Copyright © 2015
Microsemi
Page 3 of 26
Rev. 2.0, 29-June-16
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– PoE BU
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PD70211EVB50FW-5
50W Isolated Forward Converter PD
Evaluation Board
2
Introduction
Microsemi’s PD70211ILQ device is part of a family of devices which are targeted for realizing the 802.3at standard
PD interface.
The PD interface family of devices includes the following:
Device type
Power capability
Integrates PWM
controller
PD70100
IEEE802.3at Type 1
(IEEE802.3 af level)
No
PD70101
IEEE802.3at Type 1
(IEEE802.3 af level)
Yes
PD70200
IEEE802.3at Type 2
No
PD70201
IEEE802.3at Type 2
Yes
PD70210(A)
2 x IEEE802.3at Type 2 (4 pair)
HDBaseT (95W)
No
PD70211
2 x IEEE802.3at Type 2 (4 pair)
HDBaseT (95W)
Yes
Microsemi’s PD70211EVB50FW Evaluation Board (see
Figure
2
) provides designers with an environment needed for evaluating the performance and implementation of
PD applications based on PD70211 controller.
The board is using a single PD controller, PD70211ILQ, to support the Detection, Class, and Power Supplying
phases on the 4 Pairs of the Cat5 cable. The board supports sync detection of the 4 pairs. PD70211ILQ supports
the current of the HDBaseT over 4 Pairs, which is more than twice the power of a standard IEEE802.3AT Type 2
interface.
All necessary steps and connection instructions required to install and operate this board are provided within this
document.
PD70211 Based
Vin to 24V
Flyback DCDC
Module
RJ45 Data +
Power
Combined RJ45 &
Pulse Transformer
Vout
Conn
PD70224
Active
Mosfet
Bridges
Vin
Combined
Vin
5V
PD70211 Based
Vin to 5V
Forward DCDC
Module
48V Wall
Adapter
Wall
Adapter
Detection
Data
Output
Figure 1: PD70211EVB50FW-5 Block Diagram
