Silvertel EvalAg5800 User manual

EvalAg5800
User Manual
Rev 1.0 –May 2018
Silvertel

EvalAg5800 - User Manual
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1 Table of Contents
1Table of Contents 1
2Table of Figures 1
3Kit Contents 2
4Introduction 2
4.1 EvalAg5800.........................................................................................................2
5Evaluation Board Description for Ag5800 2
5.1 Input....................................................................................................................2
5.2 Diode Bridge Selection........................................................................................3
5.3 Input Signature and Classification....................................................................... 4
5.3.1 Powered from POH PSE 4
5.3.2 Powered from Phihong 12.5K Signature PSE 4
5.3.3 PSE Detect 4
5.4 PD Output Selection............................................................................................4
5.5 Output Adjustment...............................................................................................5
5.6 Heat Sink.............................................................................................................6
5.7 Ag5800 Information.............................................................................................6
6Set-up 6
6.1 Power Supply Input.............................................................................................6
6.2 Data Input............................................................................................................7
6.3 Link settings ........................................................................................................ 7
2 Table of Figures
Figure 1: EVALAg5800 Board Layout .............................................................................3
Figure 2: EVALAg5800 Voltage Configuration- 12V........................................................5
Figure 3: Output Adjustment ...........................................................................................6
Figure 4: Basic set-up .....................................................................................................7

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3 Kit Contents
Ag5800 Evaluation Board
Ag5800 PD Module
4 Introduction
This manual is intended to be a guide to using the “EVALAg5800 evaluation board” with
the following Silver Telecom IEEE802.3bt PD module: -
Ag5800
The board is designed to handle 10/100/1000/10GBASE-T Ethernet data rates.
4.1 EvalAg5800
The EVALAG5800 evaluation board is fitted with SilverTel’s Ag5800 IEEE802.3bt PD
module and can be used to extract power from an IEEE compliant PSE through its RJ45
connector J101.
5 Evaluation Board Description for Ag5800
5.1 Input
The EVALAG5800 evaluation board can be powered from the EVALAg6800 evaluation
board or any IEEE802.3bt PSE. Data and power input is connected through connector
J101 (see Figure 1). Data is passed through the data transformer (T100) to the data
output connector J100.

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Figure 1: EVALAg5800 Board Layout
LED 1 indicates that power is being supplied to the Ag5800. This can be disabled by
removing the jumper link LK8, removing this link does not affect the power being
delivered to the Ag5800.
5.2 Diode Bridge Selection
The EVALAg5800 on-board diode bridge rectifiers will ensure that the correct input
polarity is applied to the Ag5800 by extracting the power from the input center taps of
T100 and passing the voltage to the input of the Ag5800.
Due to the amount of power and high currents involved in the IEEE802.3bt standard we
would recommend using SMC package Schottky diodes with low reverse leakage
current to be used as diode bridges. The EvalAg5800 is fitted with SS36 Schottky
diodes configured as a diode bridge.

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5.3 Input Signature and Classification
The EVALAg5800 board will automatically direct the power from J101 to the Ag5800’s
input.
The Ag5800 provides a 25K signature required to be powered from an IEEE compliant
PSE. The EvalAg5800 has been designed to be powered from an IEEE802.3bt PSE
such as SilverTel’s Ag6800 PSE module. However the Ag5800 has also provisions for
being powered from Legacy PSE’s such as PoH or Phihongs 12.5K signature PSE.
5.3.1 Powered from POH PSE
If the EvalAg5800 is connected to a PoH (Power Over HDBaseT) PSE then by fitting a
link to LK5 will alter the classification that the Ag5800 displays allowing the PSE to send
the full amount of power to the Ag5800.
5.3.2 Powered from Phihong 12.5K Signature PSE
The Ag5800 is designed to work with Legacy PSE’s such as Phihongs
POE80U/POE60U PSE. By fitting LK7 it will connect the SA1 and SA2 signature
adjustment pins altering the Ag5800 signature to 12.5K.
For all other PSE’s these pins should be left unconnected.
5.3.3 PSE Detect
When the EVALAG5800 board is connected to a compliant IEEE PSE the Ag5800 will
detect the Type of PSE and the on board LED’s will illuminate accordingly:
For example if an IEEE802.3at (PoE+) compliant PSE such as a Phihong POE36U-
1AT-R is connected via J101 the PSE will detect Class 4 and output 2-Event
classification pulses. In turn the Ag5800 detects these pulses and activates the Type 2
detect output. This output is connected to an opto-isolator to cross the isolation barrier
and LED 7 will be illuminated.
When the EVALAG5800 board is connected to an IEEE802.3bt Type 3 compliant PSE,
the Ag5800 activates the Type 3 detect output and LED 8 will be illuminated.
When the EVALAG5800 board is connected to an IEEE802.3bt Type 4 compliant PSE,
the Ag5800 activates the Type 4 detect output and LED 9 will be illuminated.
5.4 PD Output Selection
Before using the EVALAg5800 evaluation board, it is important to setup the output
configuration for the correct output voltage.

