Programmable poly-phase energy calculator IC

The STPMC1 device functions as an energy calculator and is an ASSP designed for effective energy measurement in power line systems utilizing Rogowski, current transformer, Shunt or Hall current sensors. Used in combination with one or more STPMSx ICs, it implements all the functions needed in a 1-, 2- or 3-phase energy meter. It can be coupled with a microprocessor for multi-function energy meters, or it can directly drive a stepper motor for a simple active energy meter. The calculator has five input data pins. The first three receive the voltage and current information of the phases. In fact, each data input processes two ΔΣ signals, multiplexed in time and generated by the STPMSx device. The fourth input receives multiplexed ΔΣ signals also, and can be used to sense the neutral current or another signal - temperature, for example. The fifth input data pin accepts non-multiplexed ΔΣ signals and it can be used for sensing the magnetic field information from a Hall sensor. Four internal hard-wired DSP (digital signal processing) units perform all the computations on the ΔΣ streams in real time by means of ΔΣ arithmetic blocks. This allows the achievement of very high computation precision with fast and efficient digital architecture. All the data recorded by the STPMC1 are accessible through an SPI port, which is also used to configure and calibrate the device. The configuration and calibration data can be saved in a 112-bit OTP block, or dynamically set in microprocessor-based meters.

Key Features

  • Supports 1-, 2- or 3-phase WYE and Delta services, from 2 to 4 wires
  • Computes cumulative active and reactive wide-band and fundamental harmonic energies
  • Computes active and reactive energies, RMS and momentary voltage and current values for each phase
  • Supports Rogowski coil, current transformer, Shunt or Hall current sensors
  • Exclusive ripple-free energy calculation algorithm
  • Programmable pulsed output
  • Stepper motor outputs
  • Neutral current, temperature, and magnetic field monitoring
  • OTP memory for configuration and calibration
  • SPI interface
  • Supports IEC 62052-11 / 62053-21 / 62053-23 standards
  • Less than 0.1 % error over 1:1000 dynamic range


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UM1488 UM1488: STPMC1 evaluation software 2.0 2 MB

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サンプル & 購入

製品型番 パッケージ Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Autoshutdown Marketing Status Unit Price (US$) * 数量 ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STPMC1BTR TSSOP 20 Tape And Reel -40 85 - Active 1.5 1000 NEC EAR99 MALAYSIA MORE INFO サンプル入手 買い物かごに追加 DISTRIBUTOR AVAILABILITY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

品質 & 信頼性

製品型番 Marketing Status パッケージ Grade RoHS Compliance Grade Material Declaration**
STPMC1BTR アクティブTSSOP 20IndustrialEcopack2 (**) 0

(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.