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參數(shù)資料
| 型號： | AG8000 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Power-Over-Ethernet Module |
| 中文描述： | 供電以太網(wǎng)模塊 |
| 文件頁數(shù)： | 10/14頁 |
| 文件大?。?/td> | 221K |
| 代理商： | AG8000 |
V1.3 July 2006
Data Sheet
Ag8000
Power-Over-Ethernet Module
7. Typical Recommendations
Figure 8: Typical Layout gives an example of the tracking needed for the Ag8000. R1, R2
and R3 are optional components, but C1 needs to be positioned close to the output pins of
the Ag8000 as possible to minimise the current loop. The thermal performance of the
Ag8000 can be improved by increasing the surface area of the output tracks (+VDC and -
VDC) this is not applicable if the Ag8000 is in a socket.
Output
Voltage
VA & VB
Inputs
R2
_
R1
R3
+
ADJ
CLASS
C1
Ag8000-S
1
*
*
* Heat dissipation of the Ag8000 can be improved by increasing the surface area of the +VDC and GND output tracks.
Figure 8: Typical Layout
8. Operating Temperature Range
Because the Ag8000 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 Ag8000 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 Ag8000 has a maximum ambient operating temperature of 70
O
C see Figure 10,
Figure 11 & Figure 12. These results are in still air without any heatsinking, the
performance of the Ag8000 can be improved by forcing the airflow over the part or by
using a heatsink (see the Ag8000 application note on heatsinking for more information).
The output stage of the Ag8000 has a built-in thermal protection circuit, to prevent the
module from being damaged if operated beyond its power / temperature specification.
Because each application is different it is impossible to give fixed and absolute thermal
recommendations. However it is important that any enclosure used has sufficient
ventilation for the Ag8000 and a direct airflow if possible.
Silver Telecom 2006
10
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