Scribd
Upload
55 views3 pages

STSW Isosd001

This document summarizes an embedded firmware for a 3-phase current sensing evaluation board based on the ISOSD61 isolated sigma-delta modulator and STM32F413RH MCU. The firmware implements hardware access and signal acquisition from up to three current sensors. It utilizes the MCU's DFSDM peripheral to convert bitstreams into 24-bit current data samples at 200 us. The firmware also provides register access and virtual COM port communication to read measurements and configure the board's operation.

Uploaded by

luze Yu
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
55 views3 pages

STSW Isosd001

This document summarizes an embedded firmware for a 3-phase current sensing evaluation board based on the ISOSD61 isolated sigma-delta modulator and STM32F413RH MCU. The firmware implements hardware access and signal acquisition from up to three current sensors. It utilizes the MCU's DFSDM peripheral to convert bitstreams into 24-bit current data samples at 200 us. The firmware also provides register access and virtual COM port communication to read measurements and configure the board's operation.

Uploaded by

luze Yu
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 3

STSW-ISOSD001

Data brief

Embedded firmware for 3-phase full shunt current sensing evaluation board
based on ISOSD61 and STM32F413RH

Features
• 3-phase current sensing firmware for ISOSD61 isolated sigma-delta modulator
• Implements hardware access layer to ISOSD61 devices for signal acquisition
of up to three channels (three-current monitoring) @200 us
• DFSDM peripheral autonomously implementing digital filtering of signals
• 3-channel current decimated samples available
• 2.5 kHz measurement bandwidth
• USB communication available through virtual COM port mode

Description
Product status link
The STSW-ISOSD001 firmware is embedded in the EVALST-3PHISOSD evaluation
STSW-ISOSD001
board to implement 3-current sensing for motor control application with low-cost
ISOSD61 shunt current sensors.
EVALST-3PHISOSD The firmware library implements:
• Signal acquisition from up to three current sensors
STM32F413RH
• A set of registers, containing current measurements and calibration/
configuration data.
The firmware exploits the DFSDM filters of the STM32F413RH to convert the three
bitstreams into 24-bit current data, at 200 us rate.
The STPM3x-like registers allow the application access to the virtual device, which
can be read/configured by the hardware interface layer.
The firmware also implements a virtual COM port communication to easily access the
internal parameters to read measured data, to modify the internal configuration for a
high flexibility of the application, and to calibrate the board.

DB4979 - Rev 1 - March 2023 www.st.com


For further information contact your local STMicroelectronics sales office.
STSW-ISOSD001

Revision history
Table 1. Document revision history

Date Version Changes

16-Mar-2023 1 Initial release.

DB4979 - Rev 1 page 2/3


STSW-ISOSD001

IMPORTANT NOTICE – READ CAREFULLY


STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST
products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST
products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgment.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of
purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. For additional information about ST trademarks, refer to www.st.com/trademarks. All other product or service names
are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2023 STMicroelectronics – All rights reserved

DB4979 - Rev 1 page 3/3

You might also like