Hi All,
I am a brand new newbie when it comes to smps.
I am making a smps for a car audio amplifier , I have read a lot on smps design but can't find anything related to the designing of the output filter inductors. Can anyone perhaps help me with a formula/calculation?
Thank you,
corrieb
I am a brand new newbie when it comes to smps.
I am making a smps for a car audio amplifier , I have read a lot on smps design but can't find anything related to the designing of the output filter inductors. Can anyone perhaps help me with a formula/calculation?
Thank you,
corrieb
i have built a 300w smps.o/p inductors not used.i/p 12v passes thru 100uh inductors.hope this helps.
i think bigger= better for those inductors (not too big )
u can take some iron powder cores with 10 turns of wire (thick), this works for me 🙂
u can take some iron powder cores with 10 turns of wire (thick), this works for me 🙂
L=Ton*(Vin-Vout)/0.3Iout
The bigger the inductor, much better, for it can fixed more ripple current. But be careful w/ your inductor, as you increase your inductor value, the current capacity and saturation current of your inductor also decreases.
The bigger the inductor, much better, for it can fixed more ripple current. But be careful w/ your inductor, as you increase your inductor value, the current capacity and saturation current of your inductor also decreases.
if u are using output inductors where do u take the feedback signal? after or before the inductor?
SSS,
I take the feedback after the inductor, other wise I am struggling to regulate the smps. why?
corrieb
I take the feedback after the inductor, other wise I am struggling to regulate the smps. why?
corrieb
because i'm also building one and dont know whats better 🙂corrieb said:SSS,
why?
also , do u put the filter caps after or before the inductors?
- Status
- Not open for further replies.
- Home
- General Interest
- Car Audio
- SMPS Output filter inductor calculation.