STMicroelectronics EVL6563-ZRC200W

Overview

EVL6563-ZRC200W from STMicroelectronics is an evaluation board for the L6563 advanced transition-mode (TM) PFC controller IC, designed to demonstrate high-efficiency, EN61000-3-2-compliant boost pre-regulator operation above 350W. It implements precise 1.5% internal voltage reference regulation, 1/V² voltage feedforward, tracking boost, and latched overvoltage protection - enabling low-THD AC-DC conversion in desktop/server power supplies.

For engineers reviewing the EVL6563-ZRC200W datasheet, EVL6563-ZRC200W pinout, EVL6563-ZRC200W application, or EVL6563-ZRC200W equivalent, this board provides validated reference design implementation of L6563-based active PFC with inductor saturation detection, remote ON/OFF control, and PWM interface signaling for cascaded DC-DC stages.

Technical Context

The EVL6563-ZRC200W implements a fixed-off-time transition-mode PFC architecture using the L6563 IC, which integrates a highly linear multiplier, zero-current detector (ZCD), and totem-pole gate driver (±600/800 mA). Its 1/V² feedforward loop compensates gain variation across universal AC input (90–264 VAC), while the tracking boost function dynamically adjusts output voltage proportional to RMS line voltage.

It supports dual-protection latching: overvoltage shutdown via PFC_OK pin (2.5 V threshold) and inductor saturation detection via CS pin (1.7 V latch level, L6563-specific). The board includes full interface signals (PWM_LATCH, PWM_STOP, RUN) for coordinated control with downstream PWM controllers in IEC61000-3-2-compliant >350W SMPS designs.

Key Specifications

Availability

EVL6563-ZRC200W is available at Aetrix Electronics and suitable for high-end AC-DC adapter development, server PSU validation, and IEC61000-3-2 compliance testing requiring stable component supply and proven reference design fidelity.

Supply support for EVL6563-ZRC200W 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, and automotive ICs, with deep expertise in energy-efficient power conversion solutions.

The EVL6563-ZRC200W belongs to ST's PFC evaluation platform family, engineered to accelerate adoption of transition-mode PFC controllers in high-power, low-THD AC-DC systems targeting Energy Star and Blue Angel certification.

FAQ

What is the primary purpose of the EVL6563-ZRC200W evaluation board?

The EVL6563-ZRC200W is a fully assembled, tested reference design board demonstrating the L6563 transition-mode PFC controller in a 200W boost pre-regulator configuration. It validates key features including 1/V² feedforward, tracking boost, latched OVP, and inductor saturation detection - providing engineers with a ready-to-use platform for system integration and compliance testing.

Does this board support both L6563 and L6563A IC variants?

No - the EVL6563-ZRC200W is specifically configured for the L6563, not the L6563A. It leverages the L6563-exclusive inductor saturation detection (CS pin latch at 1.7 V) and associated protection logic. The L6563A omits this function, making it incompatible with the board's saturation-triggered safety architecture and fault signaling path.

Can the EVL6563-ZRC200W be used to evaluate light-load efficiency optimization?

Yes - the board implements the RUN pin interface for remote ON/OFF control and supports light-load PFC disable via PWM_STOP signaling, directly enabling compliance testing with Energy Star, Blue Angel, and Energy2000 standards. The RUN pin's 0.52 V disable threshold and 0.6 V enable threshold allow precise brownout and standby-state coordination with downstream converters.

What are the critical layout considerations reflected in this evaluation board?

The EVL6563-ZRC200W incorporates optimized high-current gate drive routing, Kelvin-sense connections for the current-sense resistor, isolated ZCD return path, and separate analog/digital ground planes - all validated to suppress noise coupling into the MULT, CS, and INV pins. These practices ensure stable zero-current detection, accurate THD performance, and robust OVP response under transient line conditions.