STMicroelectronics EVL6564H-100W

Overview

EVL6564H-100W from STMicroelectronics is a 100 W transition-mode power factor correction (PFC) pre-regulator demonstration board based on the L6564H controller IC, designed for wide-input AC-DC front-end applications requiring EN61000-3-2 or JEITA-MITI compliance. It delivers regulated 400 V DC output from 90–265 Vac input, achieves ≥92% efficiency at 90 Vac/100 W, and provides 10 ms hold-up time with 300 V minimum post-hold voltage.

For engineers reviewing the EVL6564H-100W datasheet, EVL6564H-100W application circuit, EVL6564H-100W evaluation board layout, or EVL6564H-100W design reference, this board serves as a validated hardware platform to accelerate development of PFC stages in LED ballasts, flat-panel displays, and industrial SMPS where harmonic reduction and high-efficiency pre-regulation are critical.

Technical Context

The EVL6564H-100W implements a continuous-conduction transition-mode (TM) PFC topology using the L6564H current-mode controller with integrated high-voltage startup. It operates across 47–63 Hz line frequency and maintains regulated 400 V ±5% output under full 100 W load with ≤20 V_pk-pk 2f_L ripple.

Input rectification uses GBU4J bridge and HF2826-203Y1R5-T01 boost inductor; output filtering employs 47 µF/450 V and 4.7 nF parallel capacitors. The board supports thermal operation up to 50 °C ambient and includes NTC inrush limiting (2.5 Ω), fuse protection (4 A), and heatsink-mounted STF8NM50N MOSFET.

Key Specifications

Availability

EVL6564H-100W is available at Aetrix Electronics and suitable for LED ballast designs, flat-panel TV power supplies, industrial AC-DC adapters, and medical-grade SMPS requiring stable component supply and regulatory-compliant PFC validation.

Supply support for EVL6564H-100W 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 management devices, and discrete components for industrial, automotive, and consumer markets.

The EVL6564H-100W belongs to ST's Power Management Evaluation Board portfolio, developed specifically to demonstrate high-efficiency, standards-compliant PFC solutions for lighting, display, and industrial power supply designers.

FAQ

What is the primary function of the EVL6564H-100W board?

The EVL6564H-100W is a fully assembled, tested demonstration board that implements a 100 W transition-mode PFC pre-regulator. Its core function is to correct input current waveform distortion and deliver a stable 400 V DC bus from universal AC input, enabling downstream DC-DC conversion while meeting IEC61000-3-2 harmonic limits.

Can the EVL6564H-100W be used directly in end-product designs?

No - it is an evaluation board intended for design verification, reference schematics, and layout guidance. While functionally complete, its single-sided PCB, non-optimized thermal layout, and lack of full safety certification (e.g., reinforced isolation, creepage/clearance validation) preclude direct end-product integration without redesign and qualification.

Which controller IC is used on this board?

The board uses the STMicroelectronics L6564H - a current-mode transition-mode PFC controller with integrated high-voltage startup (HVS) pin, zero-current detection (ZCD), and multi-function protection features including overvoltage, overcurrent, and brownout lockout.

Does the board include EMI filtering or safety isolation?

No - the EVL6564H-100W implements only the active PFC stage and basic input rectification. It lacks Y-capacitors, common-mode chokes, or reinforced isolation barriers. System-level EMI filtering and safety isolation must be added externally in final product designs per IEC61000-6-3 and IEC62368-1 requirements.