STMicroelectronics EVL185W-LEDTV

Overview

EVL185W-LEDTV from STMicroelectronics is a high-efficiency 185 W LED TV power supply evaluation board featuring a three-stage architecture: VIPer27L-based 5 V/2 A standby supply, L6564-controlled PFC front-end, and L6599A-driven LLC resonant converter delivering 12 V/4 A (panel), 24 V/2 A (audio), and 130 V/620 mA (backlight). It achieves >90% full-load efficiency and <170 mW standby consumption at 230 Vac.

For engineers reviewing the EVL185W-LEDTV datasheet, EVL185W-LEDTV application, EVL185W-LEDTV design reference, or EVL185W-LEDTV alternative evaluation boards, this page provides verified topology details, measured efficiency curves, safety compliance status (EN60065), EMI performance (EN55022 Class-B), and ENERGY STAR® eligibility validation.

Technical Context

The board implements a hybrid architecture: the VIPer27L operates in quasi-resonant flyback mode for ultra-low standby power, while the L6564 drives a continuous-conduction-mode (CCM) boost PFC stage regulating to 400 V DC. This rail feeds both the L6599A-controlled LLC half-bridge resonant converter and the VIPer27L standby circuit.

Control coordination is achieved via an external logic signal referenced to secondary ground, enabling synchronized on/off sequencing of PFC and LLC stages. No synchronous rectification is used-efficiency relies on optimized resonant tank design, low-loss MOSFETs, and precise zero-voltage switching (ZVS) timing enforced by the L6599A's adaptive dead-time control.

Key Specifications

Availability

EVL185W-LEDTV is available at Aetrix Electronics and suitable for LED TV power design validation, ENERGY STAR® certification testing, and high-efficiency AC-DC reference implementation in consumer electronics, broadcast monitors, and professional display systems requiring stable component supply and documented thermal/mechanical layout.

Supply support for EVL185W-LEDTV 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 industrial, automotive, and consumer markets.

This board belongs to ST's Evaluation Board product line, developed to demonstrate high-efficiency, multi-rail AC-DC architectures targeting next-generation LED TVs and large-format displays with stringent energy regulation compliance.

FAQ

What is the primary purpose of the EVL185W-LEDTV evaluation board?

The EVL185W-LEDTV is a complete, tested reference design for an 185 W LED TV power supply. It demonstrates ST's three-chip solution (VIPer27L, L6564, L6599A) achieving >90% efficiency and sub-170 mW standby power. Engineers use it to validate topology performance, accelerate regulatory testing (EN61000-3-2, EN55022), and reduce time-to-certification for commercial LED TV designs.

Does the board include schematics, PCB layout files, and bill of materials?

Yes - the official STMicroelectronics documentation (Doc ID 018695) includes full schematic diagrams, single-sided PCB layout (CEM-1, 70 µm copper), component placement drawing, BOM with manufacturer part numbers and footprints, and test setup instructions. All files are provided in PDF format; Gerber or CAD source files are not included.

Can the EVL185W-LEDTV be modified for different output voltages or power levels?

Yes - the board is designed for evaluation and adaptation. Output voltages are set by feedback resistors (TL431-based for 12 V/24 V/130 V; internal reference for 5 V standby), and LLC resonant tank components (Lr, Cr, Lm) can be adjusted to tune gain and ZVS range. However, major changes require revalidation of safety isolation, EMI, and thermal performance per EN60065 and EN55022.

Is the EVL185W-LEDTV RoHS compliant and lead-free?

Yes - the board is fully RoHS compliant (2011/65/EU) and uses lead-free solder and components. The documentation explicitly states "RoHS compliant" on page 1, and all listed ICs (VIPer27L, L6564, L6599A) are qualified as RoHS-compliant and halogen-free per ST's product declarations.