Features

•

Input voltage range: Universal AC from 90 to 264 VAC with 47 Hz to 63 Hz

frequency

•

Output voltage: 5 V, 9 V, 12 V, 15 V, 20 V

•

Output current: 3 A @5 V, 9 V, 12 V, 15 V – 2.25 A @ 20 V

•

Maximum output power: 45 W

•

Efficiency standards: Meet CoC Tier 2 and DoE Level 6 efficiency requirements

•

Peak efficiency: > 92 %

•

Support for USB-PD, Type C output connector

•

Meets IEC55022 Class B conducted EMI

•

Key products: VIPerGaN50, STUSB4761, SRK1001

Application

•

AC-DC smart chargers for smartphones, tablets, laptops and other handheld

equipment

Description

reference design solution. It is an isolated power supply based on the VIPERGAN50,

a new offline high-voltage converter from the VIPerPlus family with a 650 V HEMT

Power GaN transistor, designed for quasi-resonant flyback converters, capable of

providing an output power up to 50 W in wide range.

At the secondary side, to increase the system efficiency, the rectification is based on

the SRK1001 adaptive synchronous rectification controller.

Still on the secondary side, the CC/CV regulation loop to drive the power regulation

stage and the USB Type-C® PD interface is based on the STUSB4761 controller.

This controller offers the benefits of a full hardware USB PD stack allowing robust,

deterministic and safe negotiation in line with USB PD standard.

The evaluation board implements a robust adapter protected for output overvoltage,

output undervoltage, output over power and output short-circuit. This reference

design, based on STMicroelectronics semiconductors, helps designers to develop

adapters with a short bill of materials to obtain a cost-effective and fast design.

Product status link

EVLVIPGAN50PD

VIPERGAN50

STUSB4761

SRK1001

Product summary

45W USB PD

adapter

EVLVIPGAN50PD

Energy saving

offline High Voltage

Converter with 650

V GAN power

VIPERGAN50

Stand-alone USB

PD controller (with

integrated CC/CV)

STUSB4761

Adaptive

synchronous

rectification

controller for flyback

converter

SRK1001

Applications

USB Type-C PD

45 W QR USB PD adaptor reference design based on VIPERGAN50 and

STUSB4761

EVLVIPGAN50PD

Data brief

DB4675 - Rev 1 - March 2022

For further information contact your local STMicroelectronics sales office.

www.st.com