STMicroelectronics STEVAL-IFP019V1

Overview

STEVAL-IFP019V1 from STMicroelectronics is a quad high-side smart-power solid-state relay demonstration board based on the VNI4140K-32 IC, designed for industrial PLC output stages. It delivers 1 A per channel with 80 mΩ typical R_DS(on), IEC 61131-2 compliance, open-drain diagnostic outputs, and independent thermal shutdown per channel.

For engineers reviewing the STEVAL-IFP019V1 datasheet, STEVAL-IFP019V1 pinout (J1/J5 connectors), STEVAL-IFP019V1 application in PLC I/O modules, or STEVAL-IFP019V1 equivalent evaluation boards, this page provides verified hardware configuration, protection behavior, interface compatibility, and design integration guidance for industrial control systems.

Technical Context

The board implements four independent high-side switch channels using the VNI4140K-32, each featuring current limitation (1.1–2.6 A), junction and case overtemperature protection, and loss-of-ground detection. Diagnostic status signals (STAT1–STAT4) are open-drain, 3.3 V CMOS/TTL compatible, and mapped to J1/J5 headers.

Input control (IN1–IN4) and power supply (Vdd, GND) are routed via screw-terminal connectors. Fast demagnetization circuitry supports inductive load switching, and EMC robustness meets industrial standards for PLC environments.

Key Specifications

Availability

STEVAL-IFP019V1 is available at Aetrix Electronics and suitable for programmable logic controllers (PLCs), industrial I/O modules, and ruggedized embedded control systems requiring stable component supply, long-lifecycle support, and certified industrial-grade evaluation hardware.

Supply support for STEVAL-IFP019V1 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, Switzerland, specializing in automotive, industrial, and power management solutions with broad portfolio coverage and vertical manufacturing capability.

The STEVAL-IFP019V1 belongs to ST's Smart Power Evaluation Board family, engineered to accelerate validation of high-side driver ICs in industrial automation applications requiring functional safety, thermal resilience, and IEC-compliant reliability.

FAQ

What is the purpose of the J1 and J5 connectors on the STEVAL-IFP019V1?

J1 and J5 are identical bi-directional screw-terminal connectors providing standardized access to all control and diagnostic signals. J1 carries IN1–IN4, STAT1–STAT4, Vdd, and GND; J5 duplicates these for seamless integration with ST's ecosystem tools and existing test fixtures without adapter wiring.

Does the board support inductive load switching, and how is demagnetization handled?

Yes - the board integrates fast demagnetization circuitry per channel to safely dissipate stored energy in solenoids, valves, and relays. This prevents voltage spikes exceeding 40 V during turn-off and eliminates need for external flyback diodes in standard configurations.

How does thermal management work across the four channels?

Each channel features independent junction and case overtemperature protection with non-simultaneous restart. If one channel shuts down due to thermal overload, others remain operational - preserving partial system functionality and enabling graceful degradation in PLC output stages.

Can the STEVAL-IFP019V1 be used for safety-critical applications?

No - while compliant with IEC 61131-2 for programmable controllers, the board is not certified to IEC 61508 or ISO 13849. It serves as a functional demonstrator and development tool, not a safety-rated subsystem; end-equipment certification remains the responsibility of the system integrator.