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Datasheet

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date
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SERIES: PDS1-S DESCRIPTION: DC-DC CONVERTER
10/24/2018
FEATURES
• 1 W isolated output
• smaller package
• single unregulated output
• 1,500 Vdc isolation
• short circuit protection
• extended temperature range (-40~105°C)
• antistatic protection up to 8kV
• UL 60950-1 approval
• high efficiency at light load
• efficiency up to 80%
MODEL input
voltage
output
voltage
output
current
output
power
ripple
and noise2
efficiency
typ
(Vdc)
range
(Vdc) (Vdc)
min
(mA)
max
(mA)
max
(W)
typ
(mVp-p)
typ
(%)
PDS1-S3-S3-S 3.3 2.97~3.63 3.3 30 303 1 60 72
PDS1-S3-S5-S13.3 2.97~3.63 5 20 200 1 60 76
PDS1-S5-S3-S 5 4.5~5.5 3.3 30 303 1 60 72
PDS1-S5-S5-S15 4.5~5.5 5 20 200 1 60 80
PDS1-S5-S9-S15 4.5~5.5 9 12 111 1 60 80
PDS1-S5-S12-S15 4.5~5.5 12 9 84 1 60 80
PDS1-S5-S15-S15 4.5~5.5 15 7 67 1 60 80
PDS1-S5-S24-S15 4.5~5.5 24 4 42 1 60 80
PDS1-S12-S3-S 12 10.8~13.2 3.3 30 303 1 60 72
PDS1-S12-S5-S112 10.8~13.2 5 20 200 1 60 80
PDS1-S12-S9-S112 10.8~13.2 9 12 111 1 60 80
PDS1-S12-S12-S112 10.8~13.2 12 9 83 1 60 80
PDS1-S12-S15-S112 10.8~13.2 15 7 67 1 60 80
PDS1-S15-S5-S 15 13.5~16.5 5 20 200 1 60 80
PDS1-S15-S12-S 15 13.5~16.5 12 9 83 1 60 80
PDS1-S15-S15-S 15 13.5~16.5 15 7 67 1 60 80
PDS1-S24-S3-S 24 21.6~26.4 3.3 30 303 1 60 72
PDS1-S24-S5-S124 21.6~26.4 5 20 200 1 60 80
PDS1-S24-S9-S124 21.6~26.4 9 12 111 1 60 80
PDS1-S24-S12-S124 21.6~26.4 12 9 84 1 60 80
PDS1-S24-S15-S124 21.6~26.4 15 7 67 1 60 80
PDS1-S24-S24-S124 21.6~26.4 24 4 42 1 60 80
Notes: 1. UL approved
2. 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.
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CUI Inc SERIES: PDS1-S DESCRIPTION: DC-DC CONVERTER date 10/24/2018 page 2 of 6
INPUT
parameter conditions/description min typ max units
operating input voltage
3.3 Vdc input models
5 Vdc input models
12 Vdc input models
15 Vdc input models
24 Vdc input models
2.97
4.5
10.8
13.5
21.6
3.3
5
12
15
24
3.63
5.5
13.2
16.5
26.4
Vdc
Vdc
Vdc
Vdc
Vdc
surge voltage
for maximum of 1 second
3.3 Vdc input models
5 Vdc input models
12 Vdc input models
15 Vdc input models
24 Vdc input models
-0.7
-0.7
-0.7
-0.7
-0.7
5
9
18
21
30
Vdc
Vdc
Vdc
Vdc
Vdc
filter capacitance filter
OUTPUT
parameter conditions/description min typ max units
line regulation
for Vin change of 1%
3.3 Vdc output models
all other models
±1.5
±1.2
%
%
load regulation
measured from 10% load to full load
3.3 Vdc output models
5 Vdc output models
9 Vdc output models
12 Vdc output models
15 Vdc output models
24 Vdc output models
18
12
8
7
6
5
%
%
%
%
%
%
voltage accuracy see tolerance envelope curves
switching frequency 100% load, nominal input voltage 100 kHz
temperature coefficient 100% load ±0.03 %/°C
PROTECTIONS
parameter conditions/description min typ max units
short circuit protection13 & 24 Vdc input models; PDS1-S5-S24-S
all other models: continuous, automatic recovery
1 s
Notes: 1. The supply voltage must be discontinued at the end of the short circuit duration
SAFETY AND COMPLIANCE
parameter conditions/description min typ max units
isolation voltage input to output for 1 minute at 1 mA max. 1,500 Vdc
isolation resistance input to output at 500 Vdc 1,000 MΩ
safety approvals2UL 60950-1
conducted/radiated emissions CISPR32/EN55032, class B (external circuit required, see Figure 1)
ESD IEC/EN61000-4-2, class B, contact ±8kV
MTBF as per MIL-HDBK-217F at 25°C 3,500,000 hours
RoHS 2011/65/EU
Note: 2. See specific models noted on page 1
PART NUMBER KEY
PDS1 - SXX - SXX -S
Input Voltage Output Voltage
Base Number Packaging Style
SIP
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CUI Inc SERIES: PDS1-S DESCRIPTION: DC-DC CONVERTER date 10/24/2018 page 3 of 6
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MECHANICAL
parameter conditions/description min typ max units
dimensions 11.60 x 6.00 x 10.16 (0.457 x 0.236 x 0.4 inch) mm
case material plastic (UL94-V0)
weight 1.3 g
MECHANICAL DRAWING
ENVIRONMENTAL
parameter conditions/description min typ max units
operating temperature see derating curve -40 105 °C
storage temperature -55 125 °C
storage humidity non-condensing 95 %
temperature rise at full load, Ta = 25°C 25 °C
SOLDERABILITY
parameter conditions/description min typ max units
hand soldering 1.5 mm from case for 10 seconds 300 °C
wave soldering see wave soldering profile 260 °C
PIN CONNECTIONS
PIN Function
1 GND
2 Vin
3 0V
4+Vo
units: mm[inch]
tolerance: ±0.25[±0.010]
pin section tolerance: ±0.10[±0.004]
