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date
07/07/2021
page
1 of 6
SERIES: PQMC1-S │ DESCRIPTION: DC-DC CONVERTER
FEATURES
•
•
•
•
•
•
•
•
•
1 W isolated output
smaller package
single/dual regulated output
1,500 Vdc isolation
short circuit protection
temperature range (-40~105°C)
high efficiency at light load
efficiency up to 81%
EN 62368-1
MODEL
input
voltage
output
voltage
output
current
output
power
ripple
and noise1
efficiency
typ
(Vdc)
range
(Vdc)
(Vdc)
min
(mA)
max
(mA)
max
(W)
max
(mVp-p)
typ
(%)
PQMC1-D5-S5-S
5
4.5~9
5
10
200
1
75
72
PQMC1-D5-S12-S
5
4.5~9
12
4
83
1
75
76
PQMC1-D5-S15-S
5
4.5~9
15
3
67
1
75
75
PQMC1-D5-D5-S
5
4.5~9
±5
±5
±100
1
75
73
PQMC1-D5-D12-S
5
4.5~9
±12
±2
±42
1
75
76
PQMC1-D5-D15-S
5
4.5~9
±15
±2
±33
1
75
75
PQMC1-D12-S3-S
12
9~18
3.3
15
303
1
75
75
PQMC1-D12-S5-S
12
9~18
5
10
200
1
75
77
PQMC1-D12-S9-S
12
9~18
9
6
111
1
75
79
PQMC1-D12-S12-S
12
9~18
12
4
83
1
75
80
PQMC1-D12-S15-S
12
9~18
15
3
67
1
75
80
PQMC1-D12-D5-S
12
9~18
±5
±5
±100
1
75
78
PQMC1-D12-D12-S
12
9~18
±12
±2
±42
1
75
81
PQMC1-D12-D15-S
12
9~18
±15
±2
±33
1
75
80
PQMC1-D24-S3-S
24
18~36
3.3
15
303
1
75
75
PQMC1-D24-S5-S
24
18~36
5
10
200
1
75
77
PQMC1-D24-S12-S
24
18~36
12
4
83
1
75
81
PQMC1-D24-S15-S
24
18~36
15
3
67
1
75
79
PQMC1-D24-S24-S
24
18~36
24
2
42
1
75
77
PQMC1-D24-D5-S
24
18~36
±5
±5
±100
1
75
80
PQMC1-D24-D12-S
24
18~36
±12
±2
±42
1
75
80
PQMC1-D24-D15-S
24
18~36
±15
±2
±33
1
75
80
PQMC1-D48-S3-S
48
36~75
3.3
15
303
1
75
75
PQMC1-D48-S5-S
48
36~75
5
10
200
1
75
76
PQMC1-D48-S12-S
48
36~75
12
4
83
1
75
81
PQMC1-D48-S15-S
48
36~75
15
3
67
1
75
80
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CUI Inc │ SERIES: PQMC1-S │ DESCRIPTION: DC-DC CONVERTER
MODEL
(CONTINUED)
input
voltage
typ
(Vdc)
range
(Vdc)
PQMC1-D48-D5-S
48
PQMC1-D48-D12-S
48
PQMC1-D48-D15-S
48
Notes:
date 07/07/2021 │ page 2 of 6
output
voltage
output
current
output
power
ripple
and noise1
efficiency
(Vdc)
min
(mA)
max
(mA)
max
(W)
typ
(mVp-p)
typ
(%)
36~75
±5
±5
±100
1
75
76
36~75
±12
±2
±42
1
75
80
36~75
±15
±2
±33
1
75
80
1. ripple and noise are measured at 20 MHz BW by “parallel cable” method with 1 μF ceramic and 10 μF electrolytic capacitors on the output.
