STMicroelectronics STEVAL-ILL006V1

Overview

STEVAL-ILL006V1 from STMicroelectronics is an evaluation board based on the VIPer22A-E off-line constant-current LED driver IC, designed for high-brightness LED lighting systems operating directly from universal AC mains (90–264 VAC). It delivers selectable constant output currents of 350 mA, 700 mA, or 1.05 A to drive 2–8 series-connected LEDs, supporting 1 W, 3 W, and 5 W LED configurations with up to 10 W total output power.

For engineers reviewing the STEVAL-ILL006V1 datasheet, STEVAL-ILL006V1 schematic, STEVAL-ILL006V1 application notes, or STEVAL-ILL006V1 alternative evaluation boards, this reference design provides verified layout, component selection, EMI-compliant operation (EN55022 Class B), and configurable current scaling-critical for rapid prototyping of AC-input LED drivers in commercial and industrial lighting.

Technical Context

The board implements a flyback topology using the VIPer22A-E integrated primary-side controller with built-in 600 V avalanche-rated MOSFET and proprietary zero-power startup circuitry. It operates in quasi-resonant mode to improve efficiency and reduce EMI, with primary-side sensing eliminating the need for optocouplers or secondary-side feedback components.

Current regulation is achieved via adjustable sense-resistor networks (R12, R13, R14) and precision shunt reference U3 (TSM103), enabling three discrete output current levels without firmware or digital configuration. Input rectification uses DF06MGI bridge and bulk storage employs C1/C2 (4.7 µF + 10 µF, 400 V), while output filtering includes C7 (220 µF, 25 V) and C4 (22 µF, 50 V).

Key Specifications

Availability

STEVAL-ILL006V1 is available at Aetrix Electronics and suitable for LED streetlight prototypes, architectural accent lighting, and commercial downlight development requiring stable component supply, pre-validated safety compliance, and repeatable thermal performance under universal AC input.

Supply support for STEVAL-ILL006V1 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 power management, microcontrollers, analog ICs, and automotive-grade solutions.

This board belongs to ST's STEVAL (ST Evaluation) family, engineered to accelerate hardware validation and regulatory testing for AC-DC LED drivers targeting energy-efficient solid-state lighting applications.

FAQ

What is the maximum number of LEDs the STEVAL-ILL006V1 can drive?

The board supports 2 to 8 high-intensity LEDs connected in series, with total forward voltage up to approximately 32 V at 1.05 A. The actual count depends on individual LED V_F and thermal derating; for example, eight 3.2 V LEDs (25.6 V total) operate within safe margin at full current. Layout and heatsinking must be maintained per ST's reference design to avoid overtemperature shutdown.

Does the STEVAL-ILL006V1 require external programming or configuration?

No. Current level selection (350 mA / 700 mA / 1.05 A) is implemented via physical jumper positions (J2/J3) and corresponding sense resistors (R12/R13/R14); no firmware, USB interface, or digital communication is involved. All control logic resides in the VIPer22A-E IC, which operates autonomously after power-up with no user intervention required.

Is the STEVAL-ILL006V1 certified for safety standards such as UL or IEC 62368?

The board itself is not a certified end-product but is designed to meet key requirements of IEC 61347-2-13 (LED module controlgear) and EN55022 Class B EMI. It incorporates reinforced insulation, creepage/clearance compliant with 3 mm minimum spacing, and fuse F1 (J1) for overcurrent protection. Final system certification requires integration into an enclosure with proper thermal management and additional safety components per regional regulations.

Can the STEVAL-ILL006V1 be modified to support dimming functionality?

Yes-though not included in the base design, analog dimming can be added by injecting a DC voltage (0–2.5 V) into the FB pin of U4 (VIPer22A-E) via a resistor divider, modulating peak primary current. PWM dimming is also feasible by pulsing the VDD supply through a MOSFET switch, but both methods require careful validation of stability, EMI impact, and LED current ripple per ST Application Note AN2397 and VIPer22A-E datasheet Section 7.3.