STMicroelectronics STEVAL-ISW001V1

Overview

STEVAL-ISW001V1 from STMicroelectronics is a ready-to-use 2.5 kW manual metal arc (MMA) welding demonstration board featuring 135 A maximum output current, 80 V peak output voltage, 70 kHz switching frequency, >75% efficiency, and 185–265 Vac input range. It integrates a dedicated power board and control board for industrial and DIY iron/steel welding applications.

For engineers reviewing the STEVAL-ISW001V1 datasheet, STEVAL-ISW001V1 pinout, STEVAL-ISW001V1 application, or STEVAL-ISW001V1 equivalent, this evaluation platform enables rapid validation of ST's high-power silicon devices-including IGBTs, gate drivers, and analog controllers-in real-world arc welding systems with thermal, EMI, and dynamic load requirements.

Technical Context

The system implements a two-board architecture: a main power board hosting IGBT-based inverter stages, high-current rectification, and magnetic components optimized for airflow and thermal management; and a separate control board centered on the SG3525 PWM controller and TSM102 quad operational amplifier/comparator IC for arc regulation, current sensing, soft-start, and overcurrent protection.

Control functions include real-time welding current feedback via shunt sensing, bus voltage monitoring, temperature protection, duty cycle limiting, and shutdown signaling-enabling stable open-circuit voltage, consistent arc ignition, and safe short-circuit recovery per MMA process standards.

Key Specifications

Availability

STEVAL-ISW001V1 is available at Aetrix Electronics and suitable for industrial welding equipment prototyping, educational lab demonstrations, and embedded power electronics development requiring stable component supply, Gerber file access, and reference design reuse.

Supply support for STEVAL-ISW001V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power devices, analog ICs, and sensors for industrial, automotive, and consumer markets.

This demonstration board belongs to ST's STEVAL (ST Evaluation) series, engineered to showcase robustness and system-level integration of ST's high-voltage, high-current silicon-especially IGBTs, gate drivers, and analog controllers-in demanding power conversion applications like arc welding.

FAQ

Is STEVAL-ISW001V1 still in production?

No-STEVAL-ISW001V1 is marked obsolete by STMicroelectronics as of its original 2010 release. It remains available through authorized distributors and Aetrix Electronics for legacy design support, educational use, and reference implementation analysis. No new revisions or manufacturing runs are planned.

What key ST components are used on the power and control boards?

The power board uses ST's IGBTs (e.g., STGP10NC60KD), fast recovery diodes, and magnetic components; the control board integrates the SG3525 PWM controller and TSM102 quad op-amp/comparator. These parts are explicitly identified in the schematic diagrams and bill-of-materials referenced in Doc ID 17270.

Can the Gerber files be obtained for custom modifications?

Yes-ST publicly released the Gerber files for STEVAL-ISW001V1, and they remain accessible via the archived product page on www.st.com under document ID 17270. Aetrix Electronics can provide direct links or verified file packages upon request for PCB redesign or thermal layout adaptation.

Does this board support other welding processes like MIG or TIG?

No-it is specifically designed and validated only for Manual Metal Arc (MMA) welding. Its fixed output characteristics, open-circuit voltage, and control loop parameters (e.g., soft-start timing, current ramp profiles) are tuned for stick electrode behavior-not continuous wire feed or high-frequency arc starting required by MIG/TIG.