600 V High Performance BLDC / PMSM Motor Controller and Driver

    Production >

    Please use PAC5556A for new designs.

    Key Features

    • Fully programmable, high performance 32-bit microcontroller
    • Integrated 600 V DC/DC N-CH buck controller
    • Integrated 600 V gate drivers (250 mA / 500 mA)
    • Integrated PGA (3 differential, 4 single-ended)
    • Integrated DACs and comparators
    • UART, SPI, I2C and CAN serial interfaces
    • Extremely low power total hibernate mode
    • Minimal external components

    Qorvo's PAC5556 belongs to Qorvo's Power Application Controller® (PAC) product family. This family features highly-optimized SOC devices that can implement BLDC or PMSM programmable motor controller and driver in a single integrated IC.

    The product integrates a FLASH-based high-performance MCU, power management, high-side and low-side gate drivers and signal conditioning components in a single product.

    PAC5556 is optimized for AC-powered BLDC or PMSM motor control applications such as AC-powered fans, white goods or compressors. PAC5556 also includes optimized hardware support and software libraries for the IEC/UL 60730 Class B Safety standard.

    PAC5556 contains a 150MHz Arm® Cortex®-M4F with 128kB of FLASH that can be used to implement high-performance motor control and supervisory applications. The MCU also contains motor control peripherals such as 12-bit 2.5 MSPS dual auto-sequencer ADC, PWM timers with hardware dead-time insertion, etc. The product contains an integrated N-CH Buck DC/DC controller, a 5V / 200mA converter and multiple LDOs for system and power management components for the IC and other PCB system power supplies. The Application-Specific Power Drivers™ provide integrated gate drivers for use with an external inverter. The Configurable Analog Front-End™ (CAFE) provides signal-chain components such as differential and single-end amplifiers, comparators and DACs.

    Typical Applications

      • White Goods
      • Compressors and Pumps
      • AC-Powered Fans
    Power Supply Input Voltage(V) 82 to 600
    Power Supply Topology 600 V Buck
    Gate Drivers (High-Side) 3 @ 600 V @ 0.25/0.5 A
    Gate Drivers (Low-Side) 3 @ 1 A
    Microcontroller 150 MHz ARM® Cortex®-M4F
    MCU Flash(KB) 128
    MCU SRAM(KB) 32
    MCU ADC 12b, 2.5MSPS SAR
    MCU GPIOs 26
    MCU PWMs 16
    Serial Interfaces USART (3), I2C, CAN
    Signal Chain Diff Amps 3
    Signal Chain Single Amps 4
    Signal Chain ADC Channels 11
    Package Type QFN, 52-pin
    Package(mm) 10 x 10
    RoHS Yes
    Lead Free Yes
    Halogen Free Yes
    ITAR Restricted No
    ECCN EAR99

    PAC5556EVK1 Evaluation Kit


    Qorvo's PAC5556EVK1 development platform is a complete hardware solution enabling users not only to evaluate the PAC5556 device, but also develop power applications revolving around this powerful and versatile Arm® Cortex®-M4F based microcontroller. The module contains a PAC5556 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 PAC5556EVK1 offers access to each and every one of the PAC5556 device's signals by means of a series of male header connectors.

    PAC5556EVK1 User's Guide

    PAC5556EVK1 Schematics, Layout, BOM, Gerber Files

    PAC5556EVK1 Altium Project Files

    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



    The ET-UARTISO-1 adapter is a USB to UART adapter for Qorvo application GUI communications with the PAC device UART, and can be used for evaluation and debugging of PAC applications.

    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.

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    PAC55xx Software

    PAC55xx BLDC Application Firmware
    Version: V2.3.1
    Installer for the PAC55xx BLDC application firmware, which implements sensored BLDC and sensorless BEMF motor control on all members of the PAC55xx family. The installer contains example 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) and Keil uVision are included.
    PAC FOC Application Firmware
    Version: v4.4.0
    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.
    PAC55xx Software Development Kit
    Version: v1.5.1
    Installer for the PAC55xx Software Development Kit (SDK) that provides register level definitions and peripheral driver APIs for developing Arm M4 application firmware on all PAC55xx devices. The PAC55xx SDK is a unified SDK that supports Keil µVision IDE, IAR Systems Embedded Workbench for Arm (EWARM) IDE, and GCC tool chains.
    PAC55xx Example Code
    Version: v1.4.0
    Installer for the PAC55xx Example Code that provides source code examples for using the PAC55xx peripherals. IDE projects are provided for Keil MDK (µVision), IAR Systems Embedded Workbench for Arm (EWARM), and Eclipse.
    PAC55xx ActiveFlashLight™ Bootloader
    Version: v1.0.0
    Installer for the PAC55xx ActiveFlashLight™ Bootloader that provides source code and example projects for in-system FLASH programming using a UART peripheral. Supported IDEs are Keil MDK (µVision), IAR Systems Embedded Workbench for Arm (EWARM), and Eclipse.
    PAC55xx CANopen Device Driver Installer for the PAC55xx CANopen device driver that provides source code for support of the CANopen protocol stack using the PAC55xx family of devices. Supported IDEs are Keil MDK (µVision), IAR Systems Embedded Workbench for Arm (EWARM), and Eclipse.

    PAC55xx IDE Support

    Development of application firmware for PAC55xx Arm® Cortex® M4 is made easy with standard integrated development environments (IDEs). PAC55xx can be used with the most popular integrated IDEs including Keil MDK(uVision), IAR Systems Embedded Workbench for Arm, and Eclipse.

    PAC55xx Keil Support
    Version: 2018-06-18
    Support files for developing PAC55xx firmware with Keil MDK (uVision).
    PAC IAR Support
    Version: 2019-07-31
    Support files for developing PAC firmware with IAR Embedded Workbench for Arm
    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: 2021-10-23
    PAC support files for Segger J-Link debuggers.
    OpenOCD Support
    Version: 1.0.1 2020-11-02
    PAC support files for miscellaneous debuggers.

    RD5556 High Voltage / High Current Reference Design


    The RD5556SiC reference design shows how the PAC5556 can be coupled with Qorvo’s Silicon Carbide Cascode FETs (UF3C065030K3S) to implement a high power tri-phase inverter, capable of delivering much higher currents than traditionally possible with conventional Silicon MOSFETs or IGBTs. The design includes the motor controller, three SENSE resistor based power stage and a hall sensor interface. Powered from the PAC5556’s High Voltage DC/DC Converter, the system will accept input voltages as high as 400VDC. Altium files, along with all output files are available for download.


    RD5556SiC - 600V 3-phase Brushless DC Motor Control Reference Design