ACS71020 Hall-effect Power Sensing and Overcurrent Detection Breakout -7Semi
The ACS71020 Hall-effect Power Sensing and Overcurrent Detection Breakout by 7Semi offers a precision, isolated power monitoring solution designed for demanding industrial and high-power environments.
Featuring integrated 16-bit ADCs, it delivers highly accurate real-time voltage and current measurements with a current sensing range of up to 90A. The module ensures safe operation through reinforced electrical isolation rated at 517 VRMS, eliminating the need for extra isolation components.
With flexible communication options via I2C and SPI, it easily integrates with embedded and microcontroller systems. Enhanced with temperature compensation, offset correction, and voltage monitoring capabilities, the breakout supports comprehensive power analysis by providing key metrics such as active, reactive, and apparent power, along with RMS and instantaneous measurements, making it ideal for precise power system management and overcurrent fault detection.
Features:
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Wide Current Sensing Range: Measures currents from 0 to 90A and is ideal for both low and high-power systems.
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Dual Communication Interface: A seamless connection via I2C or SPI allows for maximum design flexibility.
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High-precision 16-bit ADCs: Provide accurate voltage and current measurements for trustworthy power data.
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Advanced Power Analysis: Determines active, reactive, and perceived power, as well as power factor.
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Electrical Isolation: Reinforced up to 517 VRMS, removing the need for two isolated supplies.
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Fault Detection Features: Include overcurrent fault output pins and customizable voltage threshold notifications.
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Temperature Resilience: Can operate in a wide temperature range, making it suited for severe industrial environments.
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Zero Crossing Detection: The dedicated pin for voltage zero crossing improves phase control applications.
- Hall-Effect Sensing: Provides common-mode stray field rejection for enhanced signal integrity.
Data Transmission
Data transfer over I2C consists of numerous phases, as indicated in the sequence below.
- Start Condition: Defined by a negative edge on the SDA line, initiated by the Master while the SCL is high.
- Address Cycle: A 7-bit slave address plus one bit to indicate write (0) or read (1), followed by an acknowledge bit.
- Data Cycles: Reading or writing eight bits of data, followed by an acknowledgement bit. This cycle can be repeated to transport numerous bytes of data. The register address could be the first data byte received during a write.
- Stop Condition: A positive edge on the SDA line with SCL high.
