40W integrated PoE-PD and DC-DC Converter Controller  

40W integrated PoE-PD and DC-DC Converter Controller  

The ASIC contains a Power over Ethernet Powered Device (PoE-PD) and a flexible and configurable DC-DC controller. This integrated current mode DC-DC controller facilitates isolated and non-isolated fly-back, forward and buck converter topologies. It has all the features necessary for a flexible, robust and highly efficient design including programmable switching frequency, duty cycle up to 80 percent, slope compensation, and soft start-up. The datasheet can be downloaded here: NCP1083-D.


  • PoE-PD supporting IEEE802.3af and IEEE802.3at standards
  • PWM DC-DC controller for flyback, buck and forward converters
  • Auxiliary Supply Support
  • Current slope compensation circuit
  • Over-temperature protection and programmable UVL (under voltage lockout)
  • Component part number NCP1083
  • 4kV HBM ESD
  • Temperature range -40°C to 85°C
  • 0.35um BCD technology with HV extension (I3T80)

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