Datasheet

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CUI Inc │ SERIES: PYB30-U │ DESCRIPTION: DC-DC CONVERTER date 08/18/2014 │ page 5 of 7
Recommended external circuit components
Vin (Vdc) 24 48
FUSE Choose according to input current
MOV 10D560K 10D101K
LDM 56μH 56μH
TVS SMCJ48A SMCJ90A
C0 120μF/50V 120μF/100V
C1 4.7μF/50V 2.2μF/100V
LCM 2.2mH 2.2mH
C2 4.7μF/50V 2.2μF/100V
C3
*
1nF/2kV 1nF/2kV
C4
*
1nF/2kV 1nF/2kV
EMC RECOMMENDED CIRCUIT
DERATING CURVES
Vin
GND
+Vo
-Vo
EUT
LOAD
C2
LCM
E
C0
TVS
LDM
MOV
FUSE
D
C1
C4
Vin
GND
C3
LOAD
0V
Vin
GND
+Vo
0V
EUT LOAD
C2
LCM
E
C0
TVS
LDM
MOV
FUSE
D
C1
C4
Vin
GND
C3
Vin
GND
+Vo2
-Vo2
EUT
LOAD
C2
LCM
E
C0
TVS
LDM
MOV
FUSE
D
C1
C4
Vin
GND
C3
LOAD
0V
+Vo1
LOAD
Single Output
Dual Output
Triple Output
Figure 1
Figure 2
Table 1
Table 2
TEST CONFIGURATION
DC
Cin
Lin
DC
Load
Oscilloscope
Current
Probe
Note: Input reected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
External components
Lin 4.7μH
Cin
220μF, ESR < 1.0Ω
at 100 kHz
Temperature Derating Curve
100
80
60
40
20
Ambient Temperature (°C)
Load (%)
-40-20 02040
8570
60
Safe operating area
Without heatsink
Wi
th heatsink
Note: *2nF/2kV capacitors for triple output, 48 Vdc input
models.
For more information, please visit the product page.