STMicroelectronics STEVAL-IFP035V1

Overview

STEVAL-IFP035V1 from STMicroelectronics is an evaluation board for factory automation digital-input protection, built around two CLT03-2Q3 self-powered current-limited termination devices. It supports four industrial sensor inputs (2 isolated opto-coupler, 2 non-isolated LVTTL), operates up to 60 V with reverse-polarity tolerance, requires no external power supply, and complies with IEC61131-2 Type 1 and Type 3 standards.

For engineers reviewing the STEVAL-IFP035V1 datasheet, STEVAL-IFP035V1 pinout, STEVAL-IFP035V1 application, or STEVAL-IFP035V1 equivalent, this board enables rapid validation of self-powered digital input conditioning, EMI-robust signal filtering, fault-mode behavior under overvoltage, and test-pulse verification for PLC I/O module design.

Technical Context

The board implements dual CLT03-2Q3 devices, each providing two independent high-side current-limiting channels with integrated reverse-polarity rectification, glitch filtering, voltage regulation, and fault detection at >30 V. Input thresholds are defined across ±60 V with discrete ON/OFF regions and transition zones per IEC61131-2.

Isolated outputs drive TLP281 optocouplers; non-isolated outputs deliver LVTTL-compatible signals (0.4 V low, 2.4–3.6 V high) directly to MCU GPIOs. Test pulse jumpers allow per-channel functional verification without external stimulus generators.

Key Specifications

Availability

STEVAL-IFP035V1 is available at Aetrix Electronics and suitable for factory automation PLC I/O modules, industrial sensor interface validation, and safety-critical digital input protection requiring stable component supply and traceable sourcing.

Supply support for STEVAL-IFP035V1 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, analog ICs, power management, and industrial interface solutions.

The STEVAL-IFP035V1 belongs to ST's Factory Automation evaluation platform series, developed specifically to accelerate robust, standards-compliant digital input circuit design for programmable logic controllers and industrial I/O modules.

FAQ

Does STEVAL-IFP035V1 require an external power supply?

No. The board derives operating power entirely from the input sensor lines via the CLT03-2Q3's self-powered architecture. Each channel regulates and limits current to sustain internal operation across ±60 V input ranges without auxiliary rails.

How is isolation implemented on the board?

Isolation is achieved using TLP281 optocouplers driven by dedicated CLT03-2Q3 output channels. Signal paths between field-side inputs and controller-side GPIOs are galvanically separated, with reinforced insulation rated for industrial environments per IEC61131-2.

What test capabilities does the board provide?

The board includes jumpers (JP1–JP7) enabling manual test pulses on any input channel to verify correct ON/OFF state transitions, fault-mode activation at >30 V, and output signal integrity - eliminating need for external pulse generators during initial validation.

Can STEVAL-IFP035V1 be used with non-ST microcontrollers?

Yes. Its LVTTL-compatible non-isolated outputs (0.4 V low / ≥2.4 V high) and optocoupler-isolated outputs interface directly with any 3.3 V or 5 V logic processor, including ARM Cortex-M, PIC, ESP32, or legacy 8051-based PLC controllers.