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

• 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