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參數(shù)資料
| 型號： | KG9501 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | MIL-STD-461-C INPUT EMI FILTER for 4W up to 50W DC/DC Converters |
| 中文描述： | 符合MIL - STD - 461 - C輸入電磁干擾濾波器的4瓦到50瓦直流/直流轉(zhuǎn)換器 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 1532K |
| 代理商： | KG9501 |
For locations, phone, fax, E-Mail see back cover
4
Accessories
KG9501 Series
Gaia Converter FC97-003.04/05 Revision H
4
5-1 Grounding Design
GAIA Converter recommend to use four layer boards. The
two outer layers will be used for power and ground pla-
nes, and the two inner layers for low levels signals. Where
necessary, extra planes to beef-up high current paths can
be added on the inner layers.
We recommend that the top layer, located closest to the
modules, be used for the ground planes and divided into
two parts as follow :
- primary ground part, divided into two sub-parts
(see KG9501 datasheet for further information)
- secondary ground parts,
Both parts must be as large as possible and spread out
over the entire surface of the board; a grid could be used
to avoid a complete copper surface.
GAIA Converter recommend the use of a decoupling
common mode noise capacitance (10nF) between primary
and secondary ground planes. If more than one module is
used, additionnal common mode noise capacitance are
recommended.
The case pin of the modules (if available) can be
connected either to primary or secondary ground plane
and a 6 sides shielding can be achieved with the PCB
ground plane.
5-2 Component and Trace Routing Design
The component placement is also a key factor between a
good result and a nightmare.
The first step in placing the component is to determine
the power flow through the board. The most popular flow
structure is from one side of the board to the other and
avoiding cross-overs.
If more than one DC/DC modules is used it is recommended
to place the modules side-by-side so that the power signals
can be easily routed avoiding croos-overs. It is also
recommended to leave 1/2 inch between each module to
avoid that radiation from power stage of one module can
affect the control stage of the adjacent module and cause
cross-talk.
The second step is to place the EMI filter (KG9501 or
other) next and as close as possible to the modules
minimizing trace lenghts to avoid antenna phenomenum
and minimize loop areas and straight inductances that
can limit the effectiveness of the filter. When placing theses
components make sure to leave enough room for power
carrying traces to run through. Please consult also KG9501
datasheet for additionnal routing information.
Vin
Gin
Vout
Gout
Input
Bus
Primary Ground Plane
Secondary Ground Plane
Common
mode noise
capacitance
Primary Ground Plane
Ground
0V
28V
Ground
Plated
hole
KG9501
PGDS-50
Vin Vout
Gin Gout
5- Lay-out Recommendation
L2
L3
L1
D1
Vin
Gin
C1
C2
C3
C4
R1
R2
R3
R4
Vout
Gout
Input
Bus
Primary Ground Plane
Secondary Ground Plane
Common
mode noise
capacitance
C5
C6
Primary Ground Plane
Ground
0V
28V
Ground
Plated
hole
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