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参数资料
| 型号： | CRD5463PM |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 15/46页 |
| 文件大小： | 0K |
| 描述： | REFERENCE DESIGN FOR POWER METER |
| 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： | CS5463 |
| 主要属性： | 单相功率表 |
| 次要属性： | 90 ~ 260 VAC |
| 已供物品： | 模块，适配器，线缆，电源线 |
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CS5463
V ACoff *
?
?
?
?
V*
I*
X
X
N
N
÷ N
÷ N
?
?
+
+
I ACoff *
+
+
X
V RMS *
I RMS *
X
Inverse
S*
X
+
PF*
?
-
?
Q TRIG *
Poff *
PulseRate *
X
Energy-to-pulse
E1
E2
E3
?
?
P*
Q*
+
+
?
N
N
÷ N
÷ N
P ACTIVE *
Q AVG *
X
*DENOTES REGISTER NAME.
Figure 4. Power Calculation Flow.
Q Avg = -------------------------
P Active
provides a pulse output that is proportional to the reac-
tive power or apparent power. Output E3 can also be set
to display the sign of the voltage applied to the voltage
channel or the PFMON comparator output.
The apparent power (S) is the combination of the active
power and reactive power, without reference to an im-
pedance phase angle, and is calculated by the CS5463
using the following formula:
S = V RMS ? I RMS
Power Factor (PF) is the active power (P Active ) divided
by the apparent power (S)
PF = ------------------
S
The sign of the power factor is determined by the active
power.
The CS5463 calculates the reactive power, Q Trig utiliz-
ing trigonometric identities, giving the formula
quadrature power (Q). The product is then averaged
over N conversions, utilizing the formula
N
? Q n
n = 1
N
Fundamental active (P F ) and reactive (Q F ) power is cal-
culated by performing a discrete Fourier transform
(DFT) at the relevant frequency on the instantaneous
voltage (V) and current (I). Epsilon is used to set the fre-
quency of the internal sine (imaginary component) and
cosine (real component) waveform generator. The har-
monic active power (P H ) is calculated by subtracting the
fundamental active power (P F ) from the active power
(P Active ).
The peak current (I peak ) and peak voltage (V peak ) are
the instantaneous current and voltage, respectively,
with the greatest magnitude detected during the last
computation cycle. Active, apparent, reactive, and fun-
damental power are updated every computation cycle.
4.4 Linearity Performance
The linearity of the V RMS , I RMS , active, reactive, and
power-factor power measurements (before calibration)
S 2 – P Active
Q Trig =
2
will be within ±0.1% of reading over the ranges speci-
fied, with respect to the input voltage levels required to
cause full-scale readings in the I RMS and V RMS regis-
cies, and utilizes epsilon ( ? ) to achieve unity gain at the
Average reactive power, Q Avg , is generated by averag-
ing the voltage multiplied by the current with a 90° phase
shift difference between them. The 90° phase shift is re-
alized by applying an IIR digital filter in the voltage chan-
nel to obtain quadrature voltage (see Figure 3). This
filter will give exactly -90° phase shift across all frequen-
line frequency.
The instantaneous quadrature voltage (V Q ) and current
(I) samples are multiplied to obtain the instantaneous
DS678F3
ters. Refer to Accuracy Specifications on page 7.
Until the CS5463 is calibrated, the accuracy of the
CS5463 (with respect to a reference line-voltage and
line-current level on the power mains) is not guaranteed
to within ±0.1%. (See Section 7. System Calibration on
page 37.) The accuracy of the internal calculations can
often be improved by selecting a value for the Cycle
Count Register that will cause the time duration of one
computation cycle to be equal to (or very close to) a
whole number of power-line cycles (and N must be
greater than or equal to 4000).
15
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相关代理商/技术参数 |
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| CRD5463PM-Z | 功能描述:REFERENCE DESIGN FOR POWER METER RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PSoC® 主要目的:电源管理，热管理 嵌入式:- 已用 IC / 零件:- 主要属性:- 次要属性:- 已供物品:板，CD，电源 |
| CRD5490-Z | 功能描述:电源管理IC开发工具 CS5463 Pwr Meas/Mntr Reference Design RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| CRD5AS-12B | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:Reverse Conducting Thyristor Medium Power Use |
| CRD5AS-12B#B00 | 功能描述:SCR 600V 7.8A Sensitive Gate Surface Mount MP-3A 制造商:renesas electronics america 系列:- 包装:管件 零件状态:有效 电压 - 断态:600V 电压 - 栅极触发（Vgt）（最大值）:800mV 电流 - 栅极触发（Igt）（最大值）:100μA 电压 - 通态（Vtm）（最大值）:1.8V 电流 - 通态（It（AV））（最大值）:5A 电流 - 通态（It（RMS））（最大值）:7.8A 电流 - 保持（Ih）（最大值）:3mA 电流 - 断态（最大值）:2mA 电流 - 不重复浪涌 50，60Hz（Itsm）:90A @ 60Hz SCR 类型:灵敏栅极 工作温度:-40°C ~ 150°C 安装类型:表面贴装 封装/外壳:TO-252-3，DPak（2 引线+接片），SC-63 供应商器件封装:MP-3A 标准包装:1 |
| CRD5AS-12BB00 | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:Reverse Conducting Thyristor Medium Power Use |
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