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perfect...vvv, thank you! i got the idea...
in simple model, assume iL(t)=iC(t)...( inductor current equal to control current), neglect artidicial ramp and inductor current ripple, we can see in the model, inductor is series with the current sourceiC(t)
so it does not contribute pole to transfer...
current mode single pole
hi, all
as we all known, in current mode control dc/dc converter, after add a inner current loop, the control to output transfer function only have one pole(1/2*pi*R*C),(compare to voltage mode control) the pole caused by inductor(L) dissipared...
how to understand...
hi, vvv
does this energy will be used to charge the output capacitor? or lost by itself??
and if i use a switch connect to the two nodes of inductor, it works when the power mos all open, the switch will short the inductor, so the ringing will dispear, to decrease EMI issue.
does it can work...
hi, all
i want to know, in power saving mode ,does the ringing at switch node influences the buck's efficiency, i just know it will causes EMI.
can someone help me?
thanks
hi,all
now, i am busy on testing my first power manage chip, during the testing, i puzzled by the test result.
for example, my current mode buck converter, when i simulate it under spectre, it can load 0mA-- 500mA and the output voltage is not change, almostly stable at 3.3v, but when i...
switching frequency dc-dc converter
hi,all
just as the topic, i want to know in dc/dc converter, why not use high frequency switch frequency, as we know, use high frequency can get small passive component, but high frequency will causes more switch loss,
but as the process goes down, i think...
hi,all
just as the topic, i want to know which part is critical when draw a dc/dc coverter's
layout? does voltage mode control and current mode control same..?
give out your experience..
thanks.
batistuta
hi,darla!
can you give me some references about dc/dc converter ac sim model?
i saw a topic of yours, about ac sim model.
thanks
hi
in which simulation s/w you want... i can provide matlab/psim...SPICE i dont have ready model.....
darla
can you send me the matlab ?
thanks.
Added after 3...
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