STMicroelectronics EVLONE65W

Overview

EVLONE65W from STMicroelectronics is a 65 W USB Power Delivery 3.1.1.2–certified reference design board based on the ST-ONE digital controller and MasterGaN4 power stage, implementing a ZVS non-complementary active clamp flyback topology for high-power-density AC/DC conversion. It delivers five fixed PDOs (5–20 V) and two PPS APDOs (3.3–21 V), supports universal 90–265 Vac input, achieves >93% efficiency at full load, and integrates galvanically isolated dual-channel communication between primary and secondary sides.

For engineers reviewing the EVLONE65W datasheet, EVLONE65W pinout, EVLONE65W application, or EVLONE65W equivalent, this board serves as a production-ready evaluation platform for USB-PD 3.1 programmable power supply designs requiring compact form factor (58×32×20 mm), precise PPS voltage/current stepping (20 mV CV / 50 mA CC), and robust protection (OVP, OCP, OTP, UVP, brown-out).

Technical Context

The EVLONE65W implements a digitally controlled active clamp flyback converter using ST-ONE's embedded Arm® Cortex®-M0+ core, synchronous rectification, and integrated USB-PD PHY. Its control architecture enables zero-voltage switching (ZVS) operation at high frequency to minimize magnetic size and conduction losses.

Primary-side control includes HV startup, active clamp timing, and current sensing via ISEN; secondary-side management handles constant-voltage/constant-current regulation, PPS negotiation, and isolation-coupled feedback through dedicated SRGD, ORGD, and SPGND terminals. The MasterGaN4 half-bridge (31VFQFPN) provides fast-switching GaN power delivery with integrated gate drivers.

Key Specifications

Availability

EVLONE65W is available at Aetrix Electronics and suitable for USB-C PD 3.1 reference design validation, high-density AC/DC adapter development, and PPS-based fast-charging system prototyping requiring stable component supply and traceable sourcing.

Supply support for EVLONE65W 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 microcontrollers, analog ICs, power management, and automotive-grade solutions, with over 45 years of innovation in embedded systems and power conversion.

EVLONE65W belongs to ST's USB-PD reference design portfolio, developed to accelerate adoption of high-efficiency, digitally controlled GaN-based chargers targeting consumer, computing, and portable electronics markets.

FAQ

What is the purpose of the ST-ONE controller on the EVLONE65W board?

The ST-ONE controller integrates an Arm® Cortex®-M0+ core, offline programmable control logic, synchronous rectification driver, and USB-PD PHY in one SSOP36 package. It manages both primary-side active clamp flyback control and secondary-side USB-PD communication, enabling fully digital, isolated regulation without external MCU or PD controller ICs.

Does EVLONE65W support Programmable Power Supply (PPS) mode?

Yes - EVLONE65W supports two Adjustable PDOs (APDOs): 3.3–16 V @ 3.75 A and 3.3–21 V @ 3.25 A, with 20 mV voltage steps and 50 mA current steps. This meets USB PD 3.1 PPS requirements for dynamic battery charging and precision DC-DC applications.

What protections are implemented on the EVLONE65W board?

EVLONE65W includes brown-out detection, over-current protection (OCP) on primary and secondary sides, over-temperature protection (OTP) via NTC sensor, over-voltage protection (OVP) on output, and under-voltage protection (UVP). These are enforced by ST-ONE firmware and hardware comparators with automatic latch-off and auto-restart behavior.

Can EVLONE65W be used as a production-ready power brick?

No - EVLONE65W is a reference design evaluation board intended for development, validation, and design transfer. It lacks final mechanical enclosure, EMI shielding, safety certification markings (e.g., UL/CE), and production-grade thermal management required for end-product compliance.