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
PRMC1 - DXX -
XXX
-S
Base Number
Input Voltage
Output
S = single
D = dual
Output Voltage
Packaging Style
SIP
INPUT
parameter
operating input voltage
conditions/description
5 Vdc input models
12 Vdc input models
24 Vdc input models
48 Vdc input models
5 Vdc input models
12 Vdc input models
24 Vdc input models
48 Vdc input models
for maximum of 1 second
5 Vdc input models
12 Vdc input models
24 Vdc input models
48 Vdc input models
capacitance filter
models ON (CTRL open or insulated)
CTRL
2
Notes:
min
4.5
9
18
36
3.5
4.5
11
24
-0.7
-0.7
-0.7
-0.7
typ
5
12
24
48
4
8
16
33
max
9
18
36
75
4.5
9
18
36
12
25
50
100
units
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
start-up voltage
surge voltage
filter
models OFF (connect voltage, current into CTRL is
5~10mA)
2. See application notes on page 6.
OUTPUT
parameter
line regulation
load regulation
voltage accuracy
no-load voltage accuracy
voltage balance
3
switching frequency
transient recovery time
transient response deviation
temperature coeffecient
Notes:
conditions/description
full load, input voltage from low to high
5% to 100% load
5% to 100% load
input voltage range
dual output, balanced loads
100% load, nominal input voltage, PFM mode
25% load step change
25% load step change
100% load
min
typ
±0.2
±0.4
±1
±1.5
±0.3
200
0.5
±2.5
±0.02
max
±0.5
±0.75
±3
±5
±0.5
2
±5
±0.03
units
%
%
%
%
%
KHz
ms
%
%/°C
3. For dual output models, unbalanced loads should not exceed ±5%. If ±5% is exceeded, it may not meet all specifications.
PROTECTIONS
parameter
short circuit protection
conditions/description
continuous, automatic recovery
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min
typ
max
units
For more information, please visit the
product page.
CUI Inc
│
SERIES:
PRMC1-S
│
DESCRIPTION:
DC-DC CONVERTER
date
06/02/2014
│
page
3 of 6
SAFETY AND COMPLIANCE
parameter
isolation voltage
isolation resistance
conducted emissions
radiated emissions
ESD
radiated immunity
EFT/burst
surge
conducted immunity
voltage dips & interruptions
MTBF
RoHS
conditions/description
input to output for 1 minute at 1 mA max.
input to output at 500 Vdc
min
3,000
1,000
typ
max
units
Vdc
MΩ
CISPR22/EN55022, class B (external circuit required, see Figure 1-b)
CISPR22/EN55022, class B (external circuit required, see Figure 1-b)
IEC/EN61000-4-2, class B, contact ± 4kV
IEC/EN61000-4-3, class A, 10V/m
IEC/EN61000-4-4, class B, ± 2kV (external circuit required, see Figure 1-a)
IEC/EN61000-4-5, class B, ± 2kV (external circuit required, see Figure 1-a)
IEC/EN61000-4-6, class A, 3 Vr.m.s
IEC/EN61000-4-29, class B, 0%-70%
as per MIL-HDBK-217F @ 25°C
2011/65/EU
1,000,000
hours
ENVIRONMENTAL
parameter
operating temperature
storage temperature
storage humidity
temperature rise
non-condensing
at full load, Ta=25°C
25
conditions/description
see derating curve
min
-40
-55
typ
max
105
125
95
units
°C
°C
%
°C
SOLDERABILITY
parameter
hand soldering
wave soldering
conditions/description
1.5 mm from case for 10 seconds
see wave soldering profile
min
typ
max
300
260
units
°C
°C
MECHANICAL
parameter
dimensions
case material
weight
conditions/description
22.00 x 9.50 x 12.00 (0.866 x 0.374 x 0.472 inch)
plastic (UL94-V0)
4.9
g
min
typ
max
units
mm
MECHANICAL DRAWING
0.50[0.020]
12.00
[0.472]
units: mm[inch]
tolerance: ±0.25[±0.010]
pin section tolerance: ±0.10[±0.004]
PIN CONNECTIONS
PIN
1
2
3
5
6
7
8
NC: No Connection
Ø1.00 [0.039]
1
2
3
5
6
7
8
Grid Size:
2.54mm x 2.54mm
Single Output
GND
Vin
CTRL
NC
+Vo
0V
CS
Dual Output
GND
Vin
CTRL
NC
+Vo
0V
-Vo
9.50
[0.374]
4.10 [0.161]
Front View
22.00 [0.866]
2.54[0.100]
0.30 [0.012]
PCB Layout
Top View
1
2
3
5
6
7
8
2.50
[0.098]
0.50[0.020]
17.78 [0.700]
Bottom View
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CUI Inc
│
SERIES:
PRMC1-S
│
DESCRIPTION:
DC-DC CONVERTER
date
06/02/2014
│
page
4 of 6
DERATING CURVES
Wave Soldering Profile
Peak Temp. 260°C Max.
