STMicroelectronics EVL6563S-100W

Overview

EVL6563S-100W from STMicroelectronics is a 100 W transition-mode (TM) power factor correction (PFC) demonstration board built around the L6563S controller IC, implementing a wide-input (90–265 V_AC) boost pre-regulator with regulated 400 V_DC output, 92% minimum efficiency, and compliance to EN61000-3-2 Class-D and JEITA-MITI Class-D standards for ballasts, flat-panel displays, and AC/DC adapters.

For engineers reviewing the EVL6563S-100W datasheet, EVL6563S-100W pinout, EVL6563S-100W application, or EVL6563S-100W equivalent, this board delivers validated PFC reference design data-including THD <2.3%, PF >0.98, startup at 80 V_AC, and brownout protection-enabling rapid evaluation of TM PFC implementation in industrial and consumer SMPS.

Technical Context

The EVL6563S-100W implements a current-mode, transition-mode boost PFC stage using the L6563S SO-14 controller, featuring internal high-voltage startup, voltage feed-forward (VFF), ZCD-based zero-current detection, and dynamic OVP via the PFC_OK pin. It operates across 47–63 Hz line frequency with minimum 40 kHz switching frequency.

Key circuit elements include a 0.52 mH PFC inductor (TDK SRW2620PQ-X22V102), STF7NM50N MOSFET in TO-220FP package, STTH2L06 ultrafast rectifier, and a full-input EMI filter with 20 mH common-mode choke. The board supports remote on/off control, cascaded PWM controller interfacing, and hold-up time of 10 ms down to 300 V_DC.

Key Specifications

Availability

EVL6563S-100W is available at Aetrix Electronics and suitable for LED ballast development, flat-panel display power supplies, and universal-input AC/DC adapters requiring stable component supply, regulatory-compliant PFC validation, and fast-turnaround reference design integration.

Supply support for EVL6563S-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 analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The EVL6563S-100W belongs to ST's evaluation board portfolio for PFC controllers, specifically developed to accelerate design-in of transition-mode PFC stages in cost-sensitive, high-efficiency AC/DC power supplies targeting Class-D harmonic compliance.

FAQ

What is the primary function of the EVL6563S-100W board?

The EVL6563S-100W is a fully assembled, tested demonstration board that implements a 100 W transition-mode boost PFC pre-regulator using the L6563S controller. Its purpose is to validate PFC performance-including THD, PF, efficiency, and regulation-across 90–265 V_AC input, providing engineers with a ready-to-measure reference design for regulatory-compliant power supplies.

Does EVL6563S-100W include EMI filtering?

Yes, the board integrates a complete input EMI filter comprising a 20 mH common-mode choke (TDK HF2826-203Y1R5-T01) and two 470 nF X2 safety capacitors (Arcotronics R46-I). This filter was used during conducted EMI pre-compliance testing per EN55032 and enabled measured CE peak emissions to remain below Class-B limits at both 100 V_AC and 230 V_AC.

How does the brownout protection work on this board?

Brownout protection is implemented via the L6563S RUN pin (#10), biased from the VFF pin (#5) through resistors R27 and R32. When the VFF-derived voltage drops below 0.8 V, the IC shuts down non-latched; it automatically restarts when voltage rises above 0.88 V. This provides seamless recovery from AC undervoltage events without requiring a full power cycle.

Can EVL6563S-100W be used to drive a downstream PWM controller?

Yes, the board supports cascaded control via J3 connector pins PWM_LATCH and PWM_STOP, and directly through the PFC_OK pin (#7) routed to J3 pin #5 (ON/OFF). As documented in Section 4.7 of AN3065, these interfaces allow the L6563S to enable/disable an external PWM controller based on PFC OK status, feedback fault, or remote command-enabling synchronized start-up and fault shutdown.