SY7T612+U3

The SY7T612 is an energy measurement processor (EMP), in a 32QFN package, designed specifically for BOM optimized applications such as smart-plugs, smart appliances, lighting and home/building automation.

The analog front end (AFE) provides configurable analog inputs for interfacing to current sensors and voltage sensors respectively. Scaled voltages from the sensors are fed to a high-resolution deltasigma converter. A low power 24-bit energy measurement processor (EMP) with embedded firmware performs all the necessary computation, compensation, and data formatting for interfacing to any host controller. With integrated flash memory for storing nonvolatile data such as calibration coefficients and input configuration settings, the device provides an autonomous solution that simplifies system integration.

• Voltage Monitoring:
  • RMS and Average (DC) Voltage
  • Line Frequency and Zero-Crossing
  • Sag and Surge Detection
  • Flexible Min and Max Tracking
  • Fundamental and Harmonics Calculations
• Current Monitoring:
  • RMS and Average (DC) Current
  • Zero-Crossing
  • Flexible Min and Max Tracking
  • Fundamental and Harmonics Calculations
  • Shunt or CT (On-Chip Phase Compensation)
  • Power and Energy:
• Active, Reactive and Apparent Power
  • Power Factor
  • Net Active, Reactive Energy
  • Configurable Energy Pulse Output
• Communication Interfaces:
  • UART, SPI
• Auxiliary Functions:
  • Control of up to three relays, support of non-latching and latching types
  • On-Chip Calibration Routines and Coefficient Storage
  • Flexible Alarm Generation and Signaling
  • UART Auto-Reporting Mode