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PoE-Powered LED Lighting Reference Circuit

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Description

Block Diagram

PoE-powered LED lighting block diagram.

Applications Information

The MAX5969A receives power from the power-sourcing equipment (PSE) and provides 48V (nominal) of DC power to the MAX16832 LED driver and the MAX15062 DC-DC converter. The DC-DC converter powers the 8-bit microcontroller and the Bluetooth module. The microcontroller takes user input through the Bluetooth module and converts it to a PWM-dimming signal and feeds it to the LED driver.

The board accommodates footprints for an HM-12 BT module, a BL-600 BT module, and an ESP8266 Wi-Fi module. HM-12 control software for both Android and iOS is available. Search for “PoE LED” in the appropriate app store.

Hardware Files

Schematic
Bill of Materials (BOM)
PCB CAD files

Features

  • Proven printed circuit board (PCB) layout
  • Proven component parts list
  • Controllable with Bluetooth or Wi-Fi® module

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Designed, Built, Tested

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

 

Maxim Devices (3)

Part Number Name Product Family Order Design kits and evaluation modules
MAX5969A IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with Integrated Power MOSFET Complete System Power Protection IC Buy Now Design Kits
MAX16832 2MHz, High-Brightness LED Drivers with Integrated MOSFET and High-Side Current Sense LED Driver - LED Driver ICs Buy Now Design Kits
MAX15062 60V, 300mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters Switching Regulator - Switching Regulators Buy Now Design Kits

Maxim Devices (3)

Part Number Product Family
Complete System Power Protection IC
IEEE 802.3af/at-Compliant, Powered Device Interface Controllers with Integrated Power MOSFET
LED Driver - LED Driver ICs
2MHz, High-Brightness LED Drivers with Integrated MOSFET and High-Side Current Sense
Switching Regulator - Switching Regulators
60V, 300mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters

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