EVALST-3PHISOSD

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Design Win

3-phase full shunt current meter evaluation board based on ISOSD61 and STM32F413RH

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Product overview

Description

The EVALST-3PHISOSD evaluation board implements a complete 3-phase current meter with low-cost shunt current sensors.

The solution is based on the ISOSD61 device, a single channel, galvanically isolated, second order sigma-delta modulator, measuring current for each phase through a shunt current sensor. Sensing circuitry and PCB layout are optimized to maximize signal-to-noise ratio for optimal accuracy.

The ISOSD61 oversamples the signal using a clock (up to 15 MHz) distributed in a synchronized way by the microcontroller and outputs the current sigma-delta bitstreams.

The firmware embedded in the solution exploits the DFSDM filters of the STM32F413RH to convert the three bitstreams into 24-bit current data, at a selectable sampling rate.

The firmware also implements a virtual COM port communication to easily access the internal parameters to read data and to calibrate the board.

  • All features

    • 3 channels current decimated samples available
    • Sampling frequency and measurement bandwidth selectable
    • Communication through USB in virtual COM port mode with shell commands
    • 6 kV galvanic isolation between the phases with 8 mm creepage and clearance

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
EVALST-3PHISOSD
Active
CARD Industrial Ecopack1 -

EVALST-3PHISOSD

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) 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.

Sample & Buy

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ECCN (EU)
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EVALST-3PHISOSD Available at distributors

Distributor availability of EVALST-3PHISOSD

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STISO621
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ST EAR99 NEC ITALY

EVALST-3PHISOSD Active

ECCN (US):
EAR99
Budgetary Price (US$)*/Qty:
-

Part Number:

EVALST-3PHISOSD

Core Product:

STISO621

Supplier:

ST

ECCN (EU):

NEC

Country of Origin:

ITALY

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