SI3461-KIT Silicon Laboratories Inc, SI3461-KIT Datasheet - Page 3

• Manufacturer Part Number: SI3461-KIT
• Description: BOARD EVAL FOR SI3461
• Manufacturer: Silicon Laboratories Inc
• Type: Controllers & Processorsr

Specifications of SI3461-KIT

• Main Purpose: Special Purpose DC/DC, Power Over Ethernet
• Board Type: Fully Populated
• Utilized Ic / Part: Si3461
• Ethernet Connection Type: 10/100 Base-T, IEEE 802.3
• Interface Type: Ethernet
• Operating Voltage: 12 V to 15 V
• Operating Current: 10 mA
• Product: Modules
• For Use With/related Products: Si3460
• Lead Free Status / RoHS Status: Lead free / RoHS non-compliant
• Current - Output: -
• Voltage - Output: -
• Voltage - Input: -
• Power - Output: -
• Frequency - Switching: -
• Outputs And Type: -
• Regulator Topology: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1843

4. Quick Check of the Si3461 Evaluation Board
The only items needed to operate the Si3461 are an isolated 50 V power supply and connection cables (the
Si3461-EVB comes with the optional onboard 3.3 V shunt regulator).
For a quick check of the board, perform the following steps:
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Ensure that the configuration DIP switch settings are in line with the powered device (PD) to be used (refer to
"6.1. Initialization and Operating Mode Configuration" on page 7). Alternatively, for the purpose of this quick
check, use the settings shown in Figure 3.
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Connect the 50 V power supply to the banana inputs observing the correct polarity (a series diode protects the
board from damage in case of polarity reversal).
Switch on the 50 V power supply. The status LED should flash at a 1.5 Hz rate signaling that the Si3461 is
trying to detect a PD.
Connect a PD to the PoE labeled RJ-45 connector. After a short time, power should be applied to the PD, and
the status LED should turn continuously on. If the PD requests more power than the Si3461-EVB is configured
for, power will be denied, or, if once powered and an overload condition occurs, power will be shut down, and
the status LED will flash rapidly. Depending on initial configuration, the device may then automatically start
detection after 2.2 seconds or wait until the Ethernet cable is removed (and plugged in again).
30 W of available power
Midspan configuration
Automatic retry
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Figure 3. DIP Switch Settings
Rev. 0.5
Si3461-EVB
3