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


The STEVAL-POE005V1 reference design represents a 3.3 Volt at 20 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.


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
Design Author STMicroelectronics
Application / Target Market PoE, Power Over Ethernet
Main I.C. Base Part PM8804
Date Created By Author 2019-05
Date Added To Library 2019-06

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