3-Phase Field Effect Transistor Pre-Driver

MC33937

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The NXP® MC33937A is a Field Effect Transistor (FET) pre-driver designed for three phase motor control and similar applications.

  • The integrated circuit (IC) uses SMARTMOS® technology
  • The IC contains three High Side FET pre-drivers and three Low Side FET pre-drivers
  • Three external bootstrap capacitors provide gate charge to the High Side FETs
  • The IC interfaces to a MCU via six direct input control signals, an SPI port for device setup and asynchronous reset, enable and interrupt signals
  • Both 5.0 and 3.0 V logic level inputs are accepted and 5.0 V logic level outputs are provided
  • Processor Expert® component for MC33937 enables rapid embedded application development

Product Details

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Block Diagram

MC34937 Power Actuation Block Diagram

MC34937 Power Actuation Block Diagram
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Features

Key Features

  • Fully specified from 8.0 to 40 V covers 12 and 24 V automotive systems
  • Extended operating range from 6.0 to 58 V covers 12 and 42 V systems
  • Greater than 1.0 A gate drive capability with protection
  • Protection against reverse charge injection from CGD and CGS of external FETs
  • Includes a charge pump to support full FET drive at low battery voltages
  • Deadtime is programmable via the SPI port

Product Longevity Program

  • This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The MC33937 is included in the 15-year program

Key Parametrics

  • Load Current (IL) [TYP] (A)
    1
  • Number of Channels
    6
  • Drain-to-Source On Resistance (Typ) (mOhm) (RDS(ON))
    0, 5500
  • Load Supply Voltage (Min) (V)
    6
  • Load Supply Voltage (Max) (V)
    58
  • Interface and Input Control
    Parallel/Parallel, SPI/SPI

Documentation

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Hardware

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Software

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Engineering Services

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