TIDA-00290 Reference Design

Texas Instruments

PoE PSE Type 2 (30W) IEEE 802.3at Fully Autonomous Quad Port Solution.

Description

This reference design is fully autonomous IEEE802.3at: Type-2 (30 W) Power-over-Ethernet (PoE) 4-port power sourcing equipment (PSE). An additional configuration of two non-standard: high-power ports (This reference design is made up of two boards:Motherboard (TPS23861EVM-612)Daughter board (TPS23861EVM-613)The daughter board features two TPS23861 IEEE 802.3at PoE PSE controller devices. The motherboard provides a multi-port base platform interface for the daughter board. Additionally: the motherboard provides interfaces for two optional boards: MSP-EXP430G2 LaunchPad™ (if custom power management programmability is desired) and USB-to-GPIO interface adapter (if PC GUI-based power management configuration is desired).This reference design has undergone exhaustive PoE testing and passes all industry-recognized conformance/interoperability test suites allowing customers to copy/paste the design without concern. The 2-layer PCB: daughter card: design delivers all of this on a low-cost platform.

Features
  • TPS23861 PSE devices default to full autonomous mode so no digital interface is requiredPasses UNH-IOL PoE conformance/interoperability and SIFOs Type 1/Type 2 test suitesFour IEEE802.3at: Type 2 (30 W) ports and two non-standard: high power (Entire design is powered by a single DC supply. Logic power is delivered by an on board 3.3-V regulator (LM5007)I2C interface allows programming via PC-based-GUI: or microcontroller-based codePort ON status LEDs provides simple status indication in fully autonomous mode
Applications
  • Optical network terminal unit (ONT)
  • Small business switch
  • Campus & branch switches
Product Categories
  • Power management

Parts

Part Number Name Companion Part
ISO7241C ISO7241C Buy Datasheet
LM5007 LM5007 Buy Datasheet