NCP1095 PoE PD interface controller IEEE 802.3bt

The Power Over Ethernet (PoE) Powered Device (PD) Interface Controller NCP1095 contains all features needed to implement an IEEE.3bt, IEEE 802.3af, and/or IEEE 802.3at application. This includes detection, classification, and current limiting. The NCP1095 supports high power applications up to 90W through an external pass transistor. A power good and auxiliary power supply detection pin guarantee a proper enabling or disabling of the DC/DC converter to comply with type I, II, III and IV operation.

Key features

  • IEEE 802.3bt compliant, supporting high power applications up to 90W
  • External hot swap transistor & current sense resistor
  • Auxiliary power supply detection feature and power good pin
  • Inrush Current Limiting, Current and Temperature Protection Features

Additional Features

  • 802.3bt UHP 90W compliant PoE PD device
  • Classification
    • 5 finger (type 1, 2, 3 and 4 PSE)
    • Auto-classification
  • External hot swap transistor & current sense resistor
  • Fixed inrush current
  • Standard UVLO
  • Over current protection / Over temperature protection
  • Interface to microcontroller
    • Classification result
    • LCF for Short maintain power signature
  • Interface to external DC/DC, Power Good
  • Short MPS (Maintain Power Signature)
  • Auxiliary power supply detection, Disable pass switch & back-feed protection
  • TSSOP-16 package


  • Video conferencing
  • Wireless access points
  • IP camera
  • Mini base stations
  • Point of sales/retail
  • Industrial (motor control units)
  • LED lighting

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