STMicroelectronics STEVAL-ILL069V2

Overview

STEVAL-ILL069V2 from STMicroelectronics is a 35 W wide-input-range flyback evaluation board featuring the HVLED001A quasi-resonant controller and STF10N80K5 high-voltage MOSFET, delivering 48 V / 730 mA with 90% full-load efficiency, 90–305 V_AC input range, and EN60065 safety compliance for LED driver auxiliary power supply applications.

For engineers reviewing the STEVAL-ILL069V2 datasheet, STEVAL-ILL069V2 pinout, STEVAL-ILL069V2 application, or STEVAL-ILL069V2 equivalent, this board provides validated reference design data for high-PF, low-THD AC/DC conversion in lighting systems requiring stable 48 V isolated bus and 16 V auxiliary output under wide-line conditions.

Technical Context

The board implements a quasi-resonant flyback topology using HVLED001A's ZCD-based valley switching and frequency fold-back to maintain high efficiency (>90%) from 10% to 100% load while reducing output ripple at light load. Input surge handling and brown-out protection are integrated via HVLED001A's HVSU and TOFF pins.

Isolation is achieved through transformer T1 (750315710) with reinforced insulation; secondary-side regulation uses optocoupler feedback to FB pin, while CS and GD pins drive the STF10N80K5 MOSFET directly. Short-circuit protection triggers auto-restart mode without latch-off.

Key Specifications

Availability

STEVAL-ILL069V2 is available at Aetrix Electronics and suitable for LED driver auxiliary power supply, industrial lighting control, smart luminaire embedded power, and isolated gate driver biasing requiring stable component supply and pre-validated safety-compliant design.

Supply support for STEVAL-ILL069V2 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 devices, and MEMS sensors for automotive, industrial, and consumer markets.

This board belongs to ST's STEVAL lighting evaluation platform family, developed to accelerate adoption of high-efficiency, safety-certified AC/DC topologies for solid-state lighting and intelligent illumination systems.

FAQ

What is the maximum output power of STEVAL-ILL069V2?

The board delivers 35 W continuously at 48 V / 730 mA under nominal line conditions. It supports up to 50 W peak output when input voltage is within 198–265 V_AC, as specified in the revision history table of DocID029592 Rev 1.

Does STEVAL-ILL069V2 include isolation between primary and secondary sides?

Yes - it uses transformer T1 (750315710) with reinforced insulation and optocoupler-based feedback, achieving galvanic isolation compliant with EN60065, including minimum creepage and clearance distances verified on the 130 mm × 50 mm single-sided PCB.

Can the auxiliary 16 V output be used to power external logic circuits?

Yes - the auxiliary output supplies up to 20 mA at 16 V, intended for biasing small circuits such as microcontroller peripherals or optocoupler LEDs; its regulation depends on main output loading and is not independently stabilized.

What protections are implemented on STEVAL-ILL069V2?

Protections include short-circuit and overload auto-restart, overvoltage shutdown via ZCD monitoring, brown-out detection, and surge/burst overvoltage handling via HVLED001A's HVSU pin - all confirmed in the schematic and functional description of DocID029592 Rev 1.