STMicroelectronics STEVAL-IFP048V1

Overview

STEVAL-IFP048V1 from STMicroelectronics is an industrial digital output expansion board based on the ISO808A-1 octal high-side smart power solid-state relay in TFQFPN32 package, featuring 2.5 kVRMS galvanic isolation, 20 MHz SPI daisy-chaining interface, and 1.0 A per-channel drive capability for inductive loads. It operates with 10–33 V process-side supply (J10 open/J9 closed), 3.3–5 V logic-side supply, and supports stacked 16-channel evaluation.

For engineers reviewing the STEVAL-IFP048V1 datasheet, STEVAL-IFP048V1 pinout, STEVAL-IFP048V1 application, or STEVAL-IFP048V1 equivalent, key selection factors include isolated 8-channel high-side switching, SPI-controlled diagnostics (PGOOD, STATUS, FAULT), Arduino® UNO R3 and STM32 Nucleo compatibility, and configurable process voltage range (9.2–36 V).

Technical Context

The board implements galvanic isolation between microcontroller (logic side) and industrial load (process side) via the ISO808AQTR-1, which integrates eight independent high-side switches with embedded protection circuitry including overload, overtemperature, loss-of-ground, and undervoltage lock-out. Each channel delivers up to 1.0 A with R_ON(MAX) = 260 mΩ and supports fast decay for inductive loads.

SPI communication runs at up to 20 MHz with daisy-chain capability across multiple boards, enabling synchronized control and status reporting. Diagnostic signals - PGOOD (VCC monitoring), STATUS (overheating/communication error), and OUT_EN (output enable) - are exposed via configurable jumpers and indicated by dedicated LEDs (red, yellow, green).

Key Specifications

Availability

STEVAL-IFP048V1 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, STM32-based automation prototyping, and isolated digital output module validation requiring stable component supply and rapid evaluation turnaround.

Supply support for STEVAL-IFP048V1 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 specializing in automotive, industrial, and power management solutions, with broad portfolio coverage from microcontrollers to intelligent power devices.

This board belongs to ST's STEVAL evaluation platform family, designed specifically to accelerate development of industrial digital output systems using their high-integration smart power switches and isolation-enabled interfaces.

FAQ

What microcontroller platforms is STEVAL-IFP048V1 directly compatible with?

STEVAL-IFP048V1 is natively compatible with STM32 Nucleo boards (e.g., NUCLEO-F401RE, NUCLEO-G431RB) via Morpho and Arduino® UNO R3 connectors. It uses standard GPIO and SPI pins without level-shifting, supporting 3.3 V or 5 V logic depending on configuration. No firmware adaptation is required for basic SPI communication and output control.

How does the daisy-chain SPI functionality work across multiple STEVAL-IFP048V1 boards?

Daisy-chaining uses the SDO (serial data out) of one board connected to the SDI (serial data in) of the next, with shared CLK, SS, and MISO lines. The ISO808A-1 supports this topology via its internal shift register, allowing single-master control of up to 16 outputs across two stacked boards while maintaining individual channel diagnostics and PGOOD signaling.

What protections are implemented on the process-side outputs?

Each output channel includes real-time protection against overload (current limiting), overtemperature (thermal shutdown), loss-of-ground (open-load detection), and undervoltage lock-out. Fault conditions are reported through the FAULT pin and STATUS LED. Fast decay circuitry prevents voltage spikes during inductive load turn-off, reducing stress on the switch and external components.

Can STEVAL-IFP048V1 operate standalone without a Nucleo board?

Yes - the board can operate standalone with external 3.3–5 V logic supply and 9.2–36 V process supply. Jumpers J3, J6, J7, and J9/J10 configure LED feedback and voltage ranges. SPI commands may be issued from any microcontroller or logic analyzer supporting 20 MHz SPI, and all diagnostic signals remain accessible via test points and headers.