STMicroelectronics EVL6563S-200ZRC

Overview

EVL6563S-200ZRC from STMicroelectronics is a 200 W evaluation board demonstrating ripple-free input current operation in transition-mode PFC pre-regulators using the L6563S controller and a custom coupled inductor topology. It achieves near-zero AC line current ripple (<5% THD), operates across 85–265 Vac input, delivers 400 V DC output at up to 200 W, and complies with EN61000-3-2 Class C harmonic limits.

For engineers reviewing the EVL6563S-200ZRC datasheet, EVL6563S-200ZRC application, EVL6563S-200ZRC schematic, or EVL6563S-200ZRC design guide, this board serves as a validated reference for zero-ripple PFC implementation, EMI filter reduction, coupled inductor layout, and L6563S-based high-efficiency offline power factor correction.

Technical Context

The EVL6563S-200ZRC implements ripple-steering via a two-winding coupled inductor integrated into a boost-derived PFC stage, where the cancellation winding diverts AC ripple current back to the AC input port while the DC winding carries only steady-state current to the output capacitor. This eliminates differential-mode conducted EMI at the source.

It uses the L6563S transition-mode PFC controller with internal zero-current detection, 650 V startup capability, and adjustable frequency foldback. The board's magnetic design targets k ≈ 0.7–0.8 and n_e ≈ 1.3–1.4 to satisfy the k·n_e = 1 condition for zero-ripple secondary (DC) current under 115/230 Vac inputs.

Key Specifications

Availability

EVL6563S-200ZRC is available at Aetrix Electronics and suitable for industrial power supplies, LED drivers, and medical AC/DC adapters requiring stable component supply, low-EMI certification support, and PFC validation infrastructure.

Supply support for EVL6563S-200ZRC 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 specializing in power management, analog, microcontrollers, and automotive ICs, with manufacturing and R&D centers across Europe, Asia, and the Americas.

This board belongs to ST's "Evaluation Boards for Power Management" product line, designed to accelerate development of energy-efficient, standards-compliant AC/DC conversion systems using ST's proprietary PFC and PWM controllers.

FAQ

What is the primary function of the EVL6563S-200ZRC evaluation board?

The EVL6563S-200ZRC is a fully assembled, tested demonstration board that validates the ripple-steering technique for achieving near-zero input current ripple in transition-mode PFC circuits. It integrates the L6563S controller, custom coupled inductor, MOSFET, diode, and feedback network to deliver 400 V DC at 200 W with <5% THD and EN61000-3-2 compliance.

Can the EVL6563S-200ZRC be used as a production-ready PFC module?

No - it is an evaluation board intended for lab validation, design reference, and educational use. It lacks conformal coating, safety certifications (e.g., UL/IEC 62368), and production-grade thermal management. Component placement, layout, and magnetics are optimized for measurement and analysis, not long-term field reliability or regulatory approval.

Does the board include schematics and layout files?

Yes - ST provides full design documentation including schematic (PDF), PCB layout (Gerber), bill of materials (BOM), and application note AN3180 (Doc ID 17273), which details theory, component selection, coupled inductor construction, and measured performance data across input voltages and load conditions.

How does the coupled inductor on this board differ from a standard boost inductor?

It is a two-winding, high-leakage coupled inductor wound on a single core with precisely controlled turn ratio (n_e ≈ 1.35) and coupling coefficient (k ≈ 0.75). Unlike a standard boost inductor, it enables active ripple cancellation: the AC winding returns ripple current to the AC input, while the DC winding delivers pure DC to the output, reducing EMI filter size by >50% compared to conventional designs.