STMicroelectronics STEVAL-ILL068V1

Overview

STEVAL-ILL068V1 from STMicroelectronics is an evaluation board for the STLUX385A digital lighting controller IC, designed to demonstrate high-precision PWM generation via six SMED units, DALI 2.0-compliant interface, and analog signal conditioning for LED driver and digital power supply development. It supports IEC 62386-102/207 slave operation, 1.3 ns PWM resolution, and real-time zero-current detection using four <50 ns comparators.

For engineers reviewing the STEVAL-ILL068V1 datasheet, STEVAL-ILL068V1 pinout, STEVAL-ILL068V1 application, or STEVAL-ILL068V1 equivalent, this board enables rapid validation of STLUX385A-based architectures including multi-channel LED dimming with LINEAR/PWM hybrid control, PFC + LLC dual-stage topologies, DALI-2 sensor-integrated luminaires, and synchronous rectification in buck/boost converters.

Technical Context

The STEVAL-ILL068V1 implements the STLUX385A's full SMED subsystem-six autonomous state machines each configurable for single/coupled operation, reacting to DIGIN, comparator outputs, or internal PWM feedback within 10.4 ns. Its hardware DALI transceiver supports 1.2/2.4/4.8 kHz bus frequencies with programmable noise rejection and reverse-polarity protection on Tx/Rx lines.

Onboard analog resources include four comparators with 4-bit internal references and sub-50 ns propagation delay, plus an 8-channel 10-bit ADC with x1/x4 programmable gain and op-amp front-end enabling 12-bit-equivalent resolution for current/voltage sensing in closed-loop SMPS control.

Key Specifications

Availability

STEVAL-ILL068V1 is available at Aetrix Electronics and suitable for LED driver reference design, DALI-2 compliant luminaire qualification, and digital power supply topology prototyping requiring stable component supply and production-ready firmware validation support.

Supply support for STEVAL-ILL068V1 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 intelligent power, sensing, connectivity, and microcontroller solutions across automotive, industrial, and consumer markets.

The STEVAL-ILL068V1 belongs to ST's STLUX family-digital controllers purpose-built for lighting and power conversion, integrating SMED-based PWM generation, DALI hardware acceleration, and analog signal conditioning to replace discrete timing and protection circuits in high-reliability LED drivers and SMPS.

FAQ

What is the primary function of the STEVAL-ILL068V1 evaluation board?

The STEVAL-ILL068V1 is a fully assembled and tested hardware platform for evaluating the STLUX385A digital lighting controller. It demonstrates real-time PWM generation using six SMED units, DALI 2.0 slave communication, analog sensing with comparators and ADC, and system-level integration with external MOSFET gate drivers and current sensors-enabling immediate firmware development and topology validation without custom PCB design.

Does the board support both PWM and analog (0–10 V) dimming control?

Yes-the STEVAL-ILL068V1 supports hybrid dimming by leveraging the STLUX385A's dual-mode capability: six independent SMEDs generate precise PWM signals for LED channel control, while its 10-bit ADC with programmable gain and op-amp front-end measures 0–10 V analog dimming inputs and provides closed-loop feedback for linear current regulation in constant-current LED drivers.

Can the board be used to validate PFC + LLC dual-stage power supplies?

Yes-the board's STLUX385A implementation includes dedicated SMED coupling modes, fast digital inputs (DIGIN), and comparator outputs optimized for zero-current switching detection. Combined with its 96 MHz PLL and <50 ns comparator response, it enables accurate phase-shifted control of LLC resonant converters and average-current-mode control of boost PFC stages in integrated digital power supply designs.

Is DALI bus termination and biasing included on the board?

Yes-the STEVAL-ILL068V1 integrates a complete DALI physical layer: bidirectional bus transceiver with reverse-polarity protection on Tx/Rx lines, configurable noise rejection filter, 220 Ω bus termination resistor, and 60 mA constant-current DALI bias supply-fully compliant with IEC 62386-102 requirements for Class 1 slave devices operating at 1.2/2.4/4.8 kHz bus frequencies.