STMicroelectronics EVLONE140W

Overview

EVLONE140W from STMicroelectronics is a USB-PD 3.1 EPR reference design board implementing an Active Clamp Flyback (ACF) AC/DC converter delivering up to 140 W output power, supporting 5–28 Vdc output with 5 A maximum current, >94% efficiency at 230 Vac full load, and compliant with USB-PD 3.1 Extended Power Range (EPR) and Adjustable Voltage Supply (AVS) specifications.

For engineers reviewing the EVLONE140W datasheet, EVLONE140W pinout, EVLONE140W application, or EVLONE140W equivalent, this board serves as a production-ready evaluation platform for high-density USB-PD 3.1 EPR adapters targeting ultra-compact laptop chargers, multi-port desktop adapters, and programmable power supplies requiring precise AVS control and ZVS ACF topology validation.

Technical Context

The EVLONE140W implements a dual-stage architecture: front-end PFC using L6563S controller and rear-stage ZVS Active Clamp Flyback controlled by ST-ONEHP - a fully integrated digital controller embedding ARM Cortex-M0+, USB-PD 3.1 PHY, synchronous rectification, and galvanically isolated dual-channel communication between primary and secondary sides.

It leverages MasterGaN1 (600 V half-bridge GaN power stage) for high-frequency switching, enabling compact magnetics (215 µH ACF transformer, 250 µH PFC choke), and achieves 23.5 W/in³ power density in a 95 × 56 × 24 mm form factor while maintaining full USB-PD 3.1 SPR/EPR/AVS compliance including 28 V @ 5 A EPR and 15–28 V @ 5 A AVS with 100 mV steps.

Key Specifications

Availability

EVLONE140W is available at Aetrix Electronics and suitable for USB-PD 3.1 EPR adapter development, high-density AC/DC reference design validation, and programmable AVS power supply prototyping requiring stable component supply and documented topology implementation.

Supply support for EVLONE140W 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, Switzerland, designing and manufacturing microcontrollers, power ICs, analog devices, and digital controllers for industrial, automotive, and consumer applications.

EVLONE140W belongs to ST's ST-ONE family of digital USB-PD controllers - engineered specifically to enable ZVS Active Clamp Flyback topologies for ultra-compact, high-efficiency USB-PD 3.1 EPR chargers and adapters.

FAQ

What is the primary function of the EVLONE140W board?

The EVLONE140W is a complete, tested reference design board-not a component-for evaluating and developing USB-PD 3.1 EPR-compliant AC/DC adapters. It integrates ST-ONEHP digital controller, L6563S PFC controller, MasterGaN1 GaN power stage, and all supporting circuitry to deliver up to 140 W with AVS programmability and full protocol compliance.

Does EVLONE140W include firmware, and is it user-programmable?

Yes - the ST-ONEHP controller on EVLONE140W runs pre-certified USB-PD 3.1 firmware supporting SPR, EPR, and AVS modes. ST provides full source code, configuration tools (STSW-ONEHP-DK), and debug interfaces (SWD) enabling customization of voltage profiles, timing, protection thresholds, and USB descriptor parameters.

Can EVLONE140W be used for production, or is it evaluation-only?

EVLONE140W is a reference design intended for evaluation, design verification, and derivative product development. While its BOM uses industrial-grade components and meets safety standards (EN 62368-1), ST does not certify it as a finished end-product; users must perform their own regulatory testing and layout adaptation for volume manufacturing.

Which key ICs are mounted on the EVLONE140W main and daughter boards?

Main board hosts ST-ONEHP (U1), L6563S (U3), LDO40LPURY (U2), TS321ILT (U4), MasterGaN1 (MG1), and STL36N60M6 (Q10). Daughter board contains LM293D (U5), two STL36N60M6 (Q21/Q22), and bridge rectifier Z4DGP408L-HF (D25), forming the active bridge section for input rectification and gate drive staging.