PQMC3-S Datasheet, PDF (4/6 Pages) CUI INC – DC-DC CONVERTER

CUI Inc │ SERIES: PQMC3-S │ DESCRIPTION: DC-DC CONVERTER
date 03/19/2013 │ page 4 of 6
DERATING CURVES
Wave Soldering Profile
Peak Temp. 260°C Max.
250
Wave Soldering Time
4 Sec. Max.
200
10 Sec. Max.
150
100
50
0
Time (sec.)
EMC RECOMMENDED CIRCUIT
Temperature Derating Curve
100
80
60
Safe operating area
40
20
-40 -20
0
20
40
60
85
Ambient Temperature (°C)
105 120
Figure 1
Vin
G ND
FUS E
LDM1
LDM2
MOV
TVS
+
C0
(a)
C1
_(b)
CTRL ^{D1 R}
C2
Cd
CY
(c)
Vin
+Vo
CTRL EUT LOAD
G ND
-Vo
(0V)
Recommended external circuit components
Vin (Vdc)
5
12
24
48
FUSE
choose according to practical input current
MOV
TBD
--
10D560
10D101
LDM1
TBD
--
56μH
56μH
TVS
TBD
SMCJ28A
SMCJ48A
SMCJ90A
C0
TBD
680μF/25V
120μF/50V
120μF/100V
C1
TBD
4.7μF/50V
4.7μF/50V
4.7μF/100V
LDM2
TBD
12μH
12μH
12μH
C2
TBD
4.7μF/50V
4.7μF/50V
4.7μF/100V
CY
TBD
1nF/2KV
1nF/2KV
1nF/2KV
D1
RB160M-60/1A RB160M-60/1A RB160M-60/1A RB160M-60/1A
R
Follows:a^Ra⁼aa^Va^C
− V_D
I_C
−1.0 _{a−a3a0a0aaaaaaaa}
Cd
47nF/100V
47nF/100V
47nF/100V
47nF/100V
TEST CONFIGURATION
Oscilloscope
Lin
DC DC ^Current
Cin Probe
Load
External components
Lin
4.7μH
Cin
220μF, ESR < 1.0Ω
at 100 KHz
Note: Input r_Lef_il_nec₍t₄ed_.-₇ri_µpp_Hle₎current_Cis_inm₍e₂a₂su₀re_µd_Fw_,ith_Ea_Sn_Rind_<uc₁to_.r₀L_Ωin a_an_td ₁Ca₀p₀aci_Kto_Hr C_zin₎ to simulate source impedance.
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