Microsemi Proprietary and Confidential. PD70201EVB-U-25F-5 User Guide Revision 1.0
2
Isolated Flyback Converter Evaluation Board
2
Product Overview
This document provides the description and operating procedures for Microsemi's reduced size 5V 25W
board PD70201EVB-25F-D-5. This board type is used for evaluating the performance of the PD70201
device, which contains both the standard 802.3at PD application interface, and a PWM controller.
Microsemi’s PD70201 device is part of a family of devices that support the IEEE 802.3af, 802.3at and
HDBT standards PD interface.
The PD interface includes the following family of devices.
Table 1
•
PD Family of Devices
Device type
Power Capability
Integrates PWM Controller
WA Priority
PD70100
IEEE 802.3at Type 1 (IEEE 802.3 af level)
No
No
PD70101
IEEE 802.3at Type 1 (IEEE 802.3 af level)
Yes
No
PD70200
IEEE 802.3at Type 2
No
No
PD70201
IEEE 802.3at Type 2
Yes
No
PD70210
IEEE 802.3at Type 2
No
No
PD70210A
IEEE 802.3at Type 2
No
Yes
PD70211
IEEE 802.3at Type 2, HDBT
Yes
Yes
PD70224
IEEE 802.3at Type 2, HDBT
No
Yes
Microsemi’s PD70201EVB-25F-D-5 Evaluation Board provides designers with the environment needed
for evaluating the performance and implementation of PD applications based on the PD70201 device.
The board uses a single PD device (PD70201ILQ) to support the Detection, Classification, and Powering
phases on the 2/4 pairs of the Cat5 cable. PD70201ILQ supports a standard IEEE802.3at Type 2
interface as well as wide range non-standard input voltages.
This document provides all necessary procedures and instructions to install and operate this board.
Figure 1
•
PD70201EVB-25F-D-5 Block Diagram
The board can be powered either by a PSE or a lab supply through RJ45 connector- see
for the input voltage range. The external load is connected
to evaluation board using output connector (J1) - refer to
evaluation board picture (page 5)
for the
location of input and output connectors.
D9 is the AT flag indication LED, a PD70201 device output signal indicating that the device has detected
two fingers class, so the PSE side is AT level capable. This signal in the PD environment indicates that AT
power level is supported.
