Crane Aerospace & Electronics Power Solutions
MSA/MGA Single and Dual DC-DC Converters
28 Volt input – 5 WAtt
Positive
Input
12 k
5k
Inhibit
200 pF
10 K
3.9 K
2N3904
400
50 k
10V
Vcc
10 k
Input
Common
F
igure
2: i
nhibit
i
nterFaCe
msa
anD
mga
EMI Filter
Positive
Input
Input
Common
Positive
Positive
Input
Output
Case
Output Common
Input
Output
Common
Common
Case
C1
Positive
Output
T1
+
C2
C3 To Load
From input
power source
T1
The filter suggestions in Figure 3 and Figure 4
will further reduce the output ripple for systems
requiring very low output noise.
C1 = 0.27 µF ceramic capacitor, 500 V
C2 = C4 = 6.8 µF tantalum capacitor
C3 = C5 = 0.27 µF ceramic capacitor
Single output:
T1 = 15T #28 AWG winding on toroid, 5 m = 5000
F
igure
3: l
oW
n
oise
o
utput
F
ilter
msa
anD
mga s
ingle
o
utput
m
oDels
EMI Filter
From input
power source
Positive
Input
Positive
Output
Positive
Positive
Input
Output
Case
Output Common
Input
Common
Negative
Output
Case
C1
T2
C2+
C4+
C3
To Loads
Dual output:
T2 = 10T #28 AWG winding on toroid, 5 m = 5000
Input
Output
Common Common
C5
T2
F
igure
4: l
oW
n
oise
o
utput
F
ilter
msa
anD
mga D
ual
o
utput
m
oDels
www.craneae.com/interpoint
Page 3 of 15
MSA_MGA Rev AC - 2013.06.13
INTERPOINT [ INTERPOINT CORPORATION COMPANY ]