PART NUMBER KEY
PQMC1 - DXX - XXX - S
Base Number
Input Voltage
INPUT
Output
S = single
D = dual
Output Voltage
Packaging Style
SIP
parameter
conditions/description
min
typ
max
units
operating input voltage
5 Vdc input models
12 Vdc input models
24 Vdc input models
48 Vdc input models
4.5
9
18
36
5
12
24
48
9
18
36
75
Vdc
Vdc
Vdc
Vdc
start-up voltage
5 Vdc input models
12 Vdc input models
24 Vdc input models
48 Vdc input models
3.5
4.5
11
24
4
8
16
33
4.5
9
18
36
Vdc
Vdc
Vdc
Vdc
surge voltage
for maximum of 1 second
5 Vdc input models
12 Vdc input models
24 Vdc input models
48 Vdc input models
-0.7
-0.7
-0.7
-0.7
12
25
50
100
Vdc
Vdc
Vdc
Vdc
filter
capacitance filter
remote on/off2
Notes:
models ON (REM pin open or insulated)
models OFF (connect voltage, current into REM pin 5~10mA)
2. See application notes on page 5.
OUTPUT
parameter
conditions/description
typ
max
units
line regulation
full load, input voltage from low to high
min
±0.2
±0.5
%
load regulation
5% to 100% load
±0.4
±0.75
%
voltage accuracy
5% to 100% load
±1
±3
%
no-load voltage accuracy
±1.5
±5
%
voltage balance3
dual output, balanced loads
±0.3
±0.5
%
switching frequency
100% load, nominal input voltage, PFM mode
200
transient recovery time
25% load step change
0.5
transient response deviation
25% load step change
temperature coeffecient
100% load
Notes:
kHz
2
ms
±2.5
±5
%
±0.02
±0.03
%/°C
max
units
3. For dual output models, unbalanced loads should not exceed ±5%. If ±5% is exceeded, it may not meet all specifications.
PROTECTIONS
parameter
conditions/description
short circuit protection
automatic recovery
min
cui.com
typ
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CUI Inc │ SERIES: PQMC1-S │ DESCRIPTION: DC-DC CONVERTER
date 07/07/2021 │ page 3 of 6
SAFETY AND COMPLIANCE
parameter
conditions/description
isolation voltage
input to output for 1 minute at 1 mA max.
1,500
min
typ
max
Vdc
isolation resistance
input to output at 500 Vdc
1,000
MΩ
safety approvals
certified to 62368-1: EN
conducted emissions
CISPR22/EN55022, class B (external circuit required, see Figure 1-b)
radiated emissions
CISPR22/EN55022, class B (external circuit required, see Figure 1-b)
ESD
IEC/EN61000-4-2, class B, contact ± 4kV
radiated immunity
IEC/EN61000-4-3, class A, 10V/m
EFT/burst
IEC/EN61000-4-4, class B, ± 2kV (external circuit required, see Figure 1-a)
surge
IEC/EN61000-4-5, class B, ± 2kV (external circuit required, see Figure 1-a)
conducted immunity
IEC/EN61000-4-6, class A, 3 Vr.m.s
voltage dips & interruptions
IEC/EN61000-4-29, class B, 0%-70%
MTBF
as per MIL-HDBK-217F @ 25°C
RoHS
2011/65/EU
1,000,000
units
hours
ENVIRONMENTAL
parameter
conditions/description
min
max
units
operating temperature
see derating curve
-40
105
°C
-55
125
°C
95
%
storage temperature
storage humidity
non-condensing
temperature rise
at full load, Ta=25°C
typ
25
°C
SOLDERABILITY
parameter
conditions/description
hand soldering
wave soldering
min
typ
max
units
1.5 mm from case for 10 seconds
300
°C
see wave soldering profile
260
°C
max
units
MECHANICAL
parameter
conditions/description
min
dimensions
22.00 x 9.50 x 12.00 (0.866 x 0.374 x 0.472 inch)
case material
plastic (UL94-V0)
typ
mm
weight
4.9
g
PIN CONNECTIONS
GND
GND
2
Vin
Vin
3
REM
REM
5
NC
NC
6
+Vo
+Vo
7
0V
0V
8
CS
-Vo
Front View
2.54[0.100]
22.00 [0.866]
1
2
3
5
6
0.50[0.020]
17.78 [0.700]
Bottom View
cui.com
0.30 [0.012]
1
NC: No Connection
Grid Size:
2.54mm x 2.54mm
1
2
3
Ø1.00 [0.039]
5
6
4.10 [0.161]
Dual Output
9.50
[0.374]
Single Output
2.50
[0.098]
PIN
12.00
[0.472]
units: mm[inch]
tolerance: ±0.25[±0.010]
pin section tolerance: ±0.10[±0.004]
0.50[0.020]
MECHANICAL DRAWING
7
8
PCB Layout
Top View
7
8
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CUI Inc │ SERIES: PQMC1-S │ DESCRIPTION: DC-DC CONVERTER
date 07/07/2021 │ page 4 of 6
DERATING CURVES
EMC RECOMMENDED CIRCUIT
Figure 1
Recommended external circuit components
Vin (Vdc)
5
FUSE
12
24
48
choose according to practical input current
MOV
--
--
S14K35
S14K60
LDM1
--
--
56μH
56μH
TVS
SMCJ13A
SMCJ28A
SMCJ48A
SMCJ90A
C0
680μF/16V
680μF/25V
330μF/50V
330μF/100V
Table 1
C1
4.7μF/50V
4.7μF/50V
4.7μF/100V
4.7μF/100V
LDM2
12μH
12μH
12μH
12μH
C2
4.7μF/50V
4.7μF/50V
4.7μF/50V
4.7μF/100V
CY
1nF/2kV
1nF/2kV
1nF/2kV
1nF/2kV
D1
RB160M-60/1A
RB160M-60/1A
RB160M-60/1A
RB160M-60/1A
V − VD − 1.0
−300
R= C
Follows:aaaaa
aaaaa
aaaaaaaaaaaa
IC
R
Cd
47nF/100V
47nF/100V
47nF/100V
47nF/100V
Note: Figure 1-c is on/off control circuit. See page 5 for details.
