|
|
PDF AG8000 Data sheet ( Hoja de datos )
| Número de pieza | AG8000 | |
| Descripción | Power-Over-Ethernet Module | |
| Fabricantes | Silver | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AG8000 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
Silver
TELECOM
Pb
V1.3 July 2006
Data Sheet
Ag8000
Power-Over-Ethernet Module
1. Features
IEEE802.3af compliant
Small package size - 56mm (L) x
14mm (H)
Low output ripple and noise
Input voltage range 36V to 60V
Only one low cost external
decoupling capacitor required
Overload and short-circuit protection
Adjustable Output - 3 product
variants cover all voltages from 2.4V
to 13V
Thermal Cut Off
High efficiency DC/DC converter
Silver Telecom “design-in” assistance
2. Description
The Ag8000 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.
IEEE 802.3af allows for two power options for Category 5 cables and the Ag8000 series have
two pairs of power inputs pins: - VA1&2 and VB1&2 to accommodate this, see Figure 1.
The Ag8000 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 Ag8000 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  
V1.3 July 2006
Data Sheet
Ag8000
Power-Over-Ethernet Module
5. Functional Description
5.1. Inputs
The Ag8000 has two internal bridge rectifiers (see Figure 1: Block Diagram) connected to
the VA1-VA2 and the VB1-VB2 inputs. This allows the Ag8000 to be compatible with
equipment that use the different power options, see Figure 3: Typical System Diagram. It
is important that the PSE does not apply power to the VA and VB outputs at the same time
(Refer to IEEE802.3af for more information).
POWER SOURCING
EQUIPMENT (PSE)
PSE
(48V)
+
+/-
TX
4
5
1
2
RX
+/-
-
3
6
7
8
* The VA and VB inputs must not be used at the same time
POWERED DEVICE
(PD)
4
5
1
**
RX VA1 VB1
2
DC
OUTPUT
Ag8000
3
TX VA2 VB2
6 **
7
8
Figure 3: Typical System Diagram
5.2. PD Signature
When the Ag8000 is connected to the Cat 5e cable, it will automatically present a Powered
Device (PD) signature to the Power Sourcing Equipment (PSE) or Midspan Equipment,
when requested. The equipment will then recognise that a powered device is connected to
that line and supply power.
5.3. Isolation
The Ag8000 series conforms to the IEEE 802.3af standard except for the 1500V isolation,
which must be done externally. This is usually achieved without additional components,
contact Silver Telecom for further details.
© Silver Telecom 2006
5
5 Page 
V1.3 July 2006
Data Sheet
Ag8000
Power-Over-Ethernet Module
One simple method for drawing some of the heat away from the Ag8000 is shown in
Figure 9. Power planes connected to the +VDC and GND pins of the Ag8000 can be used
to draw heat away from the DC/DC converter via the output pins.
These power planes must be on the outer layers of the PCB and the Ag8000 must not be
fitted into a socket (this example is suitable for both –S and –D variants).
Power
Plane
ADJ
R2 R3
_+
1
VIAnp&utVsBCLRA1SS
Ag8000-S
Output
Voltage
Figure 9: Power Plane Heatsink for Ag8000 (-S or -D)
Figure 10, Figure 11 & Figure 12 show the maximum ambient temperature under different
load conditions. These figure have been recorded in a sealed enclosure (in still air) using a
heater element to elevate the ambient temperature (within the enclosure).
5
4
3
2
1
-20 -10 0 10 20 30 40 50 60 70
Ambient Temperaure (°C)
Figure 10: Ag8003 Operating Profile
© Silver Telecom 2006
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AG8000.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AG8000 | Power-Over-Ethernet Module | Silver |
| AG8008 | Rectifier |  AEG |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |