STMicroelectronics EVAL6562-80W

Overview

EVAL6562-80W from STMicroelectronics is an evaluation board for the L6562 transition-mode PFC controller, designed as an 80W universal-input (85–265 VAC) pre-regulator with boost topology. It implements active power factor correction using a current-mode TM controller, achieves >93% peak efficiency at 230 VAC, maintains PF >0.97 across full load range, and supports wide-range mains operation.

For engineers reviewing the EVAL6562-80W datasheet, EVAL6562-80W schematic, EVAL6562-80W PCB layout, or EVAL6562-80W application notes, this board enables rapid validation of L6562-based PFC stages in AC/DC front-end designs requiring high PF, low THD, and compact size in industrial power supplies, LED drivers, and auxiliary SMPS.

Technical Context

The board implements a continuous conduction mode (CCM)-capable transition-mode boost PFC stage centered on the L6562 IC, which senses inductor current via a sense resistor and regulates output voltage through average current control. It uses a custom E2543/E ferrite core (3C85 material, 1.5 mm gap) to achieve 0.7 mH primary inductance with 105-turn primary winding.

Input rectification employs DF06M bridge and 4A/250V fuse; output filtering uses 47 µF/450 V electrolytic capacitor; MOSFET Q1 is STP8NM50 (8 A, 500 V, TO-220); diode D1 is STTH1L06 (1 A, 600 V ultrafast recovery). Efficiency and PF curves are measured per Figure 3 and Figure 4 of the data brief.

Key Specifications

Availability

EVAL6562-80W is available at Aetrix Electronics and suitable for industrial power supplies, LED driver front-ends, and auxiliary SMPS requiring stable component supply, design validation support, and reference implementation fidelity.

Supply support for EVAL6562-80W 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, analog ICs, power devices, and silicon solutions for automotive, industrial, and consumer markets.

This evaluation board belongs to ST's Power Management Evaluation Kit product line, developed to accelerate adoption of their PFC controllers by providing fully tested, documented, and characterized reference designs for real-world AC/DC front-end applications.

FAQ

What is the primary function of the EVAL6562-80W evaluation board?

The EVAL6562-80W is a complete, assembled evaluation platform for the L6562 transition-mode PFC controller. Its purpose is to demonstrate and validate high-efficiency, high-power-factor AC/DC front-end designs using boost topology, with all critical components-including transformer, MOSFET, diode, and feedback network-pre-selected and layout-optimized per ST's reference design.

Can the EVAL6562-80W be used with input voltages outside 85–265 VAC?

No. The board is specifically designed and tested for universal AC input (85–265 VAC) only. Operation below 85 VAC risks insufficient hold-up time and unstable PFC regulation; above 265 VAC exceeds the 450 V-rated output capacitor and may damage the STP8NM50 MOSFET or STTH1L06 diode due to overvoltage stress during transients.

Does the board include protection features such as overvoltage or overtemperature?

The board implements basic overvoltage protection via the L6562's internal OVP pin (R13 = 9.53 kΩ sets ~430 V threshold) and fuse-based overcurrent protection (4 A/250 V). It does not include dedicated overtemperature sensing or shutdown circuitry; thermal management relies on heatsinking of Q1 and BRIDGE, verified for 80 W operation at 40°C ambient per the data brief.

Is the EVAL6562-80W still in production or supported by ST?

ST has marked EVAL6562-80W as obsolete per its November 2006 data brief. While no longer manufactured, it remains technically valid for legacy design validation and educational use. Aetrix Electronics provides remaining stock with full traceability and technical documentation, but recommends newer ST PFC evaluation platforms (e.g., STEVAL-ILL001V1) for new designs requiring long-term supply assurance.