EVALSTPM3X-3PH:Poly-phase energy metering demonstration board with current transformers based on the STPM33, STPM34 and STM8S903

The STPM33, STPM34 poly-phase evaluation board is a Class 0.2, single-phase or poly-phase meter with current transformer sensors for power line systems of Vnom= 140 to 300 VRMS, Inom/ Imax = 5/100 ARMS, flin = 50/60 Hz ± 10% and Tamb= -40 to +85 °C.

Measured data from the STPM33 and STPM34 are read by the STM8S903 device for 3-phase energy and power calculations and the active/reactive cumulative LED signals generation.

To display all measurements, the board can be interfaced with PC running evaluation software through an isolated USB port, which provides also the 3.3 V power supply.

The board has also SPI/UART pins available to be interfaced to an external microcontroller for further application development.

Key Features

  • 0.2% accuracy poly-phase meter evaluation board
  • Vnom(RMS) = 140 to 300 V, Inom / Imax(RMS) = 5/100 A, flin = 50/60 Hz ± 10%
  • USB isolated connector to PC GUI
  • Power supply 3.3 V through USB connector
  • SPI/UART connector for STPM33/34 direct access
  • SWIM connector for firmware upgrade
  • SPI/UART connector for expansion to external MCU
  • 2x LEDs on board for active-reactive power
  • IEC61000 standard compliant
  • RoHS compliant
Product Specifications
DescriptionVersionSize
DB2450: Poly-phase energy metering evaluation board with current transformers based on the STPM33, STPM34 and STM8S9031.0228 KB
User Manuals
DescriptionVersionSize
UM1948: EVALSTPM3X-3PH evaluation board firmware1.0573 KB
UM1944: EVALSTPM3x-3PH evaluation board and graphical user interface (GUI)1.0894 KB
Board Manufacturing Specifications
DescriptionVersionSize
EVALSTPM3X-3PH gerber files178 KB
Bill of Materials
DescriptionVersionSize
EVALSTPM3X-3PH121 KB
Schematic Packs
DescriptionVersionSize
EVALSTPM3X-3PH schematic170 KB
Flyers
DescriptionVersionSize
STPM32, STPM33, STPM34 - Taking care of every milliwatt10.20161 MB
License Agreement
DescriptionVersionSize
Evaluation products license agreement1.0125 KB
Sample & Buy
Part NumberCore ProductUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
EVALSTPM3X-3PHSTPM33, STPM34--NECEAR99-
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
EVALSTPM3X-3PHCARDIndustrialEcopack1
Poly-phase energy metering evaluation board with current transformers based on the STPM33, STPM34 and STM8S903 EVALSTPM3X-3PH
EVALSTPM3X-3PH evaluation board firmware EVALSTPM3X-3PH
EVALSTPM3x-3PH evaluation board and graphical user interface (GUI) EVALSTPM3X-3PH
EVALSTPM3x-3PH evaluation board and graphical user interface (GUI) EVALSTPM3X-3PH
EVALSTPM3x-3PH evaluation board and graphical user interface (GUI) EVALSTPM3X-3PH
EVALSTPM3x-3PH evaluation board and graphical user interface (GUI) EVALSTPM3X-3PH
The STPM3x evaluation software EVALSTPM33
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 ST-LINK-V2