SMSA2805S データシートの表示（PDF） - Crane Aerospace and Electronics.
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SMSA2805S Datasheet PDF : 14 Pages
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Crane Aerospace & Electronics Power Solutions
SMSA Single and Dual DC/DC Converters
28 Volt input – 5 Watt - Pending Revision F Release
Positive
Input 6
SMSA
5kV
12 k V
Inhibit 5 400 V
200 pF
10 K
2N3904
3.9 K
7
Input
Common
10 k V
Figure 3: Inhibit Interface
50 k V
Vcc
Typically 1.5 V
when inhibited
EMI Filter
SMSA2815S
From input
power source
Positive
Input
Input
Common
Positive
Output
Case
Output
Common
Positive
Input
Positive
Output
Output Common
Input
Common
T1
C2
Case
C1
+ C3 To Load
T1
Figure 4: Low Noise Output Filter for SMSA Single Output Model
emi Filter
smsa2815d
From input
power source
Positive
input
input
Common
Positive
output
Case
output
Common
Positive
input
Positive
output
output Common
input
Common
negative
output
T1
C2
C4
Case
C1
+
C3
+ C5
To loads
T1
Figure 5: Low Noise Output Filter for SMSA Dual Output Model
The filter suggestions in Figures 4 and 5 will further reduce the output ripple for systems requiring very low output noise.
C1 = 0.27 µF ceramic capacitor, 500V
C2 = C4 = 6.8 µF tantalum capacitor
C3 = C5 = 0.27 µF ceramic capacitor
Single output: T1 = 15T #28 AWG winding on toroid, µi = 5000
Dual output: T2 = 10T #28 AWG winding on toroid, µi = 5000
For best results, make interconnections as short as possible.
www.interpoint.com
Page 4 of 14
Rev F - 20090318 - Pending Revision F Release
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