Ripple Current of Input/Output Aluminum Capacitor in LM22680EVM

The approximate RMS current in the input capacitors will be about 313mA, under the customer condition given above.

The approximate RMS current in the output capacitor will be about 150mA, under the customer condition given above.

FD

Hi~

Thank you for your answer.

According to your answer, 

Approximate RMS current in the input capacitors will be about 313mA, under the customer condition given above

If see LM22680EVM Datasheet, C2(Input Capacitor)  Part Number is EEEFK1J220XP(Panasonic)

If see EEEFK1J220XP datasheet, Ripple current(100kHz) is 120mA

Do not have a problem? I attach EEEFK1J220XP datasheet.

Please check and answer as soon as possible.

Both C1 and C2 will share the current.  So C2 will have a little less than the 313mA.

However, it is prudent to use a capacitor with a larger current rating, or two capacitors, rather than the one

listed in the data sheet.

FD

Thank you for your answer.

According to your answer, "The approximate RMS current in the input capacitors will be about 313mA."

1. Is this value(313mA) measured value or Simulation value???

   - If this value is simulation value, Can you provide simulation tool??

2. Can you provide ripple current every 100mA step??  

     - Out customer condition : Vin=30V, Vout=3.3V, I=1A