STMicroelectronics STEVAL-ILL019V1

Overview

STEVAL-ILL019V1 from STMicroelectronics is a 32 W (wide AC input) / 42 W (EU range) isolated 4-channel RGGB LED driver demonstration board based on the L6562A transition-mode PFC controller and ST7FLIT15B microcontroller, delivering constant 350 mA per channel across 5–13 LEDs per string for architectural lighting and color-tunable signage.

For engineers reviewing the STEVAL-ILL019V1 datasheet, STEVAL-ILL019V1 schematic, STEVAL-ILL019V1 application, or STEVAL-ILL019V1 equivalent, this board supports manual/automatic RGBW brightness regulation, EN55015/EN61000-3-2 compliance verification, and flyback-based isolated SMPS design validation with individual channel current control.

Technical Context

The board implements a high-power-factor isolated flyback converter using four L6562A controllers-one per LED channel-each regulating output current via primary-side sensing and ZCD-based zero-current detection. The ST7FLIT15B MCU manages mode selection (automatic color cycling vs. manual adjustment), PWM dimming signals, and inter-channel synchronization.

Input rectification uses STPS1H100 Schottky diodes; power switches are STS4NF10 MOSFETs; output filtering employs 100 nF/50 V ceramic capacitors per channel. PCB layout supports double-sided assembly (145 × 75 × 27 mm) with dedicated potentiometer inputs for manual RGGB tuning.

Key Specifications

Availability

STEVAL-ILL019V1 is available at Aetrix Electronics and suitable for LED architectural lighting, retail display systems, and tunable-white signage requiring stable component supply, regulatory pre-compliance validation, and rapid prototyping of multi-channel constant-current drivers.

Supply support for STEVAL-ILL019V1 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 analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

This evaluation board belongs to ST's STEVAL lighting demonstration platform family, engineered to accelerate development of compliant, high-efficiency LED drivers with programmable color control and PFC integration.

FAQ

What is the primary function of the ST7FLIT15B MCU on this board?

The ST7FLIT15B microcontroller handles mode selection (automatic color cycling vs. manual RGGB adjustment), generates synchronized PWM signals for each channel, reads external potentiometer inputs, and coordinates timing between the four L6562A controllers to prevent beat frequencies and ensure smooth color transitions.

Can STEVAL-ILL019V1 drive mixed-color LED strings with different forward voltages?

Yes - each of the four channels operates independently with primary-side constant-current regulation, allowing simultaneous driving of red (~2.2 V), green (~3.2 V), blue (~3.4 V), and white (~3.2 V) LEDs across 5–13 series devices per string without cross-channel interference or current mismatch.

Does this board support DALI or DMX512 interface?

No - STEVAL-ILL019V1 has no built-in DALI or DMX512 transceiver circuitry. Control is limited to onboard pushbuttons, external potentiometers, or direct MCU pin access for custom firmware adaptation; adding such protocols requires external interface ICs and firmware rework.

What safety certifications does STEVAL-ILL019V1 meet?

The board complies with EN55015 (radiated/conducted emissions) and EN61000-3-2 (harmonic current limits) for Class C equipment. It is not certified to IEC 62368-1 or UL 8750 as a standalone product; end-equipment certification remains the responsibility of the system integrator.