STMicroelectronics EVLVIPGAN65PD

Overview

EVLVIPGAN65PD from STMicroelectronics is a 65 W USB Type-C® Power Delivery 3.0 reference design evaluation board implementing an isolated quasi-resonant flyback AC-DC adapter. It integrates VIPERGAN65 (650 V GaN-based HV converter), SRK1001 (adaptive synchronous rectification controller), and STUSB4761 (hardware-based USB PD 3.0 controller) to deliver five fixed PDOs (5–20 V, up to 3.25 A) with peak efficiency >93.5% at 230 VAC, targeting compact high-efficiency chargers for laptops and tablets.

For engineers reviewing the EVLVIPGAN65PD datasheet, EVLVIPGAN65PD pinout, EVLVIPGAN65PD application, or EVLVIPGAN65PD equivalent, key selection considerations include its integrated GaN primary-side control, hardware USB PD negotiation stack, CC/CV regulation loop implementation, and protection features including OVP, UVP, OPP, and SCP - all validated in a complete 3-board reference layout.

Technical Context

The design uses a quasi-resonant flyback topology with VIPERGAN65 operating in valley-switching mode, combining a 650 V HV startup cell and low-voltage PWM controller in one package. Its optocoupler feedback enables precise secondary-side voltage regulation across all PDOs.

STUSB4761 provides full hardware USB PD 3.0 stack with integrated CC logic, VBUS sensing, VCONN management, and fault reporting via dedicated pins (Isense, Vsense, Fault). SRK1001 drives synchronous rectification on the secondary side up to 300 kHz, optimizing conduction loss reduction under light-to-heavy load conditions.

Key Specifications

Availability

EVLVIPGAN65PD is available at Aetrix Electronics and suitable for USB PD adapter development, fast-charging reference design validation, and GaN-based power supply qualification requiring stable component supply and full schematic/layout documentation.

Supply support for EVLVIPGAN65PD 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, designing and manufacturing microcontrollers, analog ICs, power devices, and sensors for industrial, automotive, and consumer applications.

EVLVIPGAN65PD belongs to ST's PowerGaN Reference Design portfolio, created to accelerate time-to-market for high-density, high-efficiency USB PD adapters using integrated GaN and hardware-based USB protocol controllers.

FAQ

What is the purpose of the daughterboard in the EVLVIPGAN65PD design?

The daughterboard hosts the STUSB4761 USB PD controller, Type-C connector interface, CC1/CC2 signal conditioning, VCONN power path, and hardware-level fault monitoring circuitry. It separates USB protocol handling from power conversion to simplify layout, improve EMI performance, and enable modular firmware updates without redesigning the main power stage.

Does EVLVIPGAN65PD support programmable power supply (PPS)?

No. EVLVIPGAN65PD implements only fixed PDOs as defined in USB PD 3.0 specification and does not support PPS, which requires dynamic voltage/current adjustment via BMC communication. The STUSB4761 used here lacks PPS firmware capability and is configured for fixed-profile negotiation only.

Can the VIPERGAN65 on this board be replaced with a non-GaN controller?

No - the VIPERGAN65 integrates a 650 V GaN HEMT with gate driver and HV startup in one package; substituting it with a silicon-based controller would require redesigning gate drive timing, ZCD sensing, transformer turns ratio, snubber network, and thermal layout due to fundamental differences in switching speed and R_DS(on) behavior.

Is the EVLVIPGAN65PD compliant with USB-IF certification requirements?

The EVLVIPGAN65PD reference design meets USB PD 3.0 electrical and protocol specifications and has passed internal interoperability testing with certified hosts and sinks. However, final USB-IF certification requires submission of the end-product - not the evaluation board - to an authorized test lab for formal compliance and logo licensing.