STMicroelectronics VIPERGAN50 | Demoboard EVLVIPGAN50PD

Description

This document reports the functional, thermal, and efficiency measurement results for the EVLVIPGAN50PD 45 W QR mode flyback adaptor reference design for USB Type-C™ PD adaptors. This reference design meets CoC Tier 2 and DoE Level 6 efficiency requirements with peak efficiency of 92.4% at full load.The evaluation board implements at the primary side a quasi-resonant flyback converter based on the VIPERGAN50 controller with optocoupler feedback for voltage regulation. The main devices used in this reference design are:VIPERGAN50: this controller combines a high performance low-voltage PWM controller chip with a 650 V HV startup cell in the same package. The advanced power management with low quiescent helps to achieve low standby consumptions.SRK1001 and STL110N10F7: to increase the system efficiency, the rectification is based on the SRK1001 adaptive synchronous rectification controller. The SRK1001 drives the gate of the 100 V STripFET F7 technology power MOSFET STL110N10F7.STUSB4761: this controller offers the benefits of a full hardware USB PD stack allowing robust, deterministic, and safe negotiation in line with the USB PD standard.The EVLVIPGAN50PD is a fully assembled kit intended for performance evaluation only, not an end product for sale.

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

Typical applications

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

More information

• Datasheet
• IC product information