MCP39F511A-E/MQ

Overview

The MCP39F511A-E/MQ is a single-phase power monitoring IC designed for high-precision energy measurement. It features two 24-bit delta-sigma ADCs with a signal-to-noise ratio of 94.5 dB and a 16-bit calculation engine. The device supports dual-mode operation, automatically detecting and switching between AC and DC power sources within a range up to 4000:1. Key electrical parameters include a supply voltage range of 2.7 V to 3.6 V, operating current of 13 mA, and accuracy of 0.1%. It operates within a temperature range of -40°C to +125°C and is housed in a QFN-28 package.

Feature Summary

• Dual-mode power monitoring capability that automatically detects and switches between AC and DC sources to optimize measurement results.
• Integrated 24-bit delta-sigma ADCs and 16-bit calculation engine providing industry-leading accuracy for simultaneous AC/DC power measurement.
• On-chip EEPROM functionality that automatically saves and restores power data during power loss or power-up events to prevent data loss.
• Comprehensive standard power calculations including active/reactive power, RMS values, line frequency, and power factor.

Applications

• Solar inverters
• Smart lighting systems
• Cloud servers

Procurement Notes

Verify the specific suffix 'E/MQ' against the manufacturer's official datasheet to confirm the exact package type (QFN-28) and temperature grade. Ensure compatibility with AEC-Q100 qualification requirements if automotive applications are intended. Cross-reference the part number with authorized distributors to confirm availability of the reel packaging format specified in product attributes.

Selection Notes

Select this component when high precision is required for both AC and DC power monitoring in a single integrated circuit. The device simplifies calibration and reduces firmware development time through built-in power calculations. Consider the 0.1% accuracy and wide dynamic range for applications demanding detailed energy accumulation and event monitoring capabilities.

Part Context

The MCP39F511A belongs to Microchip's GreenChip power monitoring family, aimed at reducing system costs and development complexity. It integrates low-drift voltage references and internal oscillators to minimize external component count. This series supports advanced diagnostics through event logging, facilitating predictive maintenance and improved power management in modern electronic systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and register compatibility before considering alternative devices from other manufacturers.

FAQ

How does the MCP39F511A handle power source transitions?

The device automatically detects the power source type and switches between AC and DC modes to optimize measurement accuracy across a wide dynamic range.

What protection is provided for power measurement data?

The integrated EEPROM automatically saves power data upon power loss and restores it upon power-up, ensuring measurement results are never lost during unexpected power interruptions.