Three-Phase BLDC Motor Controller with Synchronous Rectification and 50V Operation

A3938

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The A3938 provides efficient and reliable control of 3-phase BLDC motors up to 50V, featuring synchronous rectification to minimize power dissipation and integrated protection features to safeguard MOSFETs.

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Top Features

Packaging

  • Drives a wide range of N-channel MOSFETs
  • Low-side synchronous rectification
  • Power MOSFET protection
  • Adjustable dead time for cross-conduction protection
  • Selectable coast or dynamic brake on power-down or RESET input
  • Fast/slow current decay modes
  • Internal PWM current control
  • Motor lead short-to-ground protection
  • Internal 5 V regulator
  • Fault diagnostic output
  • Thermal shutdown
  • Undervoltage protection

The 38-Pin LD package is lead (Pb) free, with 100% matte tin plated leadframe.

 

Part Number Specifications and Availability