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PDF AG8100 Data sheet ( Hoja de datos )
| Número de pieza | AG8100 | |
| Descripción | Power-Over-Ethernet Module | |
| Fabricantes | Silver | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AG8100 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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Silver
TELECOM
Pb
V1.0 Dec 2006
Data Sheet
Ag8100
Power-Over-Ethernet Module
1. Features
¾ IEEE802.3af compliant
¾ Small surface mount package size –
32mm (L) x 18mm (W) x 11.5mm (H)
¾ High efficiency DC/DC converter
¾ Input voltage range 37V to 57V
¾ Overload and short-circuit protection
¾ Adjustable Output - 3 product
variants cover all voltages from 2.5V
to 14V
¾ Thermal Cut Off
¾ Silver Telecom “design-in” assistance
2. Description
The Ag8100 series of modules are designed to extract power from a conventional twisted pair
Category 5 Ethernet cable, conforming to the IEEE 802.3af Power-over-Ethernet (PoE)
standard.
The Ag8100 signature and control circuit provides the PoE compatibility signature and power
classification required by the Power Sourcing Equipment (PSE) before applying up to 15W
power to the port. The Ag8100 is compatible with Class 0 to Class 3 equipment.
The high efficiency DC/DC converter operates over a wide input voltage range and provides a
non-isolated regulated low ripple and low noise output. The DC/DC converter also has built-in
output overload, output short-circuit and over-temperature protection.
© Silver Telecom 2006
1 page  
V1.0 Dec 2006
Data Sheet
Ag8100
Power-Over-Ethernet Module
Silver
TELECOM
Pb
Lead free
Ag8100
1
123
(Top View)
456
12 11 10 (Bottom View) 9 8 7
Figure 2: Ag8100 SMT Package Format
© Silver Telecom 2006
5
5 Page 
V1.0 Dec 2006
Data Sheet
Ag8100
Power-Over-Ethernet Module
7. Typical Recommendations
Figure 8 gives an example of the tracking needed for the Ag8100. R1, R2 and R3 are
optional components, but C1 needs to be positioned close to the output pins of the Ag8100
as possible to minimise the current loop. The thermal performance of the Ag8100 can be
improved by increasing the surface area of the track +VDC, -VDC and Thermal Ground.
-VDC
Output
Voltage
C1
+VDC
ADJ
RA
*
Ag8100
*1
CP
RC
VIN- VIN+
Input from
Bridge Rectifiers
* Heat dissipation of the Ag8100 can be improved by increasing the surface area of the +VDC, -VDC and Thermal Ground tracks.
Figure 8: Typical Layout
8. Operating Temperature Range
Because the Ag8100 is a power component, it will generate heat, so it is important that this
be taken into consideration at the design stage.
The heart of the Ag8100 is a DC/DC converter, which like any other power supply will
generate heat. The amount of heat generated by the module will depend on the load it is
required to drive and the input voltage supplied by the PSE. The information shown within
this section of datasheet is referenced to a nominal 48Vdc input voltage supplied by the
PSE.
The Ag8100 has a maximum ambient operating temperature of 70OC see Figure 10,
Figure 11 & Figure 12. These results are in still air without any heatsinking, the
performance of the Ag8100 can be improved by forcing the airflow over the part or by
using a heatsink (see the Ag8100 application note on heatsinking for more information).
The Ag8100 has built-in thermal protection, to prevent the module from being damaged if
operated beyond its power / temperature specification. If the thermal protection circuit is
activated then the DC/DC converter will shut down and will remain off until the input
voltage is removed and reapplied. In shut down mode the Ag8100 input current will be less
than 5mA, which is below the PSE output hold current. The PSE will assume that the
Ag8100 has been disconnected and will switch its output off and will return to testing for a
© Silver Telecom 2006
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet AG8100.PDF ] | |
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