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45W QR USB PD adaptor reference design based on VIPerGaN50 and STUSB4761

Quantity $ per Unit Savings
1 - 500$104.120%
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Parameter NameParameter Value
Target ApplicationAdapters for Tablets, Notebook and AIO
Core ProductSRK1001, STUSB4761, VIPERGAN50
Input Voltage Min Volt90.0
Input Voltage Max Volt264.0
Packing TypeNot Applicable
RoHs compliantEcopack1
Package NameCARD

The EVLVIPGAN50PD 45 W USB Type-C® Power Delivery 3.0 adapter is a USBPD 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.

Key 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