Description
7Semi ACS71020: Hall-Effect Power Monitoring and Overcurrent Detection Breakout
- Extensive Current Sensing: Measures current from 0 to 90 Amps, ideal for high-power applications.
- Flexible Communication: Integrates seamlessly with microcontrollers or other devices via I2C or SPI interfaces.
- High-Precision Monitoring: 16-bit voltage and current ADCs ensure accurate and reliable measurements.
- Advanced Functionality: Includes temperature compensation, offset correction, and overcurrent detection for comprehensive power analysis.
- Wide Operating Range: Designed to function effectively in harsh environments with its wide temperature tolerance.
- Isolated Design: Reinforced isolation eliminates the need for separate isolated supplies, simplifying system design.
- Detailed Power Analysis: Measures active, reactive, and apparent power, along with power factor.
- Real-time Monitoring: Provides RMS and instantaneous voltage and current measurements.
- Dedicated Zero Crossing: Dedicated voltage zero crossing pin streamlines power calculations.
- Overcurrent Protection: Overcurrent fault output pin safeguards against potential damage.
- Hall-Effect Measurement: Hall-effect technology offers common mode stray field rejection for enhanced accuracy.
- Programmable Under/Overvoltage Alert: User-programmable VRMS under/overvoltage pin enables customized fault detection.
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Current-sensing range from 0 to 90 A
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I2C or SPI communication
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16-bit voltage and current ADCs
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Accurate power monitoring of AC applications
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Reinforced isolation up to 517 VRMS in a single package eliminates the need for dual isolated supplies
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Active, reactive, and apparent power measurements, and power factor
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RMS and instantaneous voltage and current measurements
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Dedicated voltage zero crossing pin
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Overcurrent fault output pin
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Hall-effect-based current measurement with common mode stray field rejection
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User-programmable VRMS under/overvoltage pin
The transmission of data over I2C is composed of several steps outlined in the sequence below.
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Start Condition: Defined by a negative edge of the SDA line, initiated by the Master while SCL is high.
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Address Cycle: 7-bit Slave address, plus 1 bit to indicate write (0) or read (1), followed by an Acknowledge bit.
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Data Cycles: Reading or writing 8 bits of data, followed by an Acknowledge bit. This cycle can be repeated for multiple bytes of data transfer. The first data byte on a write could be the register address.
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Stop Condition: Defined by a positive edge on the SDA line while SCL is high.
- ACS71020 Datasheet
- ACS71020 Power Monitoring Application Notes with Arduino Source Code
- ACS71020 I2C Addressing Using Application Notes
- ACS71020 Power Monitoring Breakout 3D STEP File
ACS71020 Power Monitoring Breakout Dimensions
The Hall-effect Power Monitoring and Overcurrent Detection Breakout is a device that uses the Hall-effect principle to measure current flowing through a conductor. The Hall-effect sensor generates a voltage proportional to the magnetic field created by the current, and this voltage is amplified and converted to a digital signal by the onboard electronics. This breakout board can measure currents up to 30A with a resolution of 66mV/A, making it useful for monitoring power consumption in various applications. Additionally, the device includes an overcurrent detection circuit that can be configured to trigger an interrupt or shutdown the system when the current exceeds a user-defined threshold, providing a safety feature to prevent damage to the circuitry. The Hall-effect Power Monitoring and Overcurrent Detection Breakout is a versatile and valuable tool for monitoring and protecting electrical systems.
