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| 型号： | CDB5464U |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 16/46页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR CS5464 ADC |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电度表/功率表 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | CS5464 |
| 主要属性： | 电能表 |
| 次要属性： | 图形用户接口，SPI? 和 USB 接口 |
| 已供物品： | 板，线缆，软件 |
| 产品目录页面： | 754 (CN2011-ZH PDF) |
| 相关产品： | CS5464-ISZR-ND - IC ENERGY METERING 1PHASE 28SSOP 598-1194-5-ND - IC ENERGY METERING 1PHASE 28SSOP 598-1193-5-ND - IC PWR/ENERGY METER 3CH 28-SSOP |
| 其它名称： | 598-1554 CDB-5464U |
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CS5464
V1 ACOFF
(V2 ACOFF )
P1 OFF (P2 OFF )
I1 ACOFF
(I2 ACOFF )
Figure 5. Low-rate Calculations
P ACTIVE
4.8 Power and Energy Results
The instantaneous voltage and current samples are
multiplied to obtain the instantaneous power ( P1 , P2 )
(see Figure 3 and 4 ). The product is then averaged over
N conversions to compute active power ( P1 AVG ,
P2 AVG ).
Apparent power ( S1 , S2 ) is the product of RMS voltage
and current as shown:
S = V RMS ? I RMS
Power factor ( PF1 , PF2 ) is active power divided by ap-
parent power as shown below. The sign of the power
factor is determined by the active power.
PF = ----------------------
S
Wideband reactive power ( Q1 WB , Q2 WB ) is calculated
by doing a vector subtraction of active power from ap-
parent power.
ed to line frequency, so their gain is corrected by the Ep-
silon register, which is based on line frequency.
Reactive power ( Q1 AVG , Q2 AVG ) is generated by inte-
grating the instantaneous quadrature power over N
samples.
4.9 Peak Voltage and Current
Peak current ( I1 PEAK , I2 PEAK ) and peak voltage
( V1 PEAK , V2 PEAK ) are the largest current and voltage
samples detected in the previous low-rate interval.
4.10 Power Offset
The power offset registers, P1 OFF ( P2 OFF ) can be used
to offset erroneous power sources resident in the sys-
tem not originating from the power line. Residual power
offsets are usually caused by crosstalk into current
paths from voltage paths or from ripple on the meter or
chip’s power supply, or from inductance from a nearby
transformer.
These offsets can be either positive or negative, indicat-
ing crosstalk coupling either in phase or out of phase
S 2 – P ACTIVE
Q WB =
2
with the applied voltage input. The power offset regis-
ters can compensate for either condition.
Quadrature power ( Q1 , Q2 ) are sample rate results ob-
tained by multiplying instantaneous current ( I1 , I2 ) by in-
stantaneous quadrature voltage ( V1Q , V2Q ) which are
created by phase shifting instantaneous voltage ( V1 ,
V2 ) 90 degrees using first-order integrators. (see Figure
3 and 4 ). The gain of these integrators is inversely relat-
16
To use this feature, measure the average power at no
load using either Single or Continuous Conversion com-
mands. Take the measured result (from the P1 AVG
( P2 AVG ) register), invert (negate) the value and write it
to the associated power offset register, P1 OFF ( P2 OFF ).
DS682F3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CDB5464U-Z | 制造商:Cirrus Logic 功能描述:EVAL BD PB-FREE DEMO BOARD FOR CS5464 - Boxed Product (Development Kits) 制造商:Cirrus Logic 功能描述:Eval Board |
| CDB5466U | 功能描述:数据转换 IC 开发工具 Eval Bd F/Residental Pow-Meter Apps RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| CDB5466U-Z | 制造商:Cirrus Logic 功能描述:PB-FREEEVAL BOARD FOR CS5466 WITH USB - Bulk |
| CDB5467U | 功能描述:数据转换 IC 开发工具 Eval Bd 4-Ch Sngl-Phs Pow/Energy RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| CDB5471 | 制造商:Cirrus Logic 功能描述:Tools Development kit Kit Con |
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