dsPIC33CK Low Voltage Motor Control (LVMC) Development Board(DM330031)

The dsPIC33CK Low Voltage Motor Control (LVMC) Development Board is a cost-effective rapid development platform for Brushless DC (BLDC), Permanent Magnet Synchronous Motor (PMSM) and Internal Permanent Magnet (IPM) motor control applications. The LVMC development board is ideal to explore and prototype motor control applications that operate from 12 to 48 Volts and up to 10A of continuous current. The board can also support higher current, up to 20A with an optional fan. The board supports application development for sensored six-step trapezoidal or sinusoidal control with hall sensors, sensorless BEMF measuring phase voltages, or Field Oriented Control (FOC) with single, dual or triple-shunt resistor current sensing circuits. This flexibly in architecture allows you to evaluate various design techniques that suit your application requirements, balancing the cost and performance.

The LVMC board features the high-performance, single core dsPIC33CK256MP506 Digital Signal Controller (DSC) with 256KB Flash, 8-pairs of advanced motor control PWMs, three integrated 3.5Msps ADCs for implementing math intensive motor control algorithms like sensorless FOC, initial position detection, field weakening, etc

The LVMC board comes with two mikroBUS™ headers to expand the board features to meet your application needs. It features a high-speed USB to UART interface for debug purpose and to monitor key parameters in your control algorithm using a graphical PC tool like X2C Scope or RTDM.

Benefits

  • Low-cost development board to prototype your low-voltage motor control designs
  • A complete design serving as a reference to implement your motor control solution using the dsPIC33CK DSC and MIC4605 MOSFTET gate drivers in a small form factor
  • Flexible development board to explore various BLDC/PMSM/IPM commutation techniques:
  • Supports trapezoidal 6-step control or FOC of BLDC/PMSM/IPM motors
  • Multiple feedback methods to support both sensored and sensorless operation, phase voltage feedback, Hall sensors, optical/magnetic encoders using the QEI, and operation using single, dual or triple low-side current sensing circuits
  • Signal conditioning circuit using either the on-chip op amps of the dsPIC33CK DSC or the external op amps populated on the LVMC board
  • PICKit-on-Board (PKoBv4) built into the board provides a standalone development tool eliminating the need for an external programmer or debugger

Возможности

    Motor Control

    • Three-phase inverter bridge for 12 to 48 volts motors
      • Three phase bridge with six NMOS MOSFETs supports 10A of continuous current or 20A with additional heat sink or fan
      • Three MIC4605 Half-Bridge MOSFET gate drivers (85V)
    • Separate Hall sensors and optical/magnetic encoder interfaces for sensored motor control
    • Phase voltage feedback for sensorless BEMF BLDC or PMSM operation
    • DC bus current sense shunt resistor circuit for single-shunt FOC control or BLDC current control
    • Phase current sense shunt resistor in inverter leg for dual or triple-shunt FOC control
    • Phase current signal conditioning using the internal op amps on dsPIC33CK DSC or the external op amps on the LVMC board for current sensing
    • Overcurrent protection using the dsPIC33CK DSC’s internal comparator and 12-bit DAC
    • DC Bus Voltage feedback for over-voltage protection
    • Temperature sensor for monitoring the MOSFET temperature
    • Connector to interface external thermocouple (I2C) and external temperature sensor to monitor motor temperature

    User Interface

    • 6 green LEDs for PWM status indication
    • 1 Red LED for power-on status indication
    • 2 Blue LED for debug indication
    • 1 Potentiometer & 3 push buttons to implement user inputs like speed reference, start, stop forward, reverse, etc.
    • Reset switch

    Power Supply Connectors

    • Screw terminal connector to power from an external DC power supply
    • Barrel connector to power the board from a 24V/2.5A AC/DC power adaptor

    On-board Power Supply

    • 12-Volt gate drive power supply
    • 5-Volt step-down DC/DC for Hall sensors, optical encoder and the mikroBUS™ sockets
    • 3-Volt step-down DC/DC for the dsPIC33CK DSC, serial interfaces and mikroBUS™ sockets.

    Communications Interfaces

    • UART to USB circuit and connector (mini-B) for high-speed communications for debuggers such as X2C Debug
    • Two mikroBUS™ sockets to expand serial communications functionality using MikroElektronika Click boards™

    Programming Interfaces

    • On-board PKoBv4 Debug Circuit for code programming and debugging eliminates the need for an external programmer/debugger
    • Additional ICSP™ connector for programming the dsPIC® DSC device using an external programmer/debugge

Используемые компоненты

Производитель: Microchip Technology Inc.
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