Silicon Laboratories Si3452MS8, User Manual

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Rev. 0.6 5/12 Copyright © 2012 by Silicon Laboratories Si3452MS8-EVB
S i 3 4 5 2 M S 8 - K I T
S i 3 4 5 2 M S 8 E
V A L U A T I O N
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1. Introduction
The Si3452MS8 8-port evaluation kit (Si3452MS8-KIT) is intended for Power over Ethernet (PoE) Power Sourcing
Equipment (PSE) system designers interested in evaluating the Quad-port Si3452 PSE controller. While evaluation
kits are normally shipped with Si3452 devices that use Silicon Laboratories’ proprietary dV/dt™ disconnect, they
can also be used for evaluation of the pin-compatible Si3453, which uses dc disconnect. In this case, the Si3452
devices must be replaced with the appropriate Si3453 device. Please refer to "8. Ordering Guide" on page 35 for
more information.
The Si3452 is controlled through an I
2
C (or SMBus) interface. For convenience in evaluation, a graphical user
interface (GUI) is provided, giving an easy-to-use visual display and control of the Si3452 I
2
C registers. The
evaluation kit assumes the user has access to a PC to control the evaluation board with the provided GUI.
The user is also responsible for providing an appropriate high-voltage power supply. The power supply should be
45 to 57 V for normal PoE or 51 to 57 V for PoE+. The Si3452 can supply over 30 W to each port. Thus, the two
Si3452 controllers for the eight port demo system can provide over 240 W of total power. Normally, a 50 to 100 W
power supply is used. While the classification and actual current consumption of each port is available, the demo
GUI does not implement system-level power management. Contact Silicon Laboratories for more information about
system-level power management options.
The Si3452MS8 kit has been thoroughly tested for standards compliance and interoperability. Contact Silicon
Laboratories for test reports using Sifos PoE test equipment and University of New Hampshire PoE standards
compliance and interoperability reports.