收藏本站
ADE7758
If it is not known, the line period is available in the ADE7758
frequency register, FREQ (0x10). To configure line period
Data Sheet
14804d in the AWATTHR register. This is equivalent to
?1.132% error.
measurement, select the phase for period measurement in the
MMODE[1:0] and set LCYCMODE[7]. Equation 72 shows how
to determine the value that needs to be written to xPHCAL
Error =
14804
7318 –
2
14804
= ? 0 . 01132 = ? 1 . 132 %
using the period register measurement.
xPHCAL =
2
The Phase Error in degrees using Equation 66 is 0.374°.
Phase Error ( ° ) = – Arc sin ?
? = 0 . 374 °
Phase Error ×
9 . 6 μs
PHCAL _ LSB _ Weight
×
FREQ [11 : 0]
360 °
(72)
? ? 0. 01132 ?
? 3 ?
Example: Phase Calibration Using Line Accumulation
This example shows only Phase A phase calibration. All three
PHCAL registers can be calibrated simultaneously using the
same method.
Using Equation 72, the value written to APHCAL (0x3F), if at
50 Hz, the FREQ (0x10) register = 2085d, is 17d. Note that a
PHCAL_LSB_Weight of 1.2 μs is used because the %Error is
negative.
× = 17 = 0 x 11
For this example, I TEST = 10 A, V NOM = 220 V, power factor = 0.5
inductive, and frequency = 50 Hz. Also, LINECYC = 0x800.
APHCAL = 0 . 374 ° ×
9 . 6
1 . 2
2085
360
With I TEST , V NOM , and 0.5 inductive power factor, the example
ADE7758 meter shows 7318d in the AWATTHR (0x01) register.
For unity power factor (after gain calibration), the meter shows
STEP 1
SET MMODE,
LCYCMODE,
LINECYC AND
MASK REGISTERS
STEP 2
SET UP SYSTEM
FOR I MIN , V NOM
@ PF = 1
STEP 3
RESET STATUS
REGISTER
STEP 4
FOR STEP 8
READ ALL xVARHR
AFTER LENERGY
INTERRUPT
READ ALL
xWATTHR
REGISTERS AFTER
LENERGY
INTERRUPT
STEP 5
CALCULATE
xWATTOS FOR ALL
PHASES
STEP 6
WRITE TO ALL
xWATTOS
REGISTERS
STEP 7
SET UP SYSTEM
FOR I TEST , V NOM @
PF = 0, INDUCTIVE
STEP 8
REPEAT STEP 3 TO
STEP 8 FOR
xVARHR, xVAROS
CALIBRATION
FOR STEP 8, CALCULATE
xVAROS FOR ALL PHASES
FOR STEP 8, WRITE TO
ALL xVAROS REGISTERS
END
Figure 84. Power Offset Calibration Using Line Accumulation
Rev. E | Page 52 of 72
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
ADE7761AARSZ-RL IC ENERGY METERING 1PHASE 20SSOP
ADE7761BARSZ-RL IC ENERGY METERING 1PHASE 20SSOP
ADE7768ARZ-RL IC ENERGY METERING 1PHASE 16SOIC
ADE7769ARZ-RL IC ENERGY METERING 1PHASE 16SOIC
ADM8843ACPZ-REEL7 IC LED DRVR WHITE BCKLGT 16LFCSP
ADP1653ACPZ-R7 IC LED DRVR PHOTO FLASH 16-LFCSP
ADP1712-EVALZ BOARD EVALUATION ADP1712
ADP1720-EVALZ BOARD EVAL FOR ADP1720-ADJ
相关代理商/技术参数
ADE7759 制造商:AD 制造商全称:Analog Devices 功能描述:Active Energy Metering IC with di/dt Sensor Interface
ADE7759ARS 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:*
ADE7759ARSRL 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:*
ADE7759ARSZ 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:*
ADE7759ARSZRL 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:*
ADE7760 制造商:AD 制造商全称:Analog Devices 功能描述:Energy Metering IC with On-Chip Fault Detection
ADE7760ARS 制造商:Analog Devices 功能描述:Energy Measurement 20-Pin SSOP 制造商:Analog Devices 功能描述:ENERGY METER IC W/ ONCHIP FAULT & OSCIL. - Rail/Tube
ADE7760ARSRL 制造商:Analog Devices 功能描述:Energy Measurement 20-Pin SSOP T/R 制造商:Analog Devices 功能描述:ENERGY METER IC W/ONCHIP FAULT & OSCIL. - Tape and Reel