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Mini BLDC Servo

Overview

The growing presence of robotic systems has increased the demand for small, precise, and cost-efficient BLDC servo applications. This trend drives higher integration, combining motor control with position sensing to enable advanced control algorithms. The system offers a low-power servo implementation capable of driving up to 75W BLDC motors with precise position control.

System Benefits:

  • Flash-based MCU for reliable and efficient operation
  • Optional interfaces tailored to system requirements
  • Support for multiple control algorithms
  • High-accuracy speed control for precision applications
  • Low parts count for cost-effective designs

Block Diagram

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4:3 ratioConnector Arrow.29Connected signals line.110Connector Line.65Sheet.1Sheet.2Sheet.3Sheet.4WS120WS120WS120HVPAKHVPAKHVPAKConnector 2Resistor - FixedGroundSheet.24Sheet.25Connector ArrowConnected signals arrowConnector Arrow.28Connected signals arrow.30Bi-directionalSheet.32RectangleCircle.130Circle.131Line.132Line.134Bi-directional.38Sheet.39RectangleCircle.130Circle.131Line.132Line.134RS-485RS-485RS-485Bi-directional.46Bi-directional.47Vertical Wire Bundle222Sheet.50Vertical Wire Bundle.51222Sheet.53Vertical Wire Bundle.54333Sheet.56Sheet.57RectangleCircle.130Circle.131Line.132Line.134Resistor - Fixed.63Connector LineConnector Line.66Ground.67Sheet.68Sheet.69Resistor - Fixed.70Connected signals lineConnected signals line.72Capacitor Non-polarizedSheet.84Sheet.85Sheet.86Sheet.87Connected signals line.88Ground.89Sheet.90Sheet.91Digital Control/PositionDigital Control/PositionDigital Control/Position3.3V3.3V3.3V3.3V3.3V3.3V24V24V24VVertical Wire Bundle.96666Sheet.98Vertical Wire Bundle.99 222Sheet.101IPSIPSIPSBi-directional.103Vertical Wire Bundle.104333Sheet.106Connector Arrow.107Resistor - Fixed.108Connector Line.109High-Speed UART ABI and Step/DirHigh-Speed UART ABI and Step/DirHigh-Speed UARTABI and Step/DirBLDC MotorSquare.40Inductor.10Sheet.115Sheet.116Sheet.117Inductor.14Sheet.119Sheet.120Sheet.121Inductor.18Sheet.123Sheet.124Sheet.125Dynamic connectorDynamic connector.27Dynamic connector.25SquareSheet.130Square.41Sheet.132Sheet.133Sheet.134Ground.135Sheet.136Sheet.137Connector Arrow.138Vertical Wire Bundle.139 333Sheet.141PWM / 0-10V Analog ControlPWM / 0-10V Analog ControlPWM / 0-10V Analog Control 3.3V3.3V3.3VDC/DC BuckDC/DC BuckDC/DC BuckSheet.144MCUMCUMCUVddVddVddSCI/I2CSCI/I2CSCI/I2CI2CI2CI2CUARTUARTUARTADCADCADCPWMPWMPWMSCI/GPIOSCI/GPIOSCI/GPIOADCADCADC

MCU

RA Arm Cortex-M MCUs

DC/DC Buck

Buck Regulators (Integrated FETs)

RS-485

RS-485/422 with Enhanced ESD Protection

IPS

Inductive Position Sensors

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