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specification.md

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RadiX Drive Specification

⚡ Electrical characteristics

  • Input Powering requirements:
    • VSYSTEM system supply: 5VDC ± 0.2VDC
    • VMOTOR motor supply: 2-75VDC with absolute maximum 90VDC
  • Maximum current requirements: 6ARMS
  • Onboard voltage sources (taken from VSYSTEM ):
    • 3.3V Buck DC-DC for system supply
    • 12V Boost DC-DC for mosfets supply
    • 3.3V LDO for analog domain

🔄 Motor Driving Control Capabilities

  • Supported load types:
    • Brushed DC motor: 2x 8ARMS or 1x 16ARMS
    • Stepper motor: 1x Unipolar or Bipolar 8ARMS
    • BLDC or PMSM: 1x 8ARMS
    • Solenoid: 4x 8ARMS or 2x 16ARMS or 1x 32ARMS
    • Transformers: 2x 8ARMS or 1x 16ARMS
  • Maximum output current IRMS: 8ARMS per channel with 12APEAK
  • Maximum output power PMAX: 450WRMS@75V with 600WPEAK@75V
  • Maximum rated power PRATED: PRATED ≤ 6 x VMOTOR and PRATED ≤ 4 x IRMS
  • Energy saving features: Passive Braking, Freewheeling and automatic power down
  • Working PWM frequency FPWM: up to 83kHz (11bit resolution) with up to 99.5% duty cycle
  • Maximum phase channel resistance: 30mΩ
  • Supported position sensors:
    • 2x ABZ encoder
    • SPI/SSI encoder
    • 2x UART/USART encoder
    • I2C encoder
    • Hall sensor (3 inputs)
  • Diagnostic functions: overheat detection, short-circuit detection, overcurrent detection for each channel, under-voltage detection, over-voltage detection, open-load detection

🖥️ MCU Performance and External interfaces

MCU: High-performance Arm Cortex-M4 MCU STM32G431CB running at 170MHz with:

  • 128KB Flash memory and 32KB SRAM memory and 1Kb OTP
  • Math accelerator with trigonometric functions calculations support;
  • True random number generator
  • Internal HSI and RTC with external oscillator option

Interfaces:

  • USB2.0 for PC communication

  • CAN-Bus with CAN-FD 5MBit/s support for high-speed or long-range wired connection with daisy chain connection option

  • SWD programming interface with reset feature

  • 11x fast multifunctional bidirectional 5V tolerant I/O with hardware support of:

    • 2x USART, 2x UART, 3x UART Single wire
    • 2x I2C
    • 1x SPI or SSI
    • 2x ABZ
    • Custom functionality

I/O protection features:

  • ESD protection (persistent against electrostatic discharge)
  • Overcurrent protection

User interaction:

  • RGB LED for indication of working mode or current status

📏 Mechanical data

  • Size dimensions:
    • PCB outline: 58x37.5x4mm
    • Driver housing: 64x49x10mm
  • Weight:
    • 10g board only
    • 60g with aluminum housing

🔥 Operating conditions

  • Working temperature range: -25 to +80 degrees Celcius
  • Environment humidity range: 0 to 90%
  • Environmental safety: potential Lead-Free and RoHS compliance
  • Maximum heat dissipation: 15W from motor control circuit and 0.5W from other system