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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 2nd order 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.
主な特徴
- 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 2nd order sigma-delta ADCs
- Two programmable gain chopper stabilized low-noise and low-offset amplifiers
- Bandwidth 3.6 kHz at -3 dB
- Vcc supply range 3.3 V ± 10%
- Supply current Icc 4.3 mA (STPM32)
- Input clock frequency 16 MHz, Xtal or external source
- Twin precision voltage reference: 1.18 V with independent programmable TC, 30 ppm/°C typ.
- Internal low drop regulator at 3 V (typ.)
- QFN packages
- Operating temperature from -40 °C to +105 °C
- Active power accuracy:
サンプル & 購入
| 製品型番 | パッケージ | Packing Type | Temperature (°C) | Autoshutdown | Marketing Status | Budgetary Price (US$)* | 数量 | ECCN (US) | Country of Origin | More info | Order from Distributors | Order from ST | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小値 | max | ||||||||||||
| STPM33TR | VFQFPN 32 5x5x1.0 | Tape And Reel | -40 | 105 | - |
Active
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0.89 | 1000 | EAR99 | PHILIPPINES | Check Availability | Get sample | |
(*) 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
ビデオ
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ソフトウェア製品
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写真 Part number 製造元 Description STSW-STPM001 ST STPM32/33/34 evaluation software STSW-STPM002 ST STM32 firmware for STPM32 access and a basic metrology application STSW-STPM3PHFW ST Firmware for EVALSTPM3x-3PH evaluation board STSW-STPM3PHGUI ST Evaluation software for EVALSTPM3x-3PH 製品型番STPM32/33/34 evaluation software
STM32 firmware for STPM32 access and a basic metrology application
Firmware for EVALSTPM3x-3PH evaluation board
Evaluation software for EVALSTPM3x-3PH
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評価ツール
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写真 Part number 製造元 Description 
EVALSTPM33 -- Single-phase with tamper monitoring energy metering demonstration board with CT and shunt based on the STPM33 EVALSTPM3X-3PH -- Poly-phase energy metering demonstration board with current transformers based on the STPM33, STPM34 and STM8S903 
STEVAL-IPE023V1 -- USB interface tool for STPMxx family of energy meter ICs 製品型番Single-phase with tamper monitoring energy metering demonstration board with CT and shunt based on the STPM33
Poly-phase energy metering demonstration board with current transformers based on the STPM33, STPM34 and STM8S903
USB interface tool for STPMxx family of energy meter ICs
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| 製品型番 | Marketing Status | パッケージ | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STPM33TR |
Active
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VFQFPN 32 5x5x1.0 | インダストリアル | Ecopack2 |
(**) The Material Declaration forms available on st.com 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.
