Design contains obsolete parts

STEVAL-POE005V1: 12V @ 8A, IEEE 802.3bt Power Over Ethernet (PoE)

Summary

The STEVAL-POE005V1 reference design represents a 3.3 Volt at 8 Amp Power over Ethernet converter solution, ideal for various applications including wireless access points, supplied with a PoE-PD interface and a DC-DC active clamp forward converter.

The PoE-PD interface is based on the PM8805 system in package device with two active bridges and an IEEE 802.3bt Type 4 compliant Powered Device (PD) interface. It can be used in all medium-to-high power 2P and 4P high efficiency PoE and PoE+ applications.

The DC-DC active clamp forward converter is designed around the PM8804 PWM controller, which is an integrated solution for smart and efficient 48 V converters, featuring 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.

Specifications

Manufacturer	STMicroelectronics
Category	Power Management
Sub-Category	POE - Power Over Ethernet
Eval Board Part Number	497-18493-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Normally In Stock
Compliance	IEEE 802.3bt Type 4
Outputs and Type	1 Non-Isolated
Voltage Out	12 V
Current Out	8 A
Voltage In	41.2 ~ 57 V
Efficiency @ Conditions	>93%, 48V in, 12V @ 5 ~ 8 A >92%, 42V in, 12V @ 3 ~ 8 A >91%, 56V in, 12V @ 3 ~ 8 A
Internal Switch	Yes
Features	PWM Interface Soft Start Thermal Protection
Switching Frequency	Up to 1 MHz
Component Count + Extras	190 + 97
Application / Target Market	PoE, Power Over Ethernet
Design Author	STMicroelectronics
Main I.C. Base Part	PM8804 PM8805
Date Created By Author	2019-05
Date Added To Library	2019-06