STMicroelectronics STEVAL-ILL076V2

Overview

STEVAL-ILL076V2 from STMicroelectronics is an 18 W ultra-slim flyback evaluation board implementing a high-power-factor, quasi-resonant offline LED driver using the HVLED001A primary-side regulation controller and STD8N80K5 800 V/8 A MOSFET. It delivers 56 V ±5% output at >92% full-load efficiency, achieves <10% THD and >0.95 power factor across 90–264 V_AC, and targets isolated bus supplies for LED string drivers.

For engineers reviewing the STEVAL-ILL076V2 datasheet, STEVAL-ILL076V2 pinout, STEVAL-ILL076V2 application, or STEVAL-ILL076V2 equivalent, this board provides validated design reference for slim-profile, high-efficiency, EN55022(B)-precompliant AC-DC conversion with integrated short-circuit protection, no-optocoupler voltage regulation, and EN60950-compliant isolation.

Technical Context

The board implements a single-stage, high-PF quasi-resonant flyback topology with primary-side regulation (PSR), eliminating optocouplers and secondary-side feedback components. The HVLED001A controller enables precise output voltage regulation (<±5%) across line (90–264 V_AC) and load variations via internal demagnetization sensing and adaptive ZCD detection.

Magnetic design uses a custom 590 µH, 95 kHz transformer (T1, 2294.0005) enabling 18 mm profile; safety isolation meets 4 kV reinforced insulation requirements per EN60950, with creepage/clearance verified on FR4 PCB. EMI filtering includes X2/Y1/Y2 capacitors and MOV (V1) for input surge suppression.

Key Specifications

Availability

STEVAL-ILL076V2 is available at Aetrix Electronics and suitable for LED lighting system development, industrial AC-DC reference design validation, and high-isolation auxiliary supply prototyping requiring stable component supply and documented regulatory performance.

Supply support for STEVAL-ILL076V2 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, designing and manufacturing microcontrollers, power ICs, analog chips, and silicon carbide solutions for automotive, industrial, and consumer applications.

This board belongs to ST's STEVAL (ST Evaluation) series-engineered to accelerate time-to-market by delivering fully tested, application-specific reference designs with complete schematics, BOMs, layout files, and compliance documentation.

FAQ

What is the maximum output current supported by STEVAL-ILL076V2?

The board delivers 56 V ±5% at up to 321 mA (18 W) under wide-input conditions and up to 714 mA (40 W) at 230 V_AC. Current limit is set by transformer design and HVLED001A overcurrent protection threshold, not adjustable externally.

Does STEVAL-ILL076V2 support dimming or analog/PWM control?

No-this board implements fixed-output, constant-voltage operation only. The HVLED001A controller lacks dedicated dimming interface pins; no circuitry for 0–10 V, PWM, or DALI integration is present on the PCB.

Can the output voltage be adjusted to 48 V or 72 V?

No-the output is hardware-configured via transformer turns ratio and HVLED001A internal reference; changing output requires redesigning T1, recalibrating R-sense network, and revalidating safety isolation and EMI-no jumper or resistor option exists.

Is thermal performance data available for continuous operation at 40 W?

Yes-the board achieves 40 W only at 230 V_AC with measured case temperature <75°C on 2-layer FR4 at 25°C ambient. At 90 V_AC, output is limited to 18 W to maintain MOSFET and transformer thermal safety margins.