STMicroelectronics PM8805 | Demoboard STEVAL-POEL45W1

Description

The STEVAL–POEL45W1 is a PoE-enabled constant current LED driver with a PM8805 Power over Ethernet interface, LED6000 LED driver and Bluetooth module SPBTLE-1S for smart dimming control.The PM8805 is a highly integrated device, embedding a double active bridge, a hotswap MOSFET and an IEEE802.3bt-compliant Powered Device (PD) PoE interface.The LED6000 is a step-down monolithic switching regulator designed to source up to 3 ADC current for high power LED driving. The 250 mV typical RSENSE voltage drop enhances the efficiency. Digital dimming is implemented by driving the dedicated DIMpin.The SPBTLE-1S is a Bluetooth® low Energy System-on-Chip application processor certified module, compliant with BT specifications v4.2 and BQE qualified.The STEVAL–POEL45W1 evaluation board is designed to provide a power output of 48 W and can dim LEDs down to 1% of the maximum brightness without any flicker. Remote on/off and dimming control can be managed through the PoE Lighting android application available free of charge on the Google Play store.

Features

• PoE-PD IEEE 802.3af/at/bt compliant
• Constant current output, working in buck topology
• Output Current – 1.4 A with < 0.05% current regulation
• Number of LEDs connected at output: 6 – 11 White LEDs (3.3 V each)
• LED driver input voltage range 37 – 57 VDC
• Peak Efficiency at maximum load > 95%
• Standby power consumption of LED driver < 100 mW
• Comprehensive set of protections:
  • open/no-load circuit protection-short/overload circuit protection
• Wireless On/Off and dimming control
• PoE Lighting android application available on Google Play store
• LED dimming technique:
• Digital dimming with 1% resolution
• RoHS compliant
• WEEE compliant

Typical applications

• PoE lighting systems
• High power 4-pair powered devices
• Outdoor security cameras / High power pay systems / WLAN access points / IoT applications

More information

• Datasheet
• IC product information