STMicroelectronics STEVAL-IFP034V1

Overview

STEVAL-IFP034V1 from STMicroelectronics is an evaluation board for the IPS161H single high-side driver IC, designed for SIL2/SIL3-compliant industrial safety systems. It supports 8–60 V input voltage, delivers up to 0.5 A output current, features programmable cut-off delay, reverse polarity protection, and galvanic isolation via optocouplers OPTO1/OPTO2. Used with STEVAL-PCC009V2 and PC-based GUI for functional validation.

For engineers reviewing the STEVAL-IFP034V1 datasheet, STEVAL-IFP034V1 pinout, STEVAL-IFP034V1 application, or STEVAL-IFP034V1 equivalent, this board enables rapid verification of IPS161H diagnostics (open-load detection, thermal shutdown), isolated control interface timing, and IEC 61000-4-2/4-4/4-5 transient immunity in safety-critical power switching designs.

Technical Context

The board implements optical isolation between MCU interface (3.3 V/5 V logic) and 8–60 V power domain using dual optocouplers: OPTO1 routes forward control signals to IPS161H IN1, while OPTO2 feeds back diagnostic status (DIAG, CoD) to the host microcontroller. Isolation withstands ≥4 kV per IEC 61000-4-5 surge testing.

Protection architecture includes SMCJ40CA TVS (U1) on VCC–PGND for ESD/EFT/surge suppression, STPS1H100 Schottky diode (D1) for reverse polarity blocking, and dedicated red/green LEDs for real-time channel ON/OFF and fault indication (open load, cut-off, thermal protection).

Key Specifications

Availability

STEVAL-IFP034V1 is available at Aetrix Electronics and suitable for industrial safety validation, SIL2/SIL3 system prototyping, and high-side switch qualification requiring stable component supply and traceable sourcing.

Supply support for STEVAL-IFP034V1 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 strong safety-certified IP.

This board belongs to ST's Industrial Safety Evaluation Kit product line, developed specifically to accelerate functional safety validation of high-side drivers like IPS161H in IEC 61508 and ISO 13849-compliant systems.

FAQ

What is the required host interface to operate STEVAL-IFP034V1?

The board requires connection via a 30-way flat cable to STEVAL-PCC009V2, which acts as a USB-to-digital interface bridge. The STEVAL-PCC009V2 must be connected to a Windows PC running ST's proprietary GUI software for full diagnostic and control functionality.

Does STEVAL-IFP034V1 support multiple channel operation?

No - it is a single-channel evaluation platform built exclusively around the IPS161H high-side driver. The schematic shows only one OUT pin (OUT8) routed to the load connector; all other OUT pins (9–11) are unpopulated and reserved for future variants.

How is reverse polarity protection implemented?

Reverse polarity protection is achieved using STPS1H100 Schottky diode (D1) placed in series with the input supply rail. This prevents damage when VCC and GND are swapped, limiting reverse current to <1 µA at −8 V while maintaining low forward voltage drop (<0.55 V @ 0.5 A).

Can the cut-off delay time be adjusted without firmware changes?

Yes - the cut-off delay is set by external resistor R7 (47 kΩ default) connected to the CoD pin of IPS161H. Replacing R7 with values between 10 kΩ and 100 kΩ adjusts delay from ~10 ms to ~200 ms, enabling hardware-tunable safety response timing without MCU intervention.