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參數(shù)資料
| 型號： | QPI-1L |
| 廠商： | Vicor Corporation |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 12 Amp Active EMI Filter for 48V DC Bus |
| 中文描述： | 12安培有源EMI濾波器的48V直流總線 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 238K |
| 代理商： | QPI-1L |
Figure 6 –
Recommended schematic for QPI. Values of C
IN
and C1-C4 should be the values recommended by the converter manufacturer.
If the manufacturer does not specify a value for the Y-capacitors use 4.7nF. Ry=10
, 1/4 W.
Part Number
Description
QPI-1L
QPI-1 Land Grid Array
Ordering Information
BUS+
QPI+
BUS-
QPI-
S
BUS
SUPPLY
QPI
V
IN
+
V
OUT
+
V
IN
-
V
OUT
-
SHIELD
CONVERTER
Optional Connection
C1
C2
C3
C4
RY
PCB plane under converter
C
IN
CB
47
μ
F
Picor Corporation www.picorpower.com
QPI-1L Data Sheet Rev. 2.0 Page 4 of 8
If higher attenuation is required, QPIs can be
connected in series.
Figure 8
shows the proper
schematic for QPIs in series. Note that only one RY is
required in this configuration.
The QPI can also be used to filter embedded or “down”
converters made up of discrete components. Where
ever possible a Shield Plane and Y-capacitor decoupling
should be included in the embedded converter design.
Follow the circuit and layout recommendations for a
brick converter shown in
Figures 7, 9 & 10
.
Thermal Considerations
The current derating curve shown in
Figure 5
should be
used when the PCB temperature in close proximity of
the QPI-1 exceeds 60°C. For example, the QPI-1 will
support up to 10 A of current or 480 W from a 48 Vdc
bus at an 80°C interface temperature. Temperature
should be measured at the PCB interface to the QPI-1
on the Bus +/- pads or the QPI+/- pads. Refer to
Figures
9, 10 & 12
for PCB layout recommendation.
0
10
20
30
40
50
60
70
80
90
100
PCB to QPI Interface Temperature (Deg. C)
Q
14
12
10
8
6
4
2
0
Figure 5 –
QPI-1 current derating curve.
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