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.
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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
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Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Core Product | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EVALST-3PHISOSD | | | distributors No availability of distributors reported, please contact our sales office |
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EVALST-3PHISOSD Active
(*) 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