SI3480MS8-KIT Silicon Laboratories Inc, SI3480MS8-KIT Datasheet

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SI3480MS8-KIT

Manufacturer Part Number
SI3480MS8-KIT
Description
KIT EVAL 8PORT SI3480/52/SI3500
Manufacturer
Silicon Laboratories Inc
Datasheets

Specifications of SI3480MS8-KIT

Main Purpose
*
Embedded
*
Utilized Ic / Part
*
Primary Attributes
*
Secondary Attributes
*
Product
Power Management Development Tools
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
E
MANAGEMENT CONTROLLER
1. Introduction
In Power over Ethernet (PoE) Power Sourcing Equipment (PSE), typically, not all PoE ports are connected to
loads, and the ports that are connected to loads draw substantially less than the maximum power defined in the
IEEE standard (30 W). For this reason, it is normal to use a power supply that is not capable of supplying full power
to all ports and to add a system-level power management function to deal with the rare situations in which the
system power supply becomes overloaded by selectively not granting power or by turning off ports in priority order.
In these situations, the system user can redistribute loads, add a larger power supply, or add more PSE systems as
needed.
The Si3480 works with the Si3452 PoE controllers and implements power management to enable the use of
smaller, lower-cost, and more efficiently-utilized power supplies in unmanaged PSE systems with up to eight ports.
The Si3480 also supports LED indication of port status and power supply consumption.
The Si3480MS8 evaluation board contains the Si3480 power manager, two Si3452 PoE controllers, a –50 V to
+3.3 V dc-to-dc converter based on an Si3500, status LEDs, and Ethernet coupling circuitry.
For demonstration purposes, Class 3 and Class 4 Powered Device (PD) loads are supplied with the evaluation
system. Various load resistors (also supplied) can be used to simulate normal and overload conditions.
2. Evaluation Board Overview
Figure 1 shows a photo of the evaluation board with highlights of the major functional blocks.
The PoE coupling circuit and Ethernet connectors are arranged as a “mid-span” power injector. Ethernet without
power is connected to the top row of connectors, and Ethernet with power injected is connected to the bottom row
of connectors. J300 is for the four ports connected to U1, and J301 is for the four ports connected to U2. If only the
PSE function is being evaluated, only the bottom row of connectors needs to be used. Table 1 lists the contents of
the Si3480MS8 evaluation kit.
Rev. 0.2 10/10
VALUATION
Si3402ISO-C4-EVB
Si3402ISO-EVB
Part Number
Si3480-EVB
K
Quantity
IT
Table 1. Si3480MS8 Evaluation Kit Contents
1
2
1
3
3
U
Copyright © 2010 by Silicon Laboratories
SER
The Si3480 evaluation board shown in Figure 1.
A powered device with Class 3 signature (15.4 W maximum).
A powered device with Class 4 signature (30 W maximum).
Ethernet cables for connecting the powered devices.
Load board with three 5  loads. Each resistor that is connected will
draw about 6.5 W of input power from the PSE.
S
G
UIDE FOR TH E
S i 3 4 8 0 M S 8 - K I T
Description
Si3480
POWER
Si3480MS8-KIT

Related parts for SI3480MS8-KIT

SI3480MS8-KIT Summary of contents

Page 1

... A powered device with Class 3 signature (15.4 W maximum). A powered device with Class 4 signature (30 W maximum). Ethernet cables for connecting the powered devices. Load board with three 5  loads. Each resistor that is connected will draw about 6 input power from the PSE. Copyright © 2010 by Silicon Laboratories Si3480 POWER Si3480MS8-KIT ...

Page 2

... Si3480MS8-KIT J1 Si3480 Programming JP1 Power Meter Port 1 Port 2 Port 3 Figure 1. Si3480 Evaluation Board Functional Blocks 2 Si3500 – 3 Converter Si3452 Controllers Port Status LEDs PoE Coupling Circuit RJ45 Connectors Port 4 Port 5 Rev. 0.2 Power Port 6 Port 7 Port 8 ...

Page 3

... V Table 2. Possible Jumper Settings J1 = 3.3 V) System Power PoE+ Enable 0 No ports PoE+ 13 Ports 1,2 53.3 W 66.7 W Ports 1– Rev. 0.2 Si3480MS8-KIT J2 J3 Port Priority All same Port 1 Port 1 high priority Ports 1,2 high priority Ports 1–3 high priority 3 ...

Page 4

... Si3480MS8-KIT Table 2. Possible Jumper Settings (Continued) Jumper Pin Voltage ( system where the voltage at the pin will be fixed, the jumper arrangement can be replaced with a simple resistor divider. The A/D reference voltage for the Si3480 is V the ratio of resistors. ...

Page 5

... Si3452 controllers report a power supply undervoltage. 3.4. Demonstration Using the Supplied Loads The Si3480MS8-KIT ships with three powered devices based on the Si3402 with loads for up to approximately input power. The loads are arranged as one to three 5  resistors, which draw 5 W each at the PD output voltage ...

Page 6

... Si3480MS8-KIT Thus: Number of LEDs System Overload Step 2: Apply the –50 V Power. Observe the power up LED sequence of one second at each step: 1. All LEDs 2. Port 1 LED and eight power meter LEDs to indicate two Si3452 port controllers found by the Si3480 3. Port 2 LED and two power meter LEDs to indicate the provided power is between 25 and ...

