ln023
Newbie level 6
My appilcation is a DC-DC converter design with V-out 3V, I out 5A.
I rms at output = 2.5A (assuming worst case Irms as Iout/2).
How to choose Output decoupling capacitors in DC-DC design to stand this rms current rating?
RMS current rating is not provided in most capacitor datasheets.
If i need to choose a 0.01uF cap , what should the Voltage rating of the capacitor be?
I think rather than choosing a cap with Voltage rating around 6V, it should be based on ESR value, and assumed I-rms, the voltage rating should be greater than ( I-rms x ESR ) Volts.
Please provide your suggestions and comments
Thanks
Ln
I rms at output = 2.5A (assuming worst case Irms as Iout/2).
How to choose Output decoupling capacitors in DC-DC design to stand this rms current rating?
RMS current rating is not provided in most capacitor datasheets.
If i need to choose a 0.01uF cap , what should the Voltage rating of the capacitor be?
I think rather than choosing a cap with Voltage rating around 6V, it should be based on ESR value, and assumed I-rms, the voltage rating should be greater than ( I-rms x ESR ) Volts.
Please provide your suggestions and comments
Thanks
Ln