New Product Introduction

Elmos E523.81 motor controller

Elmos presents a new generation of 3-phase BLDC motor controllers, the E523.81.

Elmos E523 Series chip image

This IC integrates all components to control and drive a small BLDC fan or pump in a standalone application with minimum external component effort.

The E523.81 is a sinusoidal BLDC Motor Controller with an integrated driver that provides continuous currents up ro 500 mA. The module is also suited for applications with increased thermal requirements due to a temperature range of - 40°C to + 170°C. 


  • IC for standalone PMSM applications
  • Internal power bridge up to 500mA(RMS)
  • selectable PWM speed and error interface or analog speed interface
  • SVM (Space Vector Modulation) realizes +14% output amplitude
  • Tacho output
  • Current controlled start up
  • Integrated configurable error handling
  • Blockage detection
  • Automatic restart and rotor delocking
  • Speed or current control
  • Windmill functions
  • Safety functions for overtemperature, over-/undervoltage, overcurrent and short circuit


  • Small PMSM / BLDC FANs
  • Small PMSM / BLDC Pumps

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