STMicroelectronics EVL130W-SL-EU

Overview

EVL130W-SL-EU from STMicroelectronics is a 130 W demonstration board for LED street lighting power supplies, implementing a two-stage architecture with active PFC (L6562AT) and LLC resonant DC-DC conversion (L6599AT), delivering 48 V at 2.7 A with >93.8% peak efficiency, EN61000-3-2 Class-C compliance, and zero electrolytic capacitors for extended MTBF in outdoor deployments.

For engineers reviewing the EVL130W-SL-EU datasheet, EVL130W-SL-EU application, EVL130W-SL-EU functional block diagram, or EVL130W-SL-EU bill of materials, this page provides verified design context, measured performance data, protection behavior, thermal characteristics, and supply chain support for industrial LED driver development.

Technical Context

The board implements a transition-mode boost PFC stage regulating to 450 VDC, followed by a fixed 50% duty-cycle, variable-frequency LLC half-bridge operating with integrated magnetic transformer (MAGNETICA 1860.0013), enabling zero-voltage switching across load range. The L6562AT senses mains voltage via resistor divider (R7/R12/R14/R22) and peak current via R34 to maintain sinusoidal input current.

Output regulation uses TS2431AILT-based optocoupled feedback modulating L6599AT's RFMIN pin (#4), setting frequency range from ~70 kHz (R42) to ~130 kHz (R43). Protection includes auto-restart overcurrent (ISEN pin #6), open-loop latch-off (DIS pin #8), and PFC output overvoltage detection with coordinated shutdown via PFC_STOP pin (#9).

Key Specifications

Availability

EVL130W-SL-EU is available at Aetrix Electronics and suitable for LED streetlight driver development, industrial outdoor power supply qualification, and EN61000-3-2 Class-C compliance validation requiring stable component supply and documented reference design traceability.

Supply support for EVL130W-SL-EU 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, specializing in power management, analog ICs, microcontrollers, and automotive-grade solutions with ISO 9001-certified manufacturing.

This board belongs to ST's LED Lighting Reference Design portfolio, engineered specifically for high-reliability, maintenance-free outdoor lighting systems where lifetime, efficiency, and regulatory compliance are non-negotiable design constraints.

FAQ

What is the primary purpose of the EVL130W-SL-EU board?

The EVL130W-SL-EU is a fully assembled, tested demonstration board intended for evaluating and accelerating development of 48 V LED street lighting drivers. It validates ST's two-chip PFC + LLC architecture (L6562AT + L6599AT), delivers measured 93.85% efficiency, meets EN61000-3-2 Class-C harmonics limits, and demonstrates film-capacitor-only reliability for outdoor deployment.

Does the board support constant-current (CC) LED operation?

Yes - the base design provides constant-voltage (CV) output, but Section 1.4 of AN3105 documents a validated hardware modification to add current-loop control: replacing R30/R31 with 0.033 Ω / 0.039 Ω shunts, populating U4 (SEA05TR), and adding specified passive components enables stable 2.7 A constant current down to ~30 V output, ideal for driving LED strings with linear current regulators.

How does the board handle overvoltage or open-loop faults?

It implements dual-stage protection: the L6599AT monitors auxiliary winding voltage via Zener D17; if loop failure occurs, DIS pin (#8) latches off both the LLC stage and the PFC stage via PFC_STOP pin (#9) connected to L6562AT INV pin (#1). Operation remains latched until VCC capacitors discharge, then auto-restarts - ensuring fail-safe behavior without manual reset.

Can the board operate without heatsinks under full load?

Yes - thermal maps (Figures 13–14 in AN3105) confirm maximum PCB top-side temperature of 72 °C and bottom-side of 68 °C at 230 VAC/130 W, well within safe operating limits for FR-4 substrate and SMT power components. No heatsinks are required due to high efficiency (>93%), film capacitor thermal stability, and conservative component derating per MIL-HDBK-217D.