Datasheet

cui.com
CUI Inc │ SERIES: PQM3-M │ DESCRIPTION: DC-DC CONVERTER date 05/14/2014 │ page 4 of 6
Recommended external circuit components
Vin (Vdc) 12 24 48
FUSE choose according to practical input current
MOV -- 10D560 10D101
LDM1 -- 56μH 56μH
TVS SMCJ28A SMCJ48A SMCJ90A
C0 680μF/25V 120μF/50V 120μF/100V
LDM2 12μH 12μH 12μH
C1 4.7μF/50V 4.7μF/50V 4.7μF/100V
C2 4.7μF/50V 4.7μF/50V 4.7μF/100V
EMC RECOMMENDED CIRCUIT
DERATING CURVES
100
80
60
40
20
Ambient Temperature (°C)
Load (%)
-40-20 0204060
85 105 120
Safe operating area
LD M2
C0
TVS
LD M1
MOV
FUSE
C1
Vin
+
Vin
GND
+Vo
0V
EUT LOAD
C2
GND
(a)(b)
0
50
100
150
200
250
Time (sec.)
Tem peratur e(C)
60 Max
(>220C)
Sec
220 C
10 MaxSec
Peak.Temp240 C
Reow Soldering Prole
Temperature Derating Curve
Figure 1
TEST CONFIGURATION
DC
Cin
Lin
DC
Load
Oscilloscope
Current
Probe
Lin(4.7µH) Cin(220µF, ESR<1.0Ω at 100KHz)
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
Table 1
Figure 2 Table 2
For more information, please visit the product page.