A-XT-1W
Series
Application Notes
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.
Inductor
L,μH
A0303XT
A0305XT
A0309XT
A0312XT
A0315XT
A0503XT
A0505XT
A0305NXT
A0509XT
A0512XT
A0515XT
A1205XT
A1209XT
A1212XT
A1215XT
10
22
22
47
220
10
10
10
22
47
220
10
22
47
220
SMD
82103C
82223C
82223C
82473C
82474C
82103C
82103C
82103C
82223C
82473C
82474C
82103C
82223C
82473C
82474C
Through Hole
11R103C
11R223C
11R223C
11R473C
11R474C
11R103C
11R103C
11R103C
11R103C
11R223C
11R473C
11R474C
11R223C
11R473C
11R474C
Capacitor
C,μF
4.7
2.2
2.2
1
0.22
4.7
4.7
4.7
2.2
1
0.22
4.7
2.2
1
0.22
Tolerance Envelopes
The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
changes in output loading.
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
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