10 Sec. Max.
Wave Soldering Time
4 Sec. Max.
Peak Temp. 260°C Max.
Time (sec.)
Temperature (°C)
250
200
150
100
50
0
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CUI Inc SERIES: PDS1-S DESCRIPTION: DC-DC CONVERTER date 10/24/2018 page 4 of 6
EMC RECOMMENDED CIRCUIT
TEST CONFIGURATION
Recommended external circuit components
Vin
(Vdc) C1 C2 LDM
3.3 4.7μF/50V 10μF 6.8μH
54.7μF/50V 4.7μF 6.8μH
12 4.7μF/50V 2.2μF 6.8μH
15 4.7μF/50V 1μF 6.8μH
24 4.7μF/50V 0.47μF 6.8μH
External components
Lin 4.7μH
Cin 220μF, ESR < 1.0Ω
at 100 kHz
Vin
GND
+Vo
0V
DC/DC
LO
AD
LDM
C1
Vin
GN
D
C2
DC
Cin
Lin
DC
Lo
ad
Os
cilloscope
Current
Probe
DERATING CURVES
Rated Output Voltage
Output Current Percentage (%)
(Nominal Input Voltage)
Tolerance Envelope Curve
(all other models)
Output Voltage Accuracy (%)
10 20 40 60 80 100
10
0
5
-5
Rated Output Voltage
1.0
-7.5
-15
Output Current Percentage (%)
(Nominal Input Voltage)
Tolerance Envelope Curve
(3.3 Vdc output only)
Output Voltage Accuracy (%)
Typical Load Line
-10
-15
10 20 40 60 80 100
15
5
10
0
2.5
-2.5
Typical Load Line
-5
-10
-7.5
Max
Max
Min
Min
Figure 1
Figure 2
Table 1
Table 2
Note: 1. Input reflected-ripple current is measured with an inductor Lin and capacitor Cin to simulate source impedance.
100
80
60
40
20
Ambient Temperature (°C)
Load (%)
-40-20 020406085 105 120
Temperature Derating Curve
Safe operating area
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CUI Inc SERIES: PDS1-S DESCRIPTION: DC-DC CONVERTER date 10/24/2018 page 5 of 6
1. Output load requirement
To ensure this module can operate efficiently and reliably, the minimum output load may not be less than 10% 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. Overload Protection
Under normal operating conditions, the output circuit of this product has no protection against overload. The simplest method to add
this is to add a circuit breaker to the circuit.
3. Recommended circuit
If you want to further decrease the input/output ripple, you can increase the capacitance accordingly or choose capacitors with low
ESR(see Figure 3 & Table 3). 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).
APPLICATION NOTES
Note: 1. Operation under minimum load will not damage the converter; however, they may not meet all specifications listed.
2. Max. capacitive load tested at input voltage range and full load.
3. It is recommended to use either ceramic capacitors or electrolytic capacitors on the input and the output. Using tantalum capacitors may increase the risk of failure.
4. All specifications measured at: Ta=25°C, humidity<75%, nominal input voltage and rated output load, unless otherwise specified.
Vout
(Vdc)
Max. Capacitive Load
(μF)
3.3 220
5 220
12 220
15 220
24 220
Figure 3
Vin
GND
+Vo
0V
DC
Cin
DC
Cout
Table 3
Vin
(Vdc)
Cin
(µF)
Vout
(Vdc)
Cout
(µF)
3.3 4.7 3.3 10
5 4.7 5 10
12 2.2 9 4.7
15 2.2 12 2.2
24 1 15 1
-- -- 24 0.47
Table 4
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CUI Inc SERIES: PDS1-S DESCRIPTION: DC-DC CONVERTER date 10/24/2018 page 6 of 6
CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website.
CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is
assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use.
CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a
life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
Headquarters
20050 SW 112th Ave.
Tualatin, OR 97062
800.275.4899
Fax 503.612.2383
cui.com
techsupport@cui.com
rev. description date
1.0 initial release 03/19/2013
1.01 added model PDS1-S15-S12-S 07/29/2013
1.02 added model PDS1-S12-S3-S, updated spec 03/07/2014
1.03 added UL approval to some models 10/28/2014
1.04 updated tolerance envelope curves, corrected short circuit protection
details 10/24/2018
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
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