STMicroelectronics STEVAL-POE002V1 PoE PD Evaluation Board

The PM8805 SoC combines two active bridges and their driving circuitry, a charge pump to drive high-side MOSFETs, a hot-swap MOSFET, and the standard single-signature IEEE 802.3bt-compliant interface. The PM8805 IEEE 802.3 interface includes detection, classification, UVLO, and inrush current limitation. The active bridges sustain up to 1.0A current and the hot-swap MOSFET is designed to safely work up to 2.0A. The device performs the IEEE 802.3bt physical layer classification scheme, providing the system with an indication of successful PSE-type.

The PM8804 is a PWM controller that integrates all the circuitry required to design a smart and efficient 48V converter for PoE and telecom mid-power applications. The this controller features a programmable oscillator for the switching frequency, adjustable slope compensation, dual complementary low-side drivers with programmable dead time, programmable soft-start, soft turn off, and a programmable current sense blanking time.