AS1851

GreenEdge™ IEEE802.3af/802.3at (13W-30W) PoE PD Controller with HV Isolation

  • Digitally Isolated Programmable Power
  • PoE PD Controller
  • Type 1 IEEE® 802.3af and Type2 IEEE® 802.3at Compliant PD for 13-30W applications
  • Automatic PoE-Plus (Type 2) detection in H/W and I2C Modes
  • Low Resistance PD Power FET Switch (0.5 ohm typical)

Primary-Side DC-DC Controller

  • High-efficiency DC-DC Controller with Digital Optimization
  • Primary-Secondary High-voltage integrated Digital Isolation
  • Programmable Primary Clock Frequency
  • Local-power operation down to 9.5V

Secondary-Side Power Outputs

  • Programmable PWM Frequencies synched to External Clock
  • Synchronous Controller with programmable power-FET timing for high efficiency at both light and full load

Key Applications

  • Voice-over-IP (VoIP) phones
  • Wireless LAN & WiMAX access points (WAP)
  • Pan, Tilt, Zoom (PTZ) Cameras, IP cameras
  • Thin-client and notebook computers
  • Fiber-to-the-home (FTTH) terminals