TEST CONFIGURATION
Figure 2
Table 2
External components
Note:
Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
cui.com
Lin
4.7μH
Cin
220μF, ESR < 1.0Ω
at 100 kHz
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CUI Inc │ SERIES: PQMC1-S │ DESCRIPTION: DC-DC CONVERTER
date 07/07/2021 │ page 5 of 6
APPLICATION NOTES
1. Output load requirement
To ensure this module can operate efficiently and reliably, the minimum output load may not be less than 5% of the full load during
operation. If the actual output power is low, connect a resistor at the output end in parallel to increase the load.
2. Recommended circuit
This series has been tested according to the following recommended testing circuit before leaving the factory. This series should
be tested under load (see Figure 3 and Table 3). If you want to further decrease the input/output ripple, you can increase the
capacitance accordingly or choose capacitors with low ESR. However, the capacitance of the output filter capacitor must be
appropriate. If the capacitance is too high, a startup problem might arise. For every channel of the output, to ensure safe and reliable
operation, the maximum capacitance must be less than the maximum capacitive load (see Table 4).
Single output
Dual output
Figure 3
Table 3
Table 4
Vin
(Vdc)
Cin1
(µF)
Cin2
(µF)
Lin
(µH)
Cs1
(µF)
Cout
(µF)
Lout2
(µH)
Cd
(nF/V)
5
100
47
4.7~12
10~22
100
2.2~10
47/100
12
100
47
4.7~12
10~22
100
2.2~10
47/100
24
10
1
4.7~12
10~22
100
2.2~10
47/100
48
10
1
4.7~12
10~22
100
2.2~10
47/100
Note:
1. For single output only
2. For dual output only
Single
Vout
(Vdc)
Max. Capacitive
Load
(μF)
Dual
Vout
(Vdc)
Max. Capacitive
Load1
(μF)
3.3
2700
--
--
5
2200
5
1000
9
1800
--
--
12
1000
12
470
15
680
15
330
24
Note:
470
--
--
1. For each output.
3. CTRL Terminal
When open or applied high impedance, the converter will turn on. When it’s pulled high, the converter will shutdown. The input
current should between 5~10mA. Exceeding the maximum 20mA will cause permanent damage to the converter. The value for R can
be derived as follows:
V − VD − 1.0
−300
R= C
IC
Vc: Control pin input voltage
VD: Forward voltage drop of diode D1
IC: Input current to control pin
R: Resistor of control circuit
Figure 4
4. Input Current
When it is used in an unregulated condition, make sure that the input fluctuations and ripple voltage do not exceed the module
standard. Refer to Figure 5 and Table 5 for the startup current of this dc-dc module.
Figure 5
Note:
Table 5
Vin
(Vdc)
Ip
(mA)
5
450
12
220
24
110
48
55
1. Minimum load shouldn't be less than 5%, otherwise ripple may increase dramatically. Operation under minimum load will not damage the converter, however, they may
not meet all specifications listed.
2. Maximum capacitive load is tested at input voltage range and full load.
3. All specifications are measured at Ta=25°C, humidity