STMicroelectronics X-NUCLEO-OUT11A1

Overview

X-NUCLEO-OUT11A1 from STMicroelectronics is an industrial digital output expansion board for STM32 Nucleo development platforms, built around the ISO808 octal high-side smart power switch. It delivers galvanically isolated 0.7 A per channel switching (9.2–36 V process side), <6 µs synchronous control jitter, and integrated overload/overtemperature/loss-of-ground protection. It is used to evaluate solid-state relay behavior in PLC I/O modules interfacing inductive industrial loads.

For engineers reviewing the X-NUCLEO-OUT11A1 datasheet, X-NUCLEO-OUT11A1 pinout, X-NUCLEO-OUT11A1 application, or X-NUCLEO-OUT11A1 equivalent, key selection factors include isolated 8-channel high-side drive capability, dual control modes (direct/synchronous), Arduino® UNO R3 and Morpho connector compatibility, and STM32 Nucleo board stacking support.

Technical Context

The board implements galvanic isolation via the ISO808's embedded 2 kV_RMS barrier between logic-side GPIOs and process-side 0.7 A outputs. It supports two real-time control modes: direct mode (jitter <20 µs) and synchronous mode (jitter <6 µs), enabling precise timing-critical load switching in industrial automation.

Process-side supply is configurable (9.2–36 V) using jumpers J9/J10; logic-side operates at 3.3–5 V. Protection features include undervoltage lock-out, fast decay for inductive loads, and dedicated diagnostic LEDs for overtemperature, communication error, and output enable status.

Key Specifications

Availability

X-NUCLEO-OUT11A1 is available at Aetrix Electronics and suitable for programmable logic controller (PLC) I/O module prototyping, industrial sensor actuation systems, and STM32-based factory automation test benches requiring stable component supply and rapid evaluation turnaround.

Supply support for X-NUCLEO-OUT11A1 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal devices for industrial, automotive, and consumer applications.

The X-NUCLEO-OUT11A1 belongs to ST's Nucleo expansion board family, engineered specifically to accelerate evaluation and integration of intelligent power switches-like the ISO808-in industrial digital output systems with safety-critical isolation and diagnostics.

FAQ

Which STM32 Nucleo boards are directly compatible with X-NUCLEO-OUT11A1?

The X-NUCLEO-OUT11A1 is mechanically and electrically compatible with NUCLEO-F401RE and NUCLEO-G431RB development boards. Its Arduino® UNO R3 and ST Morpho connectors provide standardized pin mapping for GPIO, power, and ground, enabling plug-and-play operation without adapter hardware or firmware modification.

How is galvanic isolation implemented on this board?

Galvanic isolation is provided by the ISO808 IC itself, which integrates a 2 kV_RMS isolation barrier between its logic-side control pins (IN1–IN8, OUT_EN, SYNCH) and process-side power outputs (OUT1–OUT8). No external isolators or optocouplers are used-the isolation is monolithic and certified within the ISO808 PowerSO36 package.

What diagnostic feedback does the board provide via LEDs?

The board uses three LED types: green LEDs (J6/J7) indicate individual output ON/OFF state per channel; a red LED (J3, pins 1–2) signals common overtemperature or communication fault; a yellow LED (J3, pins 5–6) shows active output enable status (OUT_EN assertion). All are user-jumper configurable.

Can X-NUCLEO-OUT11A1 operate independently of an STM32 Nucleo board?

Yes-when used stand-alone, the board accepts up to 5.5 V on its VCC pin (bypassing Nucleo-supplied 3.3 V), and process-side voltage remains fully configurable (9.2–36 V via J9/J10). Control signals must be supplied externally at valid logic levels, and all jumpers (J1–J7, J9–J10) must be manually set to match the intended interface mode and protection configuration.