DN06073/D, 24V Input, 5A DC-DC PWM Buck Controller + FET

Reference Design using part NCP3020 by onsemi


  • Application Category
    Power Supplies
  • Product Type
    DC to DC Single Output Power Supplies

For End Products

  • Industrial


  • DN06073/D, Reference design is proposed for a +24V input industrial application where there is a need to step-down the voltage to +3.3V @ 5A. The requirement specified a large electrolytic input capacitance and also to utilize electrolytic capacitors on the output. Target efficiency is >85%. The PCB for the NCP3020 is a 2-layer board for use in applications up to 50W. The synchronous buck converter uses voltage mode control, which can be compensated externally with a transconductance amplifier. The soft start time is fixed. The NCP3020 demonstration board is a flexible design allowing the use of electrolytic capacitors or ceramic capacitors.

Key Features

  • Conversion Type
    DC to DC
  • Input Voltage
    21.6 to 26.4 V
  • Output Voltage
    3.2 to 3.34 V
  • Output Current
    0.01 to 5 A
  • Output Power
    16 W
  • Efficiency
    90 %
  • Topology

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