Design Win

USB Type-C Power Delivery dual port adapter based on the STPD01 programmable buck converter

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Product overview


The STEVAL-2STPD01 is an evaluation kit composed of an expansion board containing two Type-C ports and integrating two STPD01PUR programmable buck converters for USB Power Delivery, and the NUCLEO-G071RB STM32 Nucleo-64 development board.

The kit exploits the characteristics of the STPD01PUR programmable buck regulator controlled through I²C interface, and the UCPD peripheral embedded in the STM32G071RBT6 microcontroller supported by a dedicated firmware stack to implement a USB Type-C and PD dual port source adapter with power sharing capability.

Once the input power rate is fixed, the kit is able to balance the power on the two ports, supporting the requests sent by the USB PD devices connected to each port.

Taking advantage of STPD01PUR characteristics to output several voltage levels, the solution is able to manage up to 120 W (60 W for each port) according to the DC input power.

The expansion board has been specifically developed to be stacked on the NUCLEO-G071RB development board using the capability of its microcontroller to manage two UCPD peripherals at the same time. It also embeds the TCPP02-M18 USB Type-C port protection for Source applications and the L7983PU50R synchronous step-down switching regulator.

To fully demonstrate the USB Type-C and Power Delivery functionalities of the solution, the STSW-2STP01 software package, containing the demo application example, has been designed for the NUCLEO-G071RB STM32 Nucleo development board.

The solution is compliant with USB Type-C 2.1 and PD 3.1 specifications.

  • All features

    • Two USB Type-C and Power Delivery Source ports
    • Output power up to 120 W-rated (60 W per port), managed through power sharing algorithm
    • Up to four output PDOs for each port (5 V@3 A, 9 V@3 A, 15 V@3 A, 20 V@3 A)
    • Compliant with USB Type-C 2.1 and PD 3.1 specifications
    • Two STPD01PUR DC-DC converters dynamically set by I²C, suitable to implement power sharing in USB PD applications
    • Two on-board TCPP02-M18 protections for USB Type-C and PD Source applications
    • OVP, UVP, OC, short-circuit and OTP protections
    • Surge protection (8/20 µs) and system level ESD protection on VBUS
    • System level ESD protection on CC lines as per IEC61000-4-2 level 4 (±8 kV contact discharge)
    • RoHS compliant

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
CARD Industrial Ecopack2 Yes




Material Declaration**:

Marketing Status






RoHS Compliance Grade


(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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STPD01PUR, TCPP02-M18, L7983PU50R, STM32G071RBT6

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors