STMicroelectronics Evaluation Board for PM8803 for Synchronous Flyback Converter

The STEVAL-TSP004V2 is a reference design for a PoE+, high-efficiency, 5 V/4 A flyback converter based on the PM8803 PoE controller. The PM8803 is a highly integrated device embedding a powered device (PD) interface together with a PWM controller and support for auxiliary sources.
The STEVAL-TSP004V2 reference design is based on an isolated flyback CCM converter featuring synchronous rectification with gate driver transformer.

PD interface
Works with power supplied from Ethernet LAN cables or from local auxiliary sources
Line input voltage range: 40 to 60 VDC
Output voltage: 5 VDC ± 5%
Output current: 4 A
Peak-to-peak output ripple: < 30 mV
Efficiency DC-DC full-load: > 92%
Overall peak efficiency: > 89%
Transient response ΔVOUTPK-PK to 50% load step: < 170 mV
ΔV in load line case: < 0.5%