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STPM34

Three Phase Metering ICs
  • active 活性

The STPM3x is an ASSP family designed for high accuracy measurement of power and energies in power line systems using the Rogowski coil, current transformer or shunt current sensors. The STPM3x provides instantaneous voltage and current waveforms and calculates RMS values of voltage and currents, active, reactive and apparent power and energies. The STPM3x is a mixed signal IC family consisting of an analog and a digital section. The analog section consists of up to two programmable gain low-noise low-offset amplifiers and up to four 2ndorder 24-bit sigma-delta ADCs, two bandgap voltage references with independent temperature compensation, a low drop voltage regulator and DC buffers. The digital section consists of digital filtering stage, a hardwired DSP, DFE to the input and a serial communication interface (UART or SPI). The STPM3x is fully configurable and allows a fast digital system calibration in a single point over the entire current dynamic range.

pdf Please read
Errata Sheet
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数据表

Key Features

  • Active power accuracy:
  • <0.1% error over 5000: 1 dynamic range
  • <0.5% error over 10000: 1 dynamic range
  • Exceeds 50-60 Hz EN 50470-x, IEC 62053-2x, ANSI12.2x standard requirements for AC watt meters
  • Reactive power accuracy:
  • <0.1% error over 2000:1 dynamic range
  • Dual mode apparent energy calculation
  • Instantaneous and averaged power
  • RMS and instantaneous voltage and current
  • Under and overvoltage detection (sag and swell) and monitoring
  • Overcurrent detection and monitoring
  • UART and SPI serial interface with programmable CRC polynomial verification
  • Programmable LED and interrupt outputs
  • Four independent 24-bit 2ndorder sigma-delta ADCs
  • Two programmable gain chopper stabilized low-noise and low-offset amplifiers
  • Bandwidth 3.6 kHz @ -3 dB
  • Vccsupply range 3.3 V±10%
  • Supply current Icc4 mA (STPM32)
  • Input clock frequency 16 MHz, Xtal or external source
  • Twin precision voltage reference: 1.18 V with independent programmable TC, 10 ppm/°C typ.
  • Internal low drop regulator @ 3 V (typ.)
  • QFN packages
  • Operating temperature -40 °C~+85 °C

图案 资源

顶部

Technical Documentation

Product Specifications

描述 版本 大小
pdf
DS10272: ASSP for metering applications with up to four independent 24-bit 2nd order sigma-delta ADCs, 4 MHz OSF and 2 embedded PGLNA
2.0 3,595 KB

Application Notes

描述 版本 大小
pdf
AN4470: The STPM3x application calibration
1.1 1,485 KB

User Manual

描述 版本 大小
pdf
UM1719: The STPM3x evaluation software
1.1 1,324 KB
pdf
UM1748: EVALSTPM34, EVALSTPM33, EVALSTPM32 evaluation board
1.1 1,211 KB

Design Notes & Tips

描述 版本 大小
pdf
DT0039: Improving measuring accuracy and EFT immunity for STPM3x applications
1.0 1,919 KB

Presentations & Training Material

Presentations

描述 版本 大小
pdf
STPM32, STPM33, STPM34 Smart Metering ICs
825 KB

Related Tools and Software

Related Tools and Software

产品型号 描述
STEVAL-IPE023V1 USB interface tool for STPMxx family of energy meter ICs
EVALSTPM3X-3PH Poly-phase energy metering demonstration board with current transformers based on the STPM33, STPM34 and STM8S903
STSW-STPM001 STPM32/33/34 evaluation software
EVALSTPM34 Dual-phase energy metering evaluation board with 2 current transformers based on the STPM34

Publications and Collaterals

Flyer

描述 版本 大小
pdf
STPM32, STPM33, STPM34
730 KB

样品 & 购买

顶部
产品型号 Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) AutoshutdownAutomotive GradeOrder From STUnit Price (US$)*
@
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STPM34PreviewVFQFPN 32 5x5x1.0Tray-4085_-No availability reported, please contact our Sales officeEcopack2-
STPM34TRActiveVFQFPN 32 5x5x1.0Tape And Reel-4085_Free Samples.94Distributor reported inventory date: 2014-12-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA30003000
AVNETOrder NowAMERICA30000
Farnell Element14Order NowEUROPE29691
DIGIKEYOrder NowWORLDWIDE29901
FUTUREOrder NowWORLDWIDE8801
MOUSEROrder NowWORLDWIDE28641
Ecopack2-

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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