STMicroelectronics EVL130W-STRLIG

Overview

EVL130W-STRLIG from STMicroelectronics is a 130 W evaluation board (STEVAL-ILL053V1) for LED street lighting power supplies, implementing a two-stage architecture with PFC (L6562AT) and LLC resonant converter (L6599AT), delivering 48 V at 2.7 A with >90% efficiency across 85–305 VAC input, electrolytic-capacitor-free design using EPCOS film capacitors, and full protection suite including auto-restart overvoltage, short-circuit, and open-loop fault handling.

For engineers reviewing the EVL130W-STRLIG datasheet, EVL130W-STRLIG pinout, EVL130W-STRLIG application, or EVL130W-STRLIG equivalent, this page provides verified technical context on its dual-controller topology, film-capacitor reliability strategy, EN61000-3-2 Class-C harmonic compliance, thermal management via minimal heatsink, and functional validation across 25–100% load and 100–230 VAC mains ranges.

Technical Context

The board implements a transition-mode PFC stage using L6562AT to generate a regulated 450 V bus, feeding an LLC half-bridge resonant converter controlled by L6599AT operating at fixed 50% duty cycle and variable frequency (≈100–130 kHz). Startup sequencing enforces PFC-first activation, with L6599AT's LINE pin monitoring PFC output voltage (turn-on at ~430 V, turn-off at ~330 V) to prevent capacitive-mode operation.

Output regulation uses TS2431AILT-based optocoupled feedback modulating L6599AT's RFMIN pin to control switching frequency between ≈70 kHz (R42-set minimum) and ≈130 kHz (R43-set maximum); current-loop capability is optionally enabled via component substitution (R30/R31 → 0.033 Ω/0.039 Ω shunts, U4 SEA05TR added) for constant-current LED driving down to 30 V output.

Key Specifications

Availability

EVL130W-STRLIG is available at Aetrix Electronics and suitable for LED street lighting, industrial outdoor signage, high-reliability municipal lighting infrastructure, and smart city lighting systems requiring stable component supply, long-lifetime power conversion, and global AC mains compatibility.

Supply support for EVL130W-STRLIG 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 chips, and sensors for automotive, industrial, and consumer applications.

This evaluation board belongs to ST's STEVAL (ST Evaluation) platform, specifically targeting high-efficiency, long-life AC-DC LED driver reference designs for outdoor lighting where reliability, regulatory compliance, and maintenance-free operation are critical.

FAQ

Is EVL130W-STRLIG a production-ready power supply or strictly for evaluation?

EVL130W-STRLIG is an evaluation board (STEVAL-ILL053V1), not a certified end-product. It provides a fully validated, tested reference design for LED street lighting power supplies - intended for design-in assessment, performance benchmarking, and derivative development. Final products require safety certification (e.g., EN60950), enclosure integration, and system-level EMI validation.

Does the board support constant-current LED driving?

Yes - the base configuration regulates constant voltage (48 V), but the schematic includes documented modifications to enable constant-current mode: replace R30/R31 with 0.033 Ω/0.039 Ω shunts, add U4 (SEA05TR), and populate associated components (C36, C37, R51, etc.). This achieves stable 2.7 A output down to ≈30 V, suitable for multi-string LED arrays with linear current regulators.

What is the role of the L6599AT's DELAY pin (#2) in protection behavior?

The DELAY pin controls the soft-start and fault recovery timing. During overcurrent, an internal 150 µA current charges C21; at 2 V the IC forces maximum switching frequency to limit energy, and at 3.5 V it latches off. The pin discharges through its external resistor to GND; when voltage drops below 0.3 V, automatic soft-restart occurs - enabling safe, low-power intermittent operation during sustained short circuits.

How does the board achieve electrolytic-capacitor-free operation?

It replaces all high-voltage and output bulk capacitors with EPCOS film types: 5 µF/800 V (C5/C6/C7) for PFC output staging, and 4.7 µF/63 V (C22/C26) for LLC output filtering. Film capacitors offer >100,000-hour lifetime at rated conditions versus typical 2,000–10,000 hours for electrolytics, directly addressing MTBF limitations in outdoor lighting deployments.