产品概述
描述
The EVALSTPM-3PHISO evaluation board implements a complete three-phase energy meter with low-cost shunt current sensors.
The solution is based on the STPMS2 device, a double channel, 24-bits second order sigma-delta modulator, measuring voltage and current for each phase through a voltage divider and a shunt current sensor. Sensing circuitry and PCB layout are optimized to maximize signal-to-noise ratio for optimal accuracy.
The STPMS2 oversamples the signal using a 4 MHz clock distributed in a synchronized way by the microcontroller and outputs voltage and current sigma-delta bitstreams, multiplexed on the same pin.
The two-wire communication between STPMS2 modulator and MCU is isolated by STISO621W, 6 kV galvanic isolated interface, allowing up to 100 Mbps rate and low pulse distortion (<3ns) for safe and fast data transfer between isolated domains.
The FW embedded in the solution exploits the DFSDM filters of the STM32F413RH to convert the six bitstreams into 24-bits voltage and current data, at 200 us rate. All the metrology parameters are computed real time on a 200 us basis.
Two LEDs are available for active and reactive pulses generation.
The FW also implements a virtual com port communication to easily access the internal parameters to read metrology data, to modify the internal configuration for a high flexibility of the application, and to calibrate the board.
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所有功能
- Compliant to EN 50470-x, IEC 62053-2x, ANSI12.2x standard requirements for AC watt meters
- Active wideband, active fundamental, reactive and apparent power/energy calculation for each phase and cumulative
- Accuracy Class 0.5 according to IEC 62053-22 on 3-ph active/apparent power measurement
- Accuracy Class 1 according to IEC 62053-21 on 3-ph reactive power measurement
- 6 channels voltage and current decimated samples available @200 us
- 5 kHz measurement bandwidth
- RMS and THD (optional) calculation of each voltage and current signal
- Selectable high pass filter for DC measurement
- Line period and phase shift measurement for each phase
- Phase voltage delays
- Full calibration (amplitude, power offset and samples offset for DC measurement)
- Two configurable LED for pulsed outputs
- Communication through USB in virtual com port mode with shell commands
- 6 kV galvanic isolation between the phases with 8 mm creepage and clearance
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All tools & software
全部资源
| 资源标题 | 版本 | 更新时间 |
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产品规格 (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 2.0 | 25 Mar 2021 | 25 Mar 2021 |
用户手册 (2)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 2.0 | 04 May 2021 | 04 May 2021 | ||
| 2.0 | 04 May 2021 | 04 May 2021 |
Evaluation Board Terms of Use (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 1.7 | 29 May 2023 | 29 May 2023 |
全部资源
| 资源标题 | 版本 | 更新时间 |
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Board Manufacturing Specifications (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| ZIP | 1.0 | 10 Nov 2020 | 10 Nov 2020 |
物料清单 (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 1.0 | 16 Nov 2020 | 16 Nov 2020 |
Schematic Pack (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 1.0 | 16 Nov 2020 | 16 Nov 2020 |
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | WEEE Compliant | 材料声明** |
|---|---|---|---|---|---|---|
| EVALSTPM-3PHISO | 批量生产 | CARD | 工业 | Ecopack1 | - | |
EVALSTPM-3PHISO
Package:
CARDMaterial Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
样片和购买
| 产品型号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 封装 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | 供应商 | 核心产品 | 供应商 | 核心产品 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EVALSTPM-3PHISO | | | distributors 无法联系到经销商，请联系我们的销售办事处 | ITALY | EAR99 | NEC | ST | STISO621 | ST | STISO621 |
EVALSTPM-3PHISO 批量生产