STMicroelectronics STEVAL-ILL075V1

Overview

STEVAL-ILL075V1 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 up to 6-channel synchronous/interleaved PWM control with 1.3 ns resolution, 10-bit ADC with op-amp gain extension, and 4 ultra-fast comparators (≤50 ns propagation).

For engineers reviewing the STEVAL-ILL075V1 datasheet, STEVAL-ILL075V1 pinout, STEVAL-ILL075V1 application, or STEVAL-ILL075V1 equivalent, this board enables rapid validation of STLUX385A-based smart lighting architectures-including DALI-controlled multi-string LED drivers, resonant LLC/PFC topologies, and zero-current detection–driven synchronous rectification-using on-board measurement points, configurable jumpers, and SWIM debug interface.

Technical Context

The STEVAL-ILL075V1 implements the STLUX385A in TSSOP38 package, interfacing its six SMED PWM outputs (PWM0–PWM5), four comparator inputs (CMP0–CMP3), eight ADC channels, and DALI transceiver circuitry to external test points and LED load terminals. It integrates a 96 MHz PLL clock source, internal 16 MHz RC oscillator, and dual low-power 153.6 kHz LSI for AWU timing.

All SMEDs are preconfigured via onboard firmware to operate in coupled mode for interleaved half-bridge drive, while the DALI peripheral uses hardware encoder/decoder with configurable noise rejection filter and reverse-polarity protection on Tx/Rx lines per IEC 62386-102 compliance.

Key Specifications

Availability

STEVAL-ILL075V1 is available at Aetrix Electronics and suitable for LED driver reference design, DALI-compliant lighting system validation, and digital power supply topology prototyping requiring stable component supply and full functional demonstration capability.

Supply support for STEVAL-ILL075V1 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 microcontrollers, power management, analog, and automotive ICs with over 40 years of industrial-grade reliability and manufacturing scale.

The STEVAL-ILL075V1 belongs to ST's Lighting & Power Conversion Evaluation Kit product line, engineered specifically to accelerate adoption of STLUX digital controllers in high-efficiency, standards-compliant LED drivers and digitally controlled SMPS designs.

FAQ

Does STEVAL-ILL075V1 support both STLUX385A and STLUX325A?

No. STEVAL-ILL075V1 is specifically designed for the STLUX385A (TSSOP38 package), which provides six dedicated SMED PWM output pins including PWM5. The STLUX325A (VFQFPN32) lacks PWM5 and has only five SMED outputs, making it incompatible with the board's full PWM routing and jumper configuration.

Can the DALI interface be used for master-mode control?

No. The STEVAL-ILL075V1 implements the STLUX385A in slave-only DALI mode per IEC 62386-102, with hardware encoder/decoder configured for receiving commands and reporting status. Master functionality requires external microcontroller coordination and is not supported by the onboard firmware or circuitry.

What power supply requirements does STEVAL-ILL075V1 have?

The board accepts a single 12 V DC input (via terminal block or barrel jack) and internally generates 3.3 V and 5 V rails for the STLUX385A core, analog peripherals, and DALI transceiver. Input current draw is ≤1.2 A under full LED load testing with all six SMEDs active and DALI traffic enabled.

Is SWIM debugging supported without additional hardware?

Yes. STEVAL-ILL075V1 includes a standard 4-pin SWIM header compatible with ST-LINK/V2 or ST-LINK/V3 debug probes. No level-shifting or adapter is required-the board routes SWIM signals directly to the STLUX385A's dedicated pin (P2.3) with appropriate pull-up and ESD protection.