MTU1S0509MC Просмотр технического описания (PDF) - Murata Manufacturing
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MTU1S0509MC Datasheet PDF : 6 Pages
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MTU1 Series
Isolated 1W Single Output SM 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
MTU1S0505MC
MTU1S0509MC
MTU1S0512MC
MTU1S0515MC
MTU1S1205MC
MTU1S1209MC
MTU1S1212MC
MTU1S1215MC
Inductor
SMD
Capacitor
Through Hole C, μF
TBD
EFFICIENCY VS LOAD
MTU1S05xxMC
90
80
70
15V
60
12V
9V
50
5V
40
30
20
10
0
0 10 20 30 40 50 60 70 80 90 100
Load (%)
MTUS12xxMC
90
80
70
15V
60
12V
50
9V
5V
40
30
20
10
0
0 10 20 30 40 50 60 70 80 90 100
Load (%)
www.murata-ps.com
Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232
2011-02-01 KDC_MTU.A03 Page 4 of 6
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