STMicroelectronics EVLHVLED007W35F

Overview

EVLHVLED007W35F from STMicroelectronics is an evaluation board for the HVLED007 transition-mode flyback controller, delivering a stable 48 V / 730 mA isolated DC bus and auxiliary 12 V / 15 mA output for LED current generators in solid-state lighting systems. It supports universal AC input (90–265 V, 45–66 Hz), achieves >89% efficiency at full load, meets EN61000-3-2 Class-C harmonics, and delivers PF >0.99 / THD <3% at 100 VAC full load.

For engineers reviewing the EVLHVLED007W35F datasheet, EVLHVLED007W35F pinout, EVLHVLED007W35F application, or EVLHVLED007W35F equivalent, this board enables rapid validation of high-power-factor, low-THD LED driver designs using ST's patented quasi-resonant control architecture with fast startup and auto-restart protection.

Technical Context

The board implements a transition-mode (quasi-resonant) flyback topology using the HVLED007 SO-8 controller, which senses primary-side current and zero-crossing to regulate output voltage without optocoupler feedback. Its control loop embeds ST's proprietary THD-reduction algorithm that dynamically adjusts switching frequency and conduction timing across line and load conditions.

Input rectification uses a 2A/800V KBPM bridge (BR1); power stage employs an 800V/6A N-MOSFET (Q1, STF7N80K5); and isolation is achieved via a custom 35W flyback transformer (T1, MAGNETICA). The auxiliary 12 V rail is derived from a separate winding and regulated by a TL431 shunt reference (U3).

Key Specifications

Availability

EVLHVLED007W35F is available at Aetrix Electronics and suitable for LED street lighting, industrial high-bay luminaires, and architectural accent lighting requiring stable component supply, design validation support, and regulatory-compliant reference implementations.

Supply support for EVLHVLED007W35F 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, analog devices, and silicon solutions for automotive, industrial, and consumer applications.

The EVLHVLED007W35F belongs to ST's LED driver evaluation platform family, engineered specifically to accelerate development of high-efficiency, high-power-factor AC/DC LED drivers compliant with international lighting standards.

FAQ

Is EVLHVLED007W35F a standalone LED driver or a development tool?

EVLHVLED007W35F is a fully assembled evaluation board-not a production-ready module. It integrates the HVLED007 controller, power MOSFET, transformer, and passive components to demonstrate a complete 35W flyback LED driver design. Users must add external LED loads and may modify feedback networks for specific output configurations.

Does this board support dimming functionality?

No, EVLHVLED007W35F does not include native dimming circuitry. It provides fixed-output regulation only. To implement analog or PWM dimming, users must add external circuitry-such as a current-sense resistor network or optocoupled feedback modulation-per the HVLED007 datasheet guidelines for DIM pin interfacing.

What safety certifications does EVLHVLED007W35F meet?

The board complies with EN61000-3-2 Class-C (harmonics), EN55022 Class-B (EMI), and RoHS. It is not certified to UL/IEC 62368-1 or IEC 61347 as a finished luminaire component. Engineers must perform full system-level safety testing when integrating this board into end products.

Can the auxiliary 12 V output power external logic circuits?

Yes-the 12 V auxiliary output supplies up to 15 mA and is intended for low-power control functions such as microcontroller biasing, sensor powering, or communication IC operation. It is not rated for continuous loads exceeding 15 mA; sustained overcurrent may affect main output regulation stability or cause thermal derating.