12 V @ 1 A Isolated Flyback Converter for Power-Over-Ethernet PD Applications Status: PREVIEW

Product Information

Description

The TPS23750 integrates the functionality of the TPS2375 PoE PD controller with a primary-side DC/DC PWM controller. The designer can create a front-end solution for PoE PD applications with a minimum of external components. The PoE front-end has all the necessary IEEE802.3af functions including detection, classification, UVLO and inrush control. The PoE input switch is integrated within the TPS23750. The DC/DC controller section is designed to support flyback, forward and non-synchronous low-side switch-buck topologies.

This circuit uses the TPS23750 to implement an isolated flyback converter. PoE applications such as security cameras require a 12 V rail. Since the input to the PD is limited to 12.95 W by IEEE802.3af, synchronous rectification is used to reduce losses, providing maximum power at the output. The output of this converter can be scaled to provide lower voltages, such as 3.3 V or 5 V.

What's Included

• SLUR023,TPS23750PWP Bill of Materials
• SLUR024,TPS23750PWP Schematic
• SLUL035,TPS23750PWP Test Report