- 您现在的位置：买卖IC网 > PDF目录97839 > 71M6513-IGTR/F (MAXIM INTEGRATED PRODUCTS INC) SPECIALTY ANALOG CIRCUIT, PQFP100 PDF资料下载
参数资料
| 型号： | 71M6513-IGTR/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 封装： | LEAD FREE, LQFP-100 |
| 文件页数： | 49/104页 |
| 文件大小： | 1390K |
| 代理商： | 71M6513-IGTR/F |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页当前第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页
71M6513/71M6513H
3-Phase Energy Meter IC
DATA SHEET
SEPTEMBER 2011
2005-2011 Teridian Semiconductor Corporation
Page: 49 of 104
A Maxim Integrated Products Brand
FUNCTIONAL DESCRIPTION
Theory of Operation
The energy delivered by a power source into a load can be expressed as:
∫
=
t
dt
t
I
t
V
E
0
)
(
)
(
Assuming phase angles are constant, the following formulae apply:
P = Real Energy [Wh] = V * A * cos φ* t
Q = Reactive Energy [VARh] = V * A * sin φ * t
S = Apparent Energy [VAh] =
2
Q
P
+
For a practical meter, not only voltage and current amplitudes, but also phase angles and harmonic content may change
constantly. Thus, simple RMS measurements are inherently inaccurate. A modern solid-state electricity meter IC such as the
71M6513/6513H functions by emulating the integral operation above, i.e. it processes current and voltage samples through an
ADC at a constant frequency. As long as the ADC resolution is high enough and the sample frequency is beyond the harmonic
range of interest, the current and voltage samples, multiplied with the time period of sampling will yield an accurate quantity for
the momentary energy. Summing up the momentary energy quantities over time will result in accumulated energy.
Figure 12: Voltage. Current, Momentary and Accumulated Energy
Figure 12 shows the shapes of V(t), I(t), the momentary energy and the total accumulated energy, resulting from 50 samples
of the voltage and current signals over a period of 20ms. The application of 240VAC and 100A results in an accumulation of
480Ws over the 20ms period, as indicated by the curve for Accumulated Energy.
The described sampling method works reliably, even in the presence of dynamic phase shift and harmonic distortion.
-500
-400
-300
-200
-100
0
100
200
300
400
500
0
5
10
15
20
time [ms]
V
[V],
I
[A
],
P
[W
s
]
Current [A]
Voltage [V]
Energy per Interval [Ws]
Accumulated Energy [Ws]
相关PDF资料 |
PDF描述 |
|---|---|
| 71M6513H-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 71M6513H-IGTR/F | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 71M6513-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 71M6515H-IGTW/F | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 71M6515H-IGTWR/F | SPECIALTY ANALOG CIRCUIT, PQFP64 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6515H | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Energy Meter IC |
| 71M6515H_11 | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Up to 10ppmC precision ultra-stable voltage reference Digital temperature compensation |
| 71M6515H-DB | 功能描述:开发板和工具包 - 8051 71M6515H Demo Brd RoHS:否 制造商:Silicon Labs 产品:Development Kits 工具用于评估:C8051F960, Si7005 核心: 接口类型:USB 工作电源电压: |
| 71M6515H-IGT | 制造商:Maxim Integrated Products 功能描述:METERING FRONT END - Rail/Tube |
| 71M6515H-IGT/F | 功能描述:计量片上系统 - SoC Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。