250
Wave Soldering Time
4 Sec. Max.
100
80
60
40
20
Temperature Derating Curve
Temperature (°C)
10 Sec. Max.
150
Load (%)
200
Safe operating area
100
50
0
-40
-20
0
20
40
60
85
105
120
Ambient Temperature (°C)
Time (sec.)
EMC RECOMMENDED CIRCUIT
FU SE
Vi n
L D M1
L D M2
Vi n
+
MO V
GND
TVS
C0
C1
C2
Cd
C trl
D1
R
C trl
GND
+Vo
Figure 1
EUT
-Vo
(0 V)
L O AD
(a)
(b)
CY
(c)
Recommended external circuit components
Vin (Vdc)
FUSE
MOV
LDM1
TVS
C0
Table 1
C1
LDM2
C2
CY
D1
R
Cd
47nF/100V
--
--
SMCJ13A
680μF/16V
4.7μF/50V
12μH
4.7μF/50V
1nF/3kV
RB160M-60/1A
5
12
--
--
SMCJ28A
680μF/25V
4.7μF/50V
12μH
4.7μF/50V
1nF/3kV
RB160M-60/1A
24
S14K35
56μH
SMCJ48A
330μF/50V
4.7μF/50V
12μH
4.7μF/50V
1nF/3kV
RB160M-60/1A
48
S14K60
56μH
SMCJ90A
330μF/100V
4.7μF/100V
12μH
4.7μF/100V
1nF/3kV
RB160M-60/1A
choose according to practical input current
R=
Follows:aaaaa
V
C
−
V
D
−
1.0
−300
aaaaaaaaaaaa
I
C
47nF/100V
47nF/100V
47nF/100V
Note: Figure 1-c is on/off control circuit. See page 6 for details.
TEST CONFIGURATION
Oscilloscope
Lin
Figure 2
External components
Cin
Current
Probe
DC DC
Load
Table 2
Lin
Cin
4.7μH
220μF, ESR < 1.0Ω
at 100 KHz
Note: Input reflected-ripple current is measured with an inductor Lin and Capacitor Cin to simulate source impedance.
Lin(4.7µH)
Cin(220µF, ESR < 1.0Ω at 100 KHz)
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product page.
CUI Inc
│
SERIES:
PRMC1-S
│
DESCRIPTION:
DC-DC CONVERTER
date
06/02/2014
│
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.
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
2.
Figure 3
Table 3
Vin
(Vdc)
5
12
24
48
Note:
Table 4
Cout
(µF)
100
100
100
100
Lout
2
(µH)
2.2~10
2.2~10
2.2~10
2.2~10
Cd
(nF/V)
47/100
47/100
47/100
47/100
Single
Vout
(Vdc)
3.3
5
9
12
15
24
Note:
Cin1
(µF)
100
100
10
10
Cin2
(µF)
47
47
1
1
Lin
(µH)
4.7~12
4.7~12
4.7~12
4.7~12
Cs
1
(µF)
10~22
10~22
10~22
10~22
Max. Capacitive
Load
(μF)
2700
2200
1800
1000
680
470
1. For each output.
Dual
Vout
(Vdc)
--
5
--
12
15
--
Max. Capacitive
Load
1
(μF)
--
1000
--
470
330
--
1. For single output only
2. For dual output only
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
−
V
D
−
1.0
−300
R=
C
I
C
V
c
: Control pin input voltage
V
D
: Forward voltage drop of diode D1
I
C
: Input current to control pin
R: Resistor of control circuit
4.
Vi n
+Vo
Figure 4
Vc
D1
Cd
R
C trl
GND
EUT
-Vo
(0 V)
L O AD
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.
Vin
(Vdc)
Table 5
Input Voltage
Range
Input Current(A)
Ip
Ip
(mA)
450
220
110
55
Figure 5
5
12
24
48
Input Voltage (V)
Note:
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<75%, nominal input voltage and rated output load unless otherwise specified.
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