Bipolar transistors

Diodes

ESD protection, TVS, filtering and signal conditioning

MOSFETs

SiC power devices

GaN FETs

IGBTs

Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)

Low-voltage (< 48 V) bipolar stepper motor

Prized for their simplicity, high starting torque and straightforward speed control, low-voltage (< 48 V) bidirectional brushed DC motors are the dominant technology in consumer and industrial applications. Despite the growing adoption of brushless alternatives, brushed DC motors continue to offer a cost-effective solution where drive circuit simplicity and ease of control outweigh the maintenance demands of the brush-commutator interface. However, brush arcing, commutation noise and the inductive flyback spikes inherent to motor switching, place demanding requirements on the drive semiconductors and protection circuitry.


  • Block diagram
  • Design considerations
  • Design resources
  • Product listing
  • Support

Block diagram

AC / DC Power management Input powerprotection Gatedriver Commsinterrface Signalprocessing Sensorinterface aaa-045219 Inverter stage CPU CAN Wired / Wireless grid M Highlighted components are Nexperia focus products.

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To view more information about the Nexperia components used in this application, please select a component above or click on a component (highlighted in blue) in the block diagram.

Design considerations

  • Repetitive brush commutation generates unpredictable voltage spikes – MOSFETs must be characterised for repetitive avalanche energy
  • Stall or start-up current can exceed full-load current, so drain-to-source surge current ratings must be sized accordingly

 

Product listing