參數(shù)資料
型號(hào)： 90E36ERGI
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP48
封裝： TQFP-48
文件頁(yè)數(shù)： 5/75頁(yè)
文件大?。?/td> 904K
代理商： 90E36ERGI
90E36
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Function Description
13
August 24, 2011
3.4
METERING FUNCTION
The accumulated energy is converted to pulse frequency on the CF
pins and stored in the corresponding energy registers. The 90E36 pro-
vides energy accumulation registers with 0.1 or 0.01 CF resolution.
0.01CF / 0.1CF setting is defined by the 001LSB bit (b9, MMode0).
3.4.1
THEORY OF ENERGY REGISTERS
The energy accumulation runs at 1 MHz clock rate, by accumulating
the power value calculated by the DSP processor.
The power accumulation process is equivalent to digitally integrating
the instantaneous power with a delta-time of about 1us. The accumu-
lated energy is used to calculate the CF pulses and the corresponding
internal energy registers.
The accumulated energy is converted to frequency of the CF pulses.
One CF usually corresponds to 1KWh / MC (MC is Meter Constant, e.g.
3200 imp/kWh), and is usually referenced as an energy unit in this data-
sheet. The internal energy resolution for accumulation and conversion is
0.01 CF.
The 0.01 CF pulse energy constant is referenced as 'PL_constant'.
Within 0.01 CF, forward and reverse energy are counteracted. When
energy exceeds 0.01 pulse, the respective forward/ reserve energy is
increased.
Take the example of active energy, suppose:
T0: Forward energy register is 12.34 pulses and reverse energy reg-
ister is 1.23 pulses.
From t0 to t1: 0.005 forward pulses appeared.
From t1 to t2: 0.004 reverse pulses appeared.
From t2 to t3: 0.005 reverse pulses appeared.
From t3 to t4: 0.007 reverse pulses appeared.
The following table illustrates the process of energy accumulation
process:
When forward/reverse energy reaches 0.1/0.01 pulse, the respective
register is updated. When forward or reverse energy reaches 1 pulse,
CFx pins output pulse and the REVP/REVQ bits (b7~0, SysStatus1) are
updated. Refer to Figure-3.
t0
t1
t2
t3
t4
Input energy
+ 0.005
-0.004
-0.005
-0.007
Bidirectional energy accumulator
0.005
0.001
-0.004
-0.001
Forward 0.01 CF
00
0
Reverse 0.01CF
00
0
1
Forward energy register
12.34
Reserve energy register
1.23
1.24
相關(guān)PDF資料
PDF描述
90MMCX-S50-0-51/111 MMCX CONNECTOR, JACK
91-21SUBC/S400-A6/TR10 T-3/4 SINGLE COLOR LED, BLUE, 1.9 mm
91-21SURC/S530-A3/TR7 T-3/4 SINGLE COLOR LED, BRILLIANT RED, 1.9 mm
91-21SURC/S530-A3/TR9 T-3/4 SINGLE COLOR LED, BRILLIANT RED, 1.9 mm
91-21USRC/S530-A4/F7 T-3/4 SINGLE COLOR LED, DARK RED, 1.9 mm
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
90E36ERGI8 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel
90E3-SERIES 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic
90E46EMGI 功能描述:計(jì)量片上系統(tǒng) - SoC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時(shí)鐘頻率:70 Hz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數(shù)量:12 片上 ADC: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel
90E46EMGI8 制造商:Integrated Device Technology Inc 功能描述:Energy Metering SoC 100-Pin TQFP 制造商:Integrated Device Technology Inc 功能描述:100-PIN TQFP - Tape and Reel
90E9A 制造商:NDK 制造商全稱:NDK 功能描述:crystal filter that supports surface mounting.
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*