Microchip Technology UPD301B/C USB Interface ICs

Microchip Technology UPD301B/C USB Interface ICs are designed to adhere to the USB Type-C™ cable and connector specification and USB Power Delivery 3.0 (PD) specification. These ICs are stand-alone and offer a small form factor USB Type-C™ Power Delivery port controller. These ICs are integrated PD solutions with SAMD20 (32-bit ARM Cortex-M0+) microcontroller and UPD350 PD MAC/PHY functionality. The UPD301B/C integrates many analog discrete components required for USB Type-C PD applications, including two VCONN FETs with Rp/Rd switching. Applications include point-of-sale terminals, charging lockers, IoT products and sensors, smart speakers, monitors, conference systems, power tools, multi-port charging docks, and automotive rear seat charging ports.


  • USB Type-C™ (1) Power Delivery (PD) solution for:
    • Source-only applications (UPD301B)
    • Sink-only, dual role power, and dual role data applications (UPD301C)
  • Companion device for USB PD Software Framework (PSF) open-source firmware stack
  • Fully customizable software
  • Standard PD power profiles (15/27/45/60/100W) supported with no software modification
  • USB PD 3.0 compliant MAC
  • USB Type-C™ connector support with connection detection and control
  • Integrated analog discrete components reduce bill of materials and design footprint
  • Easily supports up to 3 additional PD ports port via UPD350 add-on
  • Commercial, industrial, and automotive temperature support
    • 32-bit Arm Cortex-M0+ CPU
  • 64KB flash and 8KB RAM
  • Optional two, three, or four-port solution via external UPD350
    • SPI for external UPD350 communication
    • Power delivery firmware controls all ports
  • Integrated analog discrete components
    • VCONN FETs with Rp/Rd switching
    • Dead battery Rd termination (UPD301C only)
    • Programmable current sense for overcurrent conditions
  • Voltage sense for overvoltage conditions
  • Power and I/Os:
    • Integrated 1.8V voltage regulator
    • 10 configurable general-purpose I/O pins
  • Package:
    • 40-VQFN 6.0mm x 6.0mm
  • Environmental:
    • 0°C to 70°C commercial temperature range
    • Industrial/AEC-Q100 automotive grade 3
    • -40°C to 85°C temperature range


  • Point-of-Sale terminals
  • Charging lockers
  • IoT products and sensors
  • Smart speakers and monitors
  • Conference systems
  • Power tools
  • Multi-port charging docks
  • Automotive rear seat charging ports

System Block Diagram with Source only Application

Block Diagram - Microchip Technology UPD301B/C USB Interface ICs
Published: 2021-08-29 | Updated: 2022-03-21