PYB30-U Datasheet, PDF (5/7 Pages) CUI INC – DC-DC CONVERTER

For more information, please visit the product page.
CUI Inc │ SERIES: PYB30-U │ DESCRIPTION: DC-DC CONVERTER
date 08/18/2014 │ page 5 of 7
DERATING CURVES
Temperature Derating Curve
With heatsink
100
80
Without heatsink
60
Safe operating area
40
20
-40
EMC RECOMMENDED CIRCUIT
-20
0
20
40
60 70 85
Ambient Temperature (°C)
Vin
GND
Vin
GND
Vin
GND
Figure 1
Single Output
FUSE
LDM
LCM
C3
Vin
+ Vo
MOV
TVS _C0
D
C1
E
C2
EUT
LOAD
GND
0V
C4
FU SE
Dual Output
LDM
LCM
MOV
TVS _C0
D
C1
E
C3
Vin
+ Vo
LOAD
C2
EUT _0V
GND
C4
LOAD
- Vo
Triple Output
FUSE
LDM
LCM
MOV
TVS _C0
D
C1
E
C3
Vin
+ Vo 1
+ Vo 2
LOAD
C2
EUT
0V
GND
C4
LOAD
- Vo 2
LOAD
Table 1
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
Note: *2nF/2kV capacitors for triple output, 48 Vdc input
models.
TEST CONFIGURATION
Figure 2
Oscilloscope
Lin
DC DC ^Current
Cin ^Probe
Load
Table 2
External components
Lin
4.7μH
Cin
220μF, ESR < 1.0Ω
at 100 kHz
Note:
Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
cui.com