40 Volt / 20 Watt Low-Power BLDC Controller and Driver with Integrated FETs

    Key Features

    • 50 MHz Arm® Cortex®-M0, 32 kB FLASH
    • 10-bit, 1MSPS SAR ADC with sequencer
    • 40 V input charge pump DC/DC, LDOs, ADC VREF
    • Integrated 40 V / 300 mΩ MOSFETs
    • Integrated signal chain
    • 6 x 6 mm, 40L TQFN
    • Ideal for battery-powered BLDC motors

    Qorvo's PAC5285 belongs to Qorvo's Power Application Controller (PAC) family. This family features highly-optimized SOC devices that can implement BLDC or PMSM programmable motor controller and driver functionality in a single integrated IC.

    The PAC5285 integrates a 50MHz Arm Cortex-M0 with 32kB FLASH, power management, gate drivers and power MOSFETs and signal conditioning in a small single product.

    PAC5285 is optimized for low-power BLDC motor control applications up to 20W.

    Typical Applications

      • Small pumps and fans
      • Low-power handheld consumer electronics
    Power Supply Input Voltage(V) 40
    Power Supply Topology Charge Pump
    Gate Drivers (High-Side) 3 (integrated FETs)
    Gate Drivers (Low-Side) 3 (integrated FETs)
    Gate Drivers (Open-Drain) 0
    Microcontroller Arm Cortex-M0
    MCU Flash(KB) 32
    MCU SRAM(KB) 8
    MCU ADC 10-bit 1MSPS SAR
    MCU GPIOs 8 @ 3.3V/5V, 4 @ 3.3V
    MCU PWMs 3
    Serial Interfaces UART/SPI, I2C
    Signal Chain Diff Amps 1
    Signal Chain Single Amps 0
    Signal Chain ADC Channels 5
    Package Type 40-pin QFN
    Package(mm) 6 x 6
    ITAR Restricted No
    ECCN EAR99

    PAC5285EVK1 Evaluation Kit


    Qorvo's PAC5285EVK1 development platform is a complete hardware solution enabling users not only to evaluate the PAC5285 device, but also develop power applications revolving around this powerful and versatile Arm® Cortex®-M0 based microcontroller. The module contains a PAC5285 Power Application Controller® (MCU) and all the necessary circuitry to properly energize the MCU and its internal peripherals once power is applied.

    To aid in the application development the PAC5285EVK1 offers access to each and every one of the PAC5285 device's signals by means of a series of male header connectors.

    PAC5285EVK1 User's Guide

    PAC5285EVK1 Schematics, Layout, BOM, Gerber Files and Altium Project

    Supporting Evaluation Tools


    The ET-UARTSWD adapter is the preferred adapter for evaluation of PAC devices/firmware and combines a USB to UART adapter with SWD debugger connector adaptation into a single board with isolation. The ET-UARTISO-1 adapter provides only the USB to UART adapter with isolation for Qorvo application GUI communications.


    The ET-UARTSWD isolated communications and debugging interface unifies two modules into one. Previously, interfacing a PC Computer to any of Qorvo's PAC5xxx Evaluation Modules required one module to enable UART based serial communications and a second module to allow for in-system debugging and FLASH memory programing.

    Download ET-UARTSWD User Manual

    PAC5xxx Flash Programmer Tools

    Qorvo has partnered with Flash Programmer solution providers to support our Intelligent Motor Control PAC product families. These proven tools are suitable for emerging and high volume product manufacturing. Both package level (socketed) and board level Flash programming solutions are available.

    Qorvo will support other vendors familiar with Arm® Serial Wire Debug (SWD) protocol to add PAC product compatibility on their existing Flash programmer platforms. For details, please contact Qorvo Sales.

    Elprotronic Logo Leaptronix Logo
    Xeltek Logo Zeztek Logo

    PAC5285 Software

    PAC FOC Application Firmware
    Version: v4.4.3
    Installer for the PAC FOC application firmware designed to show case motor control using sensorless Field Oriented Control (FOC) on all PAC devices. The installer contains example FOC application source code, Windows graphical user interface (GUI), and documentation to allow the user to configure the system to work with their target motor. Project files for IAR Systems Embedded Workbench for Arm® (EWARM), Keil uVision and Eclipse are included. The FOC application provides a configurable set of features to meet many different application requirements such as sensorless position/speed estimator, start-in-motion (SIM), three or single shunt operation, open phase detection (OPD), field weakening and others.
    PAC52xx Software Development Kit
    Version: v2.8.1
    Installer for the PAC52xx Software Development Kit (SDK) that provides register level definitions and peripheral driver APIs for developing Arm M0 application firmware on all PAC52xx devices. The PAC52xx SDK is a unified SDK that supports Keil µVision IDE, IAR Systems Embedded Workbench for Arm (EWARM) IDE, and GCC tool chains.
    PAC52xx Example Code
    Version: 2019-05-03
    Installer for the PAC52xx Example Code that provides a simple source code example for getting started with the following IDE projects: Keil MDK (µVision), IAR Systems Embedded Workbench for Arm (EWARM), and Eclipse.
    PAC52xx ActiveFlashLight™ Bootloader
    Version: v1.2.1
    Installer for the PAC52xx ActiveFlashLight™ Bootloader that provides source code and example projects for in-system FLASH programming using the UART peripheral. Supported IDEs are Keil MDK (µVision), IAR Systems Embedded Workbench for Arm (EWARM), and Eclipse.

    PAC52xx IDE Support

    Development of application firmware for PAC52xx Arm® Cortex® M0 is made easy with standard integrated development environments (IDEs). Several of the most popular IDEs contain support for PAC52xx devices including Keil uVision, and IAR Systems Embedded Workbench for Arm®. Eclipse development is possible using J-Link by downloading and installing the "Eclipse with PAC support" package.

    PAC52xx Keil IDE Guide
    Version: 2018-08-21
    Guide for installing Keil uVision for development of PAC52xx application firmware.
    PAC52xx Keil .pack v1.0.9 to v2.0.0 upgrade
    Version: 2018-02-22
    Guide for upgrading the Keil uVision PAC52xx pack from v1.0.9 to v2.0.0.
    PAC IAR Support
    Version: 2019-07-31
    PAC IAR Systems Embedded Workbench IDE installation guide and patches.
    Eclipse with PAC Support
    Version: v1.1.0 2019-03-27
    Installer for Eclipse and supporting plugins for development on the PAC family of devices.
    Segger J-Link Support
    Version: 2019-10-23
    PAC support files for Segger J-Link debuggers.
    OpenOCD Support
    Version: 1.0.1 2020-11-02
    PAC support files for miscellaneous debuggers.

    PAC5285 FOC Reference Design

    PAC5285 PCB

    The RD5285 FOC Reference design showcases how the fully integrated PAC5285 device can be used to implement a tri phase inverter, with as much as 20W power output, to drive small PMSM motors by executing Field Oriented Control (FOC) algorithms. The PCB measures 1” x 0.975” (25.4 mm x 24.765 mm) and contains all of the components required to drive a tri phase motor in Single Shunt Configuration

    PAC5285 FOC .zip file