CUI Inc │ SERIES: PEM1-S │ DESCRIPTION: DC-DC CONVERTER
date 03/19/2013 │ page 4 of 6
DERATING CURVES
Tolerance Envelope Curve
Temperature Derating Curve
10
7.5
5
100
80
2.5
2.5
0
Rated Output Voltage
-2.5
60
-2.5
Safe operating area
40
20
-5
-7.5
-7.5
-10
10
20
30
40
50
60
70
80
90
100
Output Current Percentage (%)
(Nominal Input Voltage)
-40
-20
0
20
40
60
85
105 120
Ambient Temperature (°C)
EMC RECOMMENDED CIRCUIT
LDM
Recommended external circuit components
Vin
(Vdc)
Vin
Vin
+Vo
C1
LDM
C2
EUT
LOAD
C1
5
4.7μF/50V
4.7μF/50V
4.7μF/50V
4.7μF/50V
6.8μH
6.8μH
6.8μH
6.8μH
NC
12
NC
GND
GND
-Vo
(0V)
15
470pF/3kV
470pF/3kV
24
C2
TEST CONFIGURATION
Oscilloscope
Lin
External components
Lin
4.7μH
Current
Probe
Load
Cin
DC
DC
220μF, ESR < 1.0Ω
Cin
at 100 KHz
Note: Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
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