Linear Hall-Effect Current Sensor Use Case: Multi-Phase Inverters
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This use case examines the application of the MCS1806 linear Hall-effect current sensor in multi-phase inverters.
The MCS1806 linear Hall-effect current sensor provides integrated current sensors combined with built-in phase synchronization, resulting in improved accuracy and power quality for multi-phase inverters.
Multi-phase inverters are used in a variety of high-power applications, including renewable energy systems, electrical vehicles (EVs), and industrial drives, where DC power is converted to multi-phase AC power. Achieving accurate current sensing and precise phase control are two significant challenges in multi-phase inverter design. While shunt resistors and Hall-effect sensors are often implemented for current sensing, choosing between these techniques requires a difficult tradeoff between accuracy and power loss, in addition to managing overall susceptibility to interference and noise with both techniques.
The MCS1806 linear Hall-effect current sensor provides integrated current sensors combined with built-in phase synchronization, resulting in improved accuracy and power quality for multi-phase inverters. Accurate current sensing can be maintained even in high-noise environments due to the MCS1806’s differential Hall array, which cancels out any stray magnetic field. The small SOIC-8 footprint saves board area and makes it well-suited for space-constrained applications.
Additional features include:
- 3.3V or 5V Single-Supply Options
- Immune to External Magnetic Fields via Differential Sensing
- 3kVRMS Minimum Isolation Voltage
- 500VRMS Maximum Working Voltage
- ±2.5% Total Error
- 0.9mΩ Internal Conductor Resistance
- ±5A to ±50A Bidirectional Range
- Adjustable Bandwidth Up to 100kHz
- Ratiometric Output from Supply Voltage
- Output Proportional to the AC or DC Currents
- Factory-Trimmed for Accuracy
- No Magnetic Hysteresis
Learn more about MPS’s excellent selection of current sensors for AC or DC current sensing.
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