Datasheet

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CUI Inc │ SERIES: PQD6-D │ DESCRIPTION: DC-DC CONVERTER date 10/29/2013 │ page 4 of 6
Recommended external circuit components
Vin (Vdc) 24 48
FUSE choose according to practical input current
MOV 10D560K 10D101K
LDM1 56μH56μH
TVS SMCJ48A SMCJ90A
C0 120μF/50V 120μF/100V
C1 225K/50V 225K/100V
LDM2 4.7μH 4.7μH
CY1 102K/2000V 102K/2000V
CY2 102K/2000V 102K/2000V
EMC RECOMMENDED CIRCUIT
DERATING CURVES
100
80
60
40
20
Ambient Temperature (°C)
Load (%)
-40 -20 0 20 40 60
8571 100
Safe operating area
LDM2

C0
TVS
LDM1
MOV
FUSE
C1
Vin
GND
+
Vin
GND
+Vo
-Vo
(0V)
EUT LOAD
CY2
CY
1
(a)
(b)
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 Temperature Derating Curve
Figure 1
Table 1
Figure 2 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 4.7μH
Cin
220μF, ESR < 1.0Ω
at 100 KHz
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