STMicroelectronics STEVAL-ILL070V1

Overview

STEVAL-ILL070V1 from STMicroelectronics is an evaluation board for a 35 W, 0–10 V/PWM-dimmable single-string LED driver based on the HVLED001 quasi-resonant flyback controller. It delivers 700 mA output current across 0–48 V LED string voltage, supports universal AC input (90–305 V_rms, 45–66 Hz), achieves >90% efficiency at full load, and includes auxiliary 12 V/10 mA supply for dimming circuitry - used in commercial LED troffer and panel lighting systems.

For engineers reviewing the STEVAL-ILL070V1 datasheet, STEVAL-ILL070V1 pinout, STEVAL-ILL070V1 application, or STEVAL-ILL070V1 equivalent, key selection considerations include its integrated HVLED001-based QR flyback topology, dual 0–10 V and PWM dimming interfaces, open-load voltage limiting, auto-restart protection, and RoHS-compliant board-level implementation for Class I/II lighting designs.

Technical Context

The board implements a quasi-resonant flyback topology using the HVLED001 controller to regulate constant LED current with valley-switching control, enabling high efficiency and low EMI. Input rectification, bulk capacitance, and transformer design support universal AC operation while maintaining >0.9 power factor and THD < 20%.

Dimming is implemented via two isolated paths: a 0–10 V analog interface on the SELV side with potentiometer support, and a logic-level PWM input compatible with microcontrollers. Protection features include overvoltage, undervoltage, open-load, and overload detection with auto-restart behavior.

Key Specifications

Availability

STEVAL-ILL070V1 is available at Aetrix Electronics and suitable for LED troffer development, architectural downlight prototyping, and industrial panel lighting qualification requiring stable component supply and validated reference design access.

Supply support for STEVAL-ILL070V1 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, sensors, and analog/mixed-signal devices for industrial, automotive, and consumer applications.

The STEVAL series comprises ST's official evaluation platforms - engineered to accelerate validation of ST's LED drivers, power converters, and interface ICs in real-world lighting and power systems.

FAQ

Is STEVAL-ILL070V1 a standalone LED driver IC or an evaluation board?

STEVAL-ILL070V1 is a complete evaluation board - not an IC. It integrates the HVLED001 quasi-resonant flyback controller, transformer, MOSFET, rectifier, feedback network, and dual dimming interface circuitry on a single PCB. It requires no additional components to operate as a functional 35 W LED driver prototype.

Can STEVAL-ILL070V1 drive multiple LED strings in parallel?

No - it is designed exclusively for single-string constant-current operation up to 700 mA. Parallel string driving is unsupported due to lack of per-string current sensing and balancing; doing so risks uneven current distribution and premature LED failure.

What safety certifications does STEVAL-ILL070V1 meet?

The board implements reinforced isolation between primary and SELV sides per IEC 61347-2-13, includes creepage/clearance compliant layout, and supports end-product compliance with UL 1310 Class 2, EN 61347-1, and EN 61000-3-2 (Class C). Certification documentation is provided in ST's design files.

Does STEVAL-ILL070V1 support DALI or DMX dimming?

No - it only supports 0–10 V analog and logic-level PWM dimming. DALI or DMX require external protocol translators (e.g., DALI-to-PWM bridge ICs) since the board lacks dedicated transceivers, UART peripherals, or firmware for digital lighting protocols.