Circuito de medición de potencia

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SSP1842

SSP1842 is a built-in clock calibration-free energy metering IC, which is suitable for single-phase multi-function electricity meters, smart sockets, smart home appliances and other applications, with more cost-efficient solution.SSP1842 integrates 2 high-precision Sigma-Delta ADC to measure current and voltage simultaneously. Reference voltage, power management and other analog circuit modules, and processing active power, current and voltage RMS electrical parameters digital signal processing circuit.SSP1842 can measure electric parameters such as current and voltage RMS, active power, active energy, fast current RMS (for over-current protection), and waveform output and so on. SSP1842 output data through the UART/SPI interface. It is available for the smart socket, smart appliances, single-phase multi-function power meter and information requirement of data acquisition in electricity applications.SSP1842 has a patented anti-creep design, which can be combined with reasonable external hardware design to ensure that the noise energy cannot be calculated in the energy pulse when there is no load.

SSP1840

SSP1840 is a built-in clock and calibration-free energy metering IC, suitable for single-phase multifunctional electricity meter, smart socket, smart home appliances, electric bicycle charging pile and other applications with better cost performance.SSP1840 integrates 2 high-precision sigma-delta ADC to measure current and voltage simultaneously. Reference voltage, power management and other analog circuit modules, and processing active power, current and voltage RMS electrical parameters digital signal processing circuit.SSP1840 can measure electric parameters such as current and voltage RMS, active power, active energy, fast current RMS (for leakage detection/over-current protection), and temperature detection, waveform output and so on. SSP1840 output data through the UART/SPI interface. It is available for the smart socket, smart appliances, single-phase multi-function power meter, electric bicycle charging pile and information requirement of data acquisition in electricity applications.SSP1840 has a patented anti-creep design, which can be combined with reasonable external hardware design to ensure that the noise energy cannot be calculated in the energy pulse when there is no load.

SSP1839

SSP1839 is a built-in clock and calibration-free energy metering IC, suitable for single-phase multifunctional electricity meter, smart socket, smart home appliances, electric bicycle charging pile and other applications with better cost performance.SSP1839 integrates 3 high-precision sigma-delta ADC, it can measure two channel of current and one channel of voltage simultaneously.SSP1839 can measure electric parameters such as current and voltage RMS, active power, active energy, fast current RMS (for leakage detection/over-current protection), and temperature detection, waveform output and so on. SSP1839 output data through the UART/SPI interface. It is available for the smart socket, smart appliances, single-phase multi-function power meter, electric bicycle charging pile and information requirement of data acquisition in electricity applications.SSP1839 has a patented anti-creep design, which can be combined with reasonable external hardware design to ensure that the noise energy cannot be calculated in the energy pulse when there is no load.

SSP1851

The SSP1851 is a high-accuracy, fault-tolerant electrical energy measurement IC that is intended for use with 2-wire distribution systems. The part specifications surpass the accuracy requirements as quoted in the IEC1036 standard.The only analog circuitry used in the SSP1851 is in the ADCs and reference circuit. All other signal processing (e.g., multiplication and filtering) is carried out in the digital domain. This approach provides superior stability and accuracy over extremes in environmental conditions and over time.The SSP1851 incorporates a novel fault detection scheme that warns of fault conditions and allows the SSP1851 to continue accurate billing during a fault event. The SSP1851 does this by continuously monitoring both the phase and neutral (return) currents. A fault is indicated when these currents differ by more than 12.5%. Billing is continued using the larger of the two currents.The SSP1851 supplies average real power information on the low-frequency outputs F1 and F2. These logic outputs may be used to directly drive an electromechanical counter or interface toan MCU. The CF logic output gives instantaneous real power information. This output is intended to be used for calibration purposes.The SSP1851 includes a power supply monitoring circuit on the AVDD supply pin. The SSP1851 will remain in a reset condition until the supply voltage on AVDD reaches 4 V. If the supply falls below 4 V, the SSP1851 will also be reset and no pulses will be issued on F1, F2, and CF. Internal phase matching circuitry ensures that the voltage and current channels are matched whether the HPF in Channel 1 is on or off. The SSP1851 also has anticreep protection.The SSP1851 is available in 24-lead SSOP packages.

SSP1880

El SSP1880 es un circuito integrado de medición de potencia trifásica de alta precisión con especificaciones técnicas que cumplen los requisitos de precisión especificados en IEC62053.El SSP1880 utiliza circuitos analógicos únicamente para el ADC y la fuente de referencia, y circuitos digitales para el resto del procesamiento de señales (como la multiplicación y el filtrado), lo que permite al SSP1880 mantener una precisión extremadamente alta y una estabilidad a largo plazo en condiciones ambientales adversas.Los pines F1 y F2 del SSP1880 emiten el valor medio de la potencia activa a una frecuencia más baja y pueden utilizarse para controlar directamente contadores electromecánicos o para interactuar con microcontroladores (MCU). El pin CF da salida a un valor instantáneo de potencia activa a una frecuencia más alta para calibración o interconexión con una MCU.El SSP1880 contiene un circuito de monitorización interno para la patilla de alimentación VDD. El SSP1880 permanece en reset hasta que VDD sube a 4V. Cuando VDD cae por debajo de 4V, el SSP1880 también se reinicia, momento en el cual no hay salidas de F1, F2 o CF.El circuito interno de adaptación de fase permite que los canales de tensión y corriente estén siempre adaptados en fase, y las características internas de umbral en vacío garantizan que el SSP1880 no tenga latencia en vacío.El SSP1880 está disponible en un encapsulado SOP de 16 patillas.