Page 7

... PoE+ on one port and is not expected to have PDs on all ports. By using a higher power supply and setting the jumpers appropriately, the evaluation system can be used for higher power applications. As the available power is increased, it becomes increasingly difficult to create a system-level overload. Si3480MS8-KIT Rev. 0.2 7 ...

Page 8

... Si3480MS8-KIT 4. Detailed Schematics, BOM, and Layout The following figures show the detailed schematics, bill of materials, and layout for the Si3480 evaluation board. 4.1. Schematics -52V +3V3 -52V_RTN +3V3 +3V3_RTN +3V3 GND 2 VDD 3 8 +3V3 +3V3 -52V -52V -52V LED_4_8 LED_3_7 LED_2_6 ...

Page 9

... R8 10K 10K R7 R7 10K R6 10K R6 10K R5 10K R5 VDD 30 +3V3 VDD 19 -52V 10K R4 10K R4 10K R3 10K R3 10K 10K R2 R2 10K 10K R1 R1 Si3480MS8-KIT -52V GND12 35 GND34 15 VEE -52V 2 VEE EPAD AGND 8 DGND 29 -52V GND12 35 GND34 15 VEE -52V 2 VEE EPAD AGND 8 DGND 29 Rev. 0.2 ...

Page 10

... Si3480MS8-KIT +3V3 +3V3 +3V3 10 30.1K R153 30.1K R153 EPAD VSS2 RDET 19 6 SWO HSO 18 7 VSS1 Vposs Vneg 16 9 Vssa Rev. 0.2 -52V ...

Page 11

... MX2+ MX2+ 0.1uF 0.1uF H5 G5 MX2- MX2- 0.1uF 0.1uF H7 G7 MX3+ MX3+ 0.1uF 0.1uF H8 G8 MX3- MX3- RJ-45 RJ-45 RJ-45 RJ-45 Rev. 0.2 Si3480MS8-KIT J301B J301B B1 MX0+ B2 MX0- B3 MX1+ B6 MX1- C304 C304 B4 MX2+ C305 C305 B5 MX2- C306 C306 B7 MX3+ C307 C307 ...

Page 12

... Si3480MS8-KIT System Power 3.3V R200 R200 10K 10K R201 R201 20.0K 20. R202 R202 40.2K 40. R203 R203 80.6K 80.6K 11 HEADER 4x3 HEADER 4x3 GND 0 Bank LED_1_5 100 100 LED_2_6 100 100 LED_3_7 100 100 LED_4_8 100 100 12 PoE+ enable 3.3V R210 R210 ...

Page 13

... ESR ±20% C0805 ±10% C0603 ±10% C0603 ±10% C0603 ±10% C0603 ±20% C1210 20 mA LED-S-GW-AK RED 20 mA LED-S-GW-KA Rev. 0.2 Si3480MS8-KIT Mfr Part Number Mfr 151-207-RC Kobiconn 151-201-RC Kobiconn C0603X7R160-104M Venkel C0603X7R101-104M Venkel C0805X7R160-105M Venkel ECA2AM330 Panasonic C0603X5R6R3-106M Venkel C1210X7R101-105K Venkel ...

Page 14

... Si3480MS8-KIT Table 6. Si3480-EVB Bill of Materials (Continued) Item NI Qty Ref Value 16 1 D100 MBRS3100T3 17 1 D301 MBRS1100 18 1 FB151 19 1 JP1 HEADER 1x3 20 3 J1, J2, J3 HEADER 4x3 J4, J5 DF9-17S-1V 5X2 Shrouded Header CONN TRBLK 23 1 J101 24 2 J300, J301 RJ- L151 33 µH L300, L301, ...

Page 15

... W ±1% R0603 1/10 W ±1% R0603 1/16 W ±1% R0603 SW-PB-MOM VIA-TP VIA-EPAD TESTPOINT QFN40N6X6P0.5 TLV431-DBZ QFN20N4X4P0.5 QFN20N5X5P0.8 Rev. 0.2 Si3480MS8-KIT Mfr Part Number Mfr CR0603-16W-1002F Venkel CR0603-16W-2002F Venkel CR0603-10W-4022F Venkel CR0603-16W-8062F Venkel Mountain 101-0161-EV Switch N/A N/A N/A N/A 151-203-RC Kobiconn ...

Page 16

... Si3480MS8-KIT 4.3. Layout 16 Rev. 0.2 ...

Page 17

... Si3480MS8-KIT Rev. 0.2 17 ...

Page 18

... Si3480MS8-KIT 18 Rev. 0.2 ...

Page 19

... Si3480MS8-KIT Rev. 0.2 19 ...

Page 20

... Si3480MS8-KIT 20 Rev. 0.2 ...

Page 21

... OCUMENT HANGE IST Revision 0.1 to Revision 0.2  Changed document name from Si3480MS8-EVB to Si3480MS8-KIT to reflect the evaluation kit name change. Si3480MS8-KIT Rev. 0.2 21 ...

Page 22

... Si3480MS8-KIT C I ONTACT NFORMATION Silicon Laboratories Inc. 400 West Cesar Chavez Austin, TX 78701 Tel: 1+(512) 416-8500 Fax: 1+(512) 416-9669 Toll Free: 1+(877) 444-3032 Please visit the Silicon Labs Technical Support web page: https://www.silabs.com/support/pages/contacttechnicalsupport.aspx and register to submit a technical support request. The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice. ...

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