Design Win

Dual-phase energy metering evaluation board with 2 current transformers based on the STPM34

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Product overview


The EVALSTPM34 evaluation board is a class 0.2, dual-phase meter with 2 CTs for power line systems with Vnom = 140 to 300 V(RMS), Inom / Imax = 5/100 A(RMS), flin = 50/60 Hz ± 10% and Tamb = -40 to +85 °C.

Measured active/reactive power can be output from two programmable LEDs on the board.

The board can be interfaced with a PC running evaluation software through an isolated USB-to-UART port, or through the STEVAL-IPE023V1 USB (SPI) isolated interface tool for configuration and data reading.

The board also has SPI/UART pins available to interface a microcontroller for application development.

  • All features

    • 0.2% accuracy dual or split-phase meter
    • Vnom(RMS) = 140 to 300 V, Inom/Imax(RMS) = 5/100 A, flin = 50/60 Hz ± 10%
    • Connector for USB isolated hardware programmer tool STEVAL-IPE023V1 and PC GUI
    • USB-to-UART isolated connector to PC GUI using virtual COM port
    • SPI/UART switch for device peripheral selection
    • 2 programmable LEDs on board
    • Digital expansion to external system-on-chip or MCU
    • 3.3 V power supply: external or through STEVAL-IPE023V1 isolated USB board
    • IEC61000 standard compliant
    • RoHS compliant

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