Advertisement
Quick Links
S i 3 4 8 2 S m a r t P S E - 2 4 U G
Si3482 S
P S E - 2 4 K
U
'
G
M A R T
IT
SER
S
UIDE
1. Introduction
The Si3482 power management controller works with Si3452 PSE controllers and enables the use of a smaller,
lower-cost, and more efficiently-utilized power supplies in managed or unmanaged Power over Ethernet (PoE)
Power Sourcing Equipment (PSE) with up to 48 ports and up to three parallel power supplies. The Smart PSE-24
kit demonstrates the use of the Si3482 in a 24-port system. Figure 1 shows the assembled kit.
Figure 1. Smart PSE-24 Kit
Rev. 0.2 10/10
Copyright © 2010 by Silicon Laboratories
Si3482 Smart PSE-24 UG
Advertisement
Related Manuals for Silicon Laboratories Si3482 SMART PSE-24 KIT
Summary of Contents for Silicon Laboratories Si3482 SMART PSE-24 KIT
- Page 1 Power Sourcing Equipment (PSE) with up to 48 ports and up to three parallel power supplies. The Smart PSE-24 kit demonstrates the use of the Si3482 in a 24-port system. Figure 1 shows the assembled kit. Figure 1. Smart PSE-24 Kit Rev. 0.2 10/10 Copyright © 2010 by Silicon Laboratories Si3482 Smart PSE-24 UG...
-
Page 2: Hardware Configuration
Si 34 82 S mart PSE- 24 UG 2. Smart PSE-24 Kit Contents Table 1 lists the contents of the PSE-24 kit. Table 1. PSE-24 Kit Contents The SmartPSE24-RD, which includes the Si3482, six Si3452 PoE controllers, a –50 V to +3.3 V dc-to-dc converter based on a Si3500, isolation for UART communications, and an alternative SPI interface (the SPI interface is not isolated). - Page 3 Si3482 Smart PSE-24 UG 3.2. Installing the PoE USB Adapter Note: Before the PoE USB adapter is plugged in, the device driver should be installed. To install the PoE USB adapter drivers, run PoEUSBSetup.exe from the supplied disk, and follow the instructions including accepting the end user license agreement.
- Page 4 Si 34 82 S mart PSE- 24 UG Figure 3. Initial Status Screen The Si3482 Smart Power 24 kit ships with three powered devices based on the Si3402 with loads for up to approximately 19.5 W of input power. The loads are arranged as one to three 5 resistors, which draw 5 W each at the PD output voltage of 5 V.
- Page 5 Si3482 Smart PSE-24 UG Since sufficient power is available, both ports are granted power. Because Port 2 was not enabled as PoE+, the Class 4 PD is only granted 15.4 W. Step 2: Disconnect the PDs from Step 1, and connect the Class 4 PD to Port 1 and Class 3 PDs to each of Ports 2 and 3.
- Page 6 Si 34 82 S mart PSE- 24 UG Figure 6. Status Screen after an Overload on Port 3 To reset the port, decrease the load back to one resistor; unplug the PD, and plug it back in. This demonstrates “retry after reconnect”.
- Page 7 Si3482 Smart PSE-24 UG Connect the Class 4 PD with three resistors (19.5 W) to Port 1. Port 1 is granted power, and a system-level overload is created with approximately 45.5 W. Either Port 3 or Ports 2 and 3 will be turned off depending on whether the Si3480 reported a severe overload (>44 W).
- Page 8 Si 34 82 S mart PSE- 24 UG 4.2. Schematics The following figures show the detailed schematics, BOM, and layout for the Si3482evaluation board. Rev. 0.2...
- Page 9 Si3482 Smart PSE-24 UG Rev. 0.2...
- Page 10 Si 34 82 S mart PSE- 24 UG Rev. 0.2...
- Page 11 Si3482 Smart PSE-24 UG Rev. 0.2...
- Page 12 Si 34 82 S mart PSE- 24 UG Rev. 0.2...
- Page 13 Si3482 Smart PSE-24 UG Rev. 0.2...
-
Page 14: Bill Of Materials
Si 34 82 S mart PSE- 24 UG 4.3. Bill of Materials Table 3. Si3482 Smart PSE-24 Bill of Materials Item Value Rating PCB Footprint Mfr Part # C5,C6,C7,C8 1 µF ±20% C0805 C0805X7R160-105M Venkel C100,C101,C102, C103,C107,C109, C111,C114,C150, C200,C201,C202, C203,C207,C209, C211,C214,C300, C301,C302,C303, C307,C309,C311,... - Page 15 Si3482 Smart PSE-24 UG Table 3. Si3482 Smart PSE-24 Bill of Materials (Continued) Item Value Rating PCB Footprint Mfr Part # J816 HEADER 8x2 CONN2X8 TSW-108-07-S-D Samtec J817 HEADER 5x2 CONN2X5 TSW-105-07-T-D Samtec L151 33 µH 0.4 A ±20% IND-LPS4018 LPS4018-333ML Coilcraft MMBT3904...
- Page 16 Si 34 82 S mart PSE- 24 UG 4.4. Silkscreens Rev. 0.2...
- Page 17 Si3482 Smart PSE-24 UG Rev. 0.2...
- Page 18 Si 34 82 S mart PSE- 24 UG Rev. 0.2...
- Page 19 Si3482 Smart PSE-24 UG Rev. 0.2...
- Page 20 Si 34 82 S mart PSE- 24 UG Rev. 0.2...
-
Page 21: Document Change List
Si3482 Smart PSE-24 UG OCUMENT HANGE Revision 0.1 to Revision 0.2 Added "Easing Software Development with the Serial Packet Protocol SDK‚" on page 7 to describe availability of the Serial Packet Protocol SDK. Rev. 0.2... -
Page 22: Contact Information
Silicon Laboratories products are not designed, intended, or authorized for use in applications intended to support or sustain life, or for any other application in which the failure of the Silicon Laboratories product could create a situation where per- sonal injury or death may occur.
Need help?
Do you have a question about the Si3482 SMART PSE-24 KIT and is the answer not in the manual?
Questions and answers