
VAh
3600
)
(
×
=
(68)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADE7763ARSRL 制造商:Analog Devices 功能描述:Energy Measurement 20-Pin SSOP T/R
ADE7763ARSZ 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測量 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:*
ADE7763ARSZ 制造商:Analog Devices 功能描述:IC, SINGLE PHASE ENERGY METER, SSOP-20
ADE7763ARSZRL 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測量 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:*
ADE7763ARSZRL 制造商:Analog Devices 功能描述:IC, SINGLE PHASE ENERGY METER, SSOP-20
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