Datasheet

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CUI Inc │ SERIES: PDS2-M │ DESCRIPTION: DC-DC CONVERTER date 08/13/2015 │ page 6 of 7
1. Output load requirement
Toensurethismodulecanoperateef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2&Table2).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 3).
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.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
9 220
12 220
15 220
24 220
Figure 2
Table 2
Vin
(Vdc)
Cin
(µF)
Vo
(Vdc)
Cout
(µF)
5 4.7 3.3 10
12 2.2 5 10
15 2.2 9 4.7
24 1 12 2.2
-- -- 15 1
-- -- 24 0.47
Table 3
Vin
GN
D
+Vo
0V
DC
Cin
DC
Cout
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