Datasheet

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CUI Inc │ SERIES: PYB10 │ DESCRIPTION: DC-DC CONVERTER date 08/15/2013 │ page 4 of 6
Recommended external circuit components
Vin (Vdc) 24 48
FUSE Choose according to input current
MOV S14K35 S14K60
LDM1 56H56H
TVS SMCJ48A SMCJ90A
C0 330F/50V 330F/100V
C1 1F/50V 1F/100V
LDM2 4.7H 4.7H
CY1 1 nF/2 KV 1 nF/2 KV
CY2 1 nF/2 KV 1 n/2 KV
EMC RECOMMENDED CIRCUIT
DERATING CURVES
LDM2
C0
TVS
LDM1
MOV
FUSE
(a) (b)
C1
Vin
GND
+
Vin
GND
+Vo
-Vo
(0V)
EUT
LOAD
CY2
CY1
Figure 1
Figure 2
Table 1
Table 2
TEST CONFIGURATION
DC
Cin
Lin
DC
Load
Oscilloscope
Current
Probe
Note: Input refl ected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
External components
Lin 4.7H
Cin
220F, ESR < 1.0
at 100 KHz
100
80
60
40
20
Ambient Temperature (°C)
Load (%)
-40 -20 0 20 40 60
8571
Temperature Derating Curve
Safe operating area
10 Sec. Max.
Wave Soldering Time
4 Sec. Max.
Peak Temp. 260°C Max.
Time (sec.)
Temperature (°C)
250
200
150
100
50
0
Wave Soldering Profi le
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