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Analog Devices Inc. AD-PS3803-RD Reference Design

Analog Devices AD-PS3803-RD Reference Design is a power converter capable of harnessing any IEEE802.3at (PoE+, Type 2) compliant downstream Power-Over-Ethernet (PoE) supply to provide galvanically isolated DC power. At the core of this solution is the LT8306 60V no-opto flyback controller, which steps down the 37V to 57V PoE input voltage to a 12V, 24W DC output.

The onboard LT4275 LTPoE++/PoE+/PoE power delivery (PD) controller handles interfacing and power delivery to any PoE supply. The LT4321 ideal diode bridge controller improves end-to-end power delivery efficiency and eases thermal design by utilizing low RDS(ON) N-Channel FETs, replacing the eight-diode configuration typically in a passive PoE rectifier bridge.

The Analog Devices AD-PS3803-RD also supports auxiliary DC power for a wide input range of 37V to 57V.

Features

  • Galvanically isolated 12V flyback DC output with up to 24W of output power capability
  • No transformer third winding or optoisolator for output regulation
  • Supports IEEE802.3at (PoE+, Type 2) and IEEE802.3bt (PoE++, Type 3 and 4) interfacing and power supply control via a configurable jumper array
  • Supports a wide input DC auxiliary power of 37V to 57V

Applications

  • Industrial automation
  • Surveillance camera systems
  • VoIP phones
  • Payment terminal systems
  • Wireless access points

Board Layout

Mechanical Drawing - Analog Devices Inc. AD-PS3803-RD Reference Design

Related Product

Analog Devices Inc. LT8306 No-Opto Isolated Flyback Controllers

Features a low IQ of 390μA (active mode) and a wide input voltage range of 4.5V to 60V.

Learn Moreom Analog Devices Inc. LT8306 No-Opto Isolated Flyback Controllers View Productsrelaterat till Analog Devices Inc. LT8306 No-Opto Isolated Flyback Controllers
Publicerad: 2024-09-06 | Uppdaterad: 2025-02-03