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The Ag5800 has two DC outputs that must be connected in parallel or in series. The
outputs cannot be run independently so the EVALAg5800 board has copper pads, LK3
and LK6, which should be soldered appropriately for the selected voltage variant
required.
For parallel configuration (12V output) the bottom two pads of LK3 and bottom two pads
of LK6 should be soldered together respectively (position “12V”) as shown in Figure 2 -
VOUT1 connected to VOUT 2 and 0V 1 connected to 0V 2.
For series outputs both pads must be in position “24V” shorting the top pads of LK3 and
top pads of LK6 respectively –VOUT 1 connected to 0V 2.
The DC10 connector J4 delivers a nominal 12V when the outputs are in parallel or 24V
when the outputs are in series.
The output power from the Ag5800 is supplied to the connectors J3 to J5 (see Figure1),
where J3 provides the positive output and J5 provides the 0V return path.
LED6 will be illuminated when the Ag5800 module outputs 12V or 24Vdc.
Figure 2: EVALAg5800 Voltage Configuration- 12V
5.5 Output Adjustment
The Ag5800 has an ADJ pin, which allows the output voltage to be increased or
decreased from its nominal value.

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LK2 is connected to the ADJ pin for the PD module to either increase or decrease the
ouput voltage. When configured in 12V and the link is connected to the top and middle
pins (R2), the Ag5800 output voltage will be decreased to ~10.5V. When the link LK2 is
connected to the bottom and middle pins (R4), then the Ag5800 output voltage will be
increased to ~15V. Figure 3: Output Adjustment shows how the ADJ pin is connected.
Figure 3: Output Adjustment
5.6 Heat Sink
As the Ag5800 is a 100W power supply, thermal management is essential and is
designed to be used with a heat-sink at all times to distribute the heat away from the
board so the board can run at full operation.
A suggested heat-sink is shown in Section 10 of the Ag5800 datasheet.
5.7 Ag5800 Information
Full operating conditions and feature set can be found in the Ag5800 product datasheet,
available from www.silvertel.com.
6 Set-up
6.1 Power Supply Input
Figure 4 shows the basic set up using SilverTel’s EVALAG6800 evaluation board along
with the EVALAG5800 evaluation board with a power supply input to JP1.

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The equipment required: -
Power supply Input +57V IN e.g. Meanwell SP-240-48 available from mouser
which will give 57V
Ethernet Data Cable (CAT5e cable) Input and Output
CAT5e or CAT6 interlink cable (between EvalAg6800 and EvalAg5800)
Output power cable
Power Supply
Data
+12VJ101
J100
J4
EVALAg5800 Board Ethernet Camera
EVALAG6800 Board
CAT5e
Crossover
Cable
CAT5e
Patch
Cable
CAT5e
Patch
Cable
Data Data &
Power Ag5800
PC
57V - 3A Power Ag6800
J100
J101
J3
Figure 4: Basic set-up
6.2 Data Input
To pass data via the Evaluation boards, the data input (e.g. Internet) can be connected
to J100 on the Ag6800 Eval Board using a cat5e cable. The data is then passed
through the data transformer, where power is added and sent out via connector J101 of
the Ag6800 Eval Board. The Data and power is extracted through J100 of the
EVALAg5800 board and then divided into its separate power and data through the data
transformer. The data output is then available from J100 of the EvalAg5800 Board,
which can then be connected to your device.
6.3 Link settings
LK2 –Output adjust select
LK4 –Output power LED
LK5 –Connection for POH PSE
LK7 –Signature Adjust- 12.5K
LK8 –Input power LED circuit