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PDS1-S3-S3-D

P1-P3P4-P6
cui.com
CUI Inc │ SERIES: PDS1-D │ DESCRIPTION: DC-DC CONVERTER date 04/11/2017 │ 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
5 4.7μF/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
Load
Oscilloscope
Current
Probe
DERATING CURVES
10 20 30 40 50 60 70 80 90 100
10
0
5
-5
Typical Load Line
Rated Output Voltage
1
-7.5
-15
Output Current Percentage (%)
(Nominal Input Voltage)
Tolerance Envelope Curve (3.3 Vdc models)
Output Voltage Accuracy (%)
10 20 30 40 50 60 70 80 90 100
10
-10
0
2.5
5
7.5
-2.5
-5
-7.5
Typical Load Line
Rated Output Voltage
2.5
-2.5
-7.5
Output Current Percentage (%)
(Nominal Input Voltage)
Tolerance Envelope Curve(all other models)
Output Voltage Accuracy (%)
Figure 1
Figure 2
Table 1
Table 2
Note: 1. Input reected-ripple current is measured with an inductor Lin and capacitor Cin to simulate source impedance.
10 20 30 40 50 60 70 80 90 100
10
-10
0
2.5
5
7.5
-2.5
-5
-7.5
Typical Load Line
Rated Output Voltage
2.5
-2.5
-7.5
Output Current Percentage (%)
(Nominal Input Voltage)
Tolerance Envelope Curve
Output Voltage Accuracy (%)
100
80
60
40
20
Ambient Temperature (°C)
Load (%)
-40-20 0204060
85 105 120
Temperature Derating Curve
Safe operating area
For more information, please visit the product page.
cui.com
CUI Inc │ SERIES: PDS1-D │ DESCRIPTION: DC-DC CONVERTER date 04/11/2017 │ page 5 of 6
1. Output load requirement
To ensure this module can operate eciently 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 lter 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 specications 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 specications measured at: Ta=25°C, humidity<75%, nominal input voltage and rated output load, unless otherwise specied.
Vout
(Vdc)
Max. Capacitive Load
(μF)
3.3 220
5 220
12 220
15 220
24 220
Figure 3
Vin
GN D
+V
o
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
Note: It’s not recommended to connect any external capacitors in
applications with less than 0.5 watt output.
Table 4
For more information, please visit the product page.
CUI Inc │ SERIES: PDS1-D │ DESCRIPTION: DC-DC CONVERTER date 04/11/2017 │ page 6 of 6
CUI oers 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 aect its safety or eectiveness.
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 models, added UL approval to some models, updated spec 10/10/2014
1.02 added UL approval to some models 12/22/2014
1.03 updated tolerance envelope curves 04/11/2017
The revision history provided is for informational purposes only and is believed to be accurate.
REVISION HISTORY
For more information, please visit the product page.
P1-P3P4-P6

PDS1-S3-S3-D

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Buy PDS1-S3-S3-D
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Description:
Isolated DC/DC Converters dc-dc isolated, 1 W, 2.97 3.63 Vdc input, 3.3 Vdc, 100 mA, single unregulated output, DIP
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