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MAXREFDES1015: Minimum Component PSE Controller for Detecting IEEE 802.3af/at Devices

MAXREFDES1015

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Description

The MAX5971B is a single-port power controller designed for use in IEEE® 802.3af/at-compliant power-sourcing equipment (PSE). This device provides powered device (PD) discovery, classification, current limit, and DC and AC load-disconnect detections. The MAX5971B supports both fully automatic operation and software programmability, and features an integrated power MOSFET and sense resistor. The device supports detection and classification operation from a single 54V supply. In addition, it supports 2-event classification and new Class 5 classification of high-power PDs. The MAX5971B provides up to 40W to a single port (Class 5 enabled) and still provides high-capacitance detection for legacy PDs.

Key Features

  • IEEE 802.3af/at Compliant
  • Up to 40W for Single-Port PSE Applications
  • Integrated Power MOSFET and Sense Resistor
  • Supports 54V Single-Supply Operation
  • PD Detection and Classification
  • Supports Both AC Load and DC Load Detections
  • LED Indicator for Port Status

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Designed, Built, Tested

Board pictured here has been fully assembled and tested. Not available for sale.

 

Schematic

PCB Layout

Bill Of Material

Parametrics

Input Type Vin(Min) Vin(Max) Iout(Max) Single/Multiple Output Vout(V) Pout(W) Isolated/Non-Isolated Topology
- -32.0 -60.0 0.8 - -32.0 - - -

Parametrics

Input Type -
Vin(Min) -32.0
Vin(Max) -60.0
Iout(Max) 0.8
Single/Multiple Output -
Vout(V) -32.0
Pout(W) -
Isolated/Non-Isolated -
Topology -

Design Files (4)

Title Type Size Date
maxrefdes1015-assembly-top PDF 678KB 2017-11-03
maxrefdes1015-pcb PDF 1MB 2017-11-03
maxrefdes1015-schematic PDF 136KB 2017-11-03
build_bom_max5971_maxrefdes1015_apps_p1 PDF 220KB 2018-01-30
Date Type
2017-11-03

maxrefdes1015-assembly-top

(PDF, 678KB)

2017-11-03

maxrefdes1015-pcb

(PDF, 1MB)

2017-11-03

maxrefdes1015-schematic

(PDF, 136KB)

2018-01-30

build_bom_max5971_maxrefdes1015_apps_p1

(PDF, 220KB)

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