EVALSTPM34: Class 0.2, Dual-Phase Power Meter with Two Current Transformers


The STPM34 evaluation board is a class 0.2, dual-phase meter with 2 CTs for power line systems with Vnom= 140 to 300 (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 RS232 port, or through the STEVAL-IPE023V1 USB isolated interface tool for configuration and data reading. The board also has SPI/UART pins available to interface a microcontroller for application development.

  • 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

  • RS232 and UART isolated connectors to PC GUI

  • 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


Manufacturer STMicroelectronics
Category Power Management
Sub-Category Energy Metering for AC
Eval Board Part Number 497-14705-ND
Eval Board Supplier STMicroelectronics
Eval Board Normally In Stock
Sensing Method Current Transformer
Features Active Energy Measurement
Active Power Measurement
Apparent Power Measurement
GUI / Design Software
Reactive Energy Measurement
Reactive Power Measurement
RMS Current Measurement
RMS Voltage Measurement
RS-232 Interface
Shutdown, Enable, Standby
SPI Interface
UART Interface
USB Interface
AC Voltage 140 ~ 300 VAC
Max AC Current 100 A (5A Nom)
Component Count + Extras 77 + 11
Design Author STMicroelectronics
Main I.C. Base Part STPM34

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