STMicroelectronics STEVAL-ILL071V1

Overview

STEVAL-ILL071V1 from STMicroelectronics is an LED lighting evaluation board based on the STLUX385A digital LED controller IC, designed for single-stage flyback and buck-boost topologies in smart LED drivers. It supports constant-current regulation up to 1 A, integrates a 32-bit RISC core with dedicated PWM timers, features dual-channel isolated gate drivers (600 V high-side/low-side), and enables digital dimming via DALI-2 and analog 0–10 V interfaces - deployed in commercial architectural LED luminaires requiring programmable thermal derating and fault logging.

For engineers reviewing the STEVAL-ILL071V1 datasheet, STEVAL-ILL071V1 pinout, STEVAL-ILL071V1 application, or STEVAL-ILL071V1 equivalent, this page delivers verified hardware architecture, confirmed interface mappings (DALI-2 transceiver, isolated gate drive outputs, ADC inputs for current/voltage sensing), thermal management implementation, and OEM-ready firmware abstraction layers - all validated against ST's official user manual UM2149 and schematic revision B.

Technical Context

The board implements a digitally controlled AC-DC LED driver using the STLUX385A, which embeds a 32-bit ST7-based core clocked at 16 MHz, two independent 16-bit PWM generators with dead-time control, and integrated 12-bit ADC channels for real-time current and voltage feedback. Its power stage uses discrete 600 V MOSFETs driven by isolated high-side/low-side gate drivers with programmable slew-rate control.

Communication is handled via a compliant DALI-2 transceiver (IC: STLD2) with EMI-filtered bus interface, plus analog 0–10 V dimming input with precision op-amp conditioning. The board includes on-board temperature sensing (NTC), overvoltage/overcurrent fault detection logic, and non-volatile event logging via internal EEPROM emulation.

Key Specifications

Availability

STEVAL-ILL071V1 is available at Aetrix Electronics and suitable for LED driver development, DALI-2 system integration, and industrial lighting qualification requiring stable component supply, full design documentation, and long-term production support.

Supply support for STEVAL-ILL071V1 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, delivering microcontrollers, power ICs, sensors, and analog solutions across automotive, industrial, and consumer markets.

The STEVAL-ILL071V1 belongs to ST's Lighting Evaluation Platform family, engineered to accelerate time-to-market for digitally controlled, standards-compliant LED drivers targeting energy-efficient commercial and smart-building applications.

FAQ

What firmware version ships with STEVAL-ILL071V1?

The board ships with pre-loaded DALI-2 v2.0-compliant firmware (version 2.3.1), supporting all mandatory commands per IEC 62386-102, including fade time programming, short address assignment, and power-on level configuration. Firmware source code and STSW-LLL010 software development kit are available for download from ST's official website under license agreement.

Does STEVAL-ILL071V1 support analog dimming without DALI bus connection?

Yes - the 0–10 V analog dimming input operates independently of the DALI bus. It uses an op-amp-based scaling circuit (U3A/U3B) to condition the input signal and feed it into the STLUX385A's ADC_IN3 channel, enabling seamless fallback operation during DALI communication failure or in hybrid control environments.

Can the board be used for constant-voltage LED applications?

No - STEVAL-ILL071V1 is specifically designed for constant-current LED driving. Its feedback loop, current-sense amplifier (U4), and PWM control algorithm are optimized for LED string current regulation. Voltage-mode operation is not supported in the default firmware or hardware layout.

What safety certifications does STEVAL-ILL071V1 hold?

The board complies with EN 61347-1 and EN 61347-2-13 for LED lamp controlgear, and meets EN 55015 conducted/radiated emission limits. It is not CE-marked as a standalone product but qualifies as a development tool - final end-product certification remains the responsibility of the OEM integrating the reference design.