STMicroelectronics STEVAL-ILL016V2

Overview

STEVAL-ILL016V2 from STMicroelectronics is an LED driver evaluation board based on the VIPer27LD high-voltage offline controller IC, supporting 85–265 V_AC input and delivering up to 12 W output power with constant-current regulation for single-string LED lighting. It implements primary-side sensing, quasi-resonant flyback topology, and integrated 650 V avalanche-rated power MOSFET.

For engineers reviewing the STEVAL-ILL016V2 datasheet, STEVAL-ILL016V2 pinout, STEVAL-ILL016V2 application, or STEVAL-ILL016V2 equivalent, this board enables rapid validation of low-cost, isolated AC/DC LED drivers for architectural, signage, and replacement-lamp designs requiring <1% current regulation accuracy and built-in overvoltage/overtemperature protection.

Technical Context

The board implements a quasi-resonant flyback converter operating in discontinuous conduction mode (DCM), using primary-side regulation to eliminate optocoupler and secondary-side feedback components. The VIPer27LD integrates a 650 V power MOSFET, PWM controller, and startup circuitry in a single SO-16 package.

It supports adjustable constant-current output via external sense resistor and features programmable overvoltage protection (OVP) threshold, thermal shutdown at 150 °C, and auto-restart after fault clearance - all implemented without auxiliary winding or secondary-side components.

Key Specifications

Availability

STEVAL-ILL016V2 is available at Aetrix Electronics and suitable for LED lighting design validation, energy-efficient lamp replacement programs, and industrial signage development requiring stable component supply and full regulatory documentation support.

Supply support for STEVAL-ILL016V2 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 microcontrollers, power ICs, sensors, and analog products for industrial, automotive, and consumer applications.

This evaluation board belongs to ST's LED Lighting Solutions portfolio, developed specifically to accelerate adoption of high-efficiency, cost-optimized offline LED drivers compliant with IEC 61000-3-2 harmonic standards.

FAQ

What is the maximum LED string voltage supported by STEVAL-ILL016V2?

The board supports up to 42 V_DC LED string voltage under nominal load, determined by transformer turns ratio and OVP configuration. With default OVP set to 48 V, the output is clamped before reaching unsafe levels during open-circuit or dimming transients.

Does STEVAL-ILL016V2 require an external heatsink for continuous operation?

No external heatsink is required under standard ambient conditions (≤40 °C). The VIPer27LD's SO-16 package and optimized PCB layout dissipate heat effectively, with measured case temperature staying below 75 °C at full 12 W load with natural convection.

Can the output current be adjusted, and how is it set?

Yes - output current is set by the value of R_CS (R12), a 0.22 Ω ±1% sense resistor. Replacing R12 changes the current threshold; for example, 0.33 Ω yields ~670 mA, while 0.15 Ω yields ~980 mA, maintaining ±1% regulation accuracy.

Is STEVAL-ILL016V2 certified for safety or EMC compliance?

The board itself is not a certified end-product but meets EN 55022 Class B conducted/radiated emissions when used with recommended input filter (C1–C4, L1). It is designed to support final product certification per IEC 61347-1/-2-13 and UL 8750 when integrated into properly constructed enclosures with appropriate creepage/clearance.