NKA0303DC データシートの表示（PDF） - Unspecified
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NKA0303DC Datasheet PDF : 7 Pages
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NKA Series
Isolated Sub-Miniature 1W Dual Output DC-DC Converters
APPLICATION NOTES (continued)
Output Ripple Reduction
By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.
Component selection
Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as possible, ceramic types are recommended.
The voltage rating should be at least twice (except for 15V output), the rated output voltage of the DC-DC converter.
Inductor: The rated current of the inductor should not be less than that of the output of the DC-DC converter. At the rated current, the DC resistance of the inductor
should be such that the voltage drop across the inductor is <2% of the rated voltage of the DC-DC converter. The SRF (Self Resonant Frequency) should be
>20MHz.
L
Power
Source
DC
DC
C
Load
L, μH
NKA0303xC
10
NKA0305xC
22
NKA0309xC
47
NKA0312xC
68
NKA0315xC
470
NKA0503xC
10
NKA0505xC
22
NKA0505xEC
22
NKA0509xC
47
NKA0512xC
150
NKA0515xC
470
NKA1205xC
22
NKA1209xC
47
NKA1212xC
150
NKA1215xC
470
Inductor
SMD
82103C
82223C
82473C
82683C
82474C
82103C
82223C
82223C
82473C
82154C
82474C
82223C
82473C
82154C
82474C
Through Hole
11R103C
11R223C
11R473C
11R683C
11R474C
11R103C
11R223C
11R223C
11R473C
11R154C
11R474C
11R223C
11R473C
11R154C
11R474C
Capacitor
C, μF
1uF
2.2uF
2.2uF
3.3uF
2.2uF
1uF
2.2uF
2.2uF
2.2uF
0.33uF
2.2uF
2.2uF
2.2uF
0.33uF
2.2uF
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KDC_NKA.L01 Page 5 of 7
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