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Every LED Driving Chip has such a index names "Startup Current" , for instance :
But I really doubt whether this index is meaningful ?
First of all, no PCB designer told me its worth. In fact, a FAE even said that it has nothing to do with PCB design.
Secondly, I am very sure it is...
Do you mean that:
If a system needs compensation, then there must be a comp ind in the output. Then if there is no comp ind there, we can speculate that it needs not compensation ?
Do I misunderstand ?
If so, what do you exactly mean by that? :shock:
If not, it is still not clear that what kind...
Thank you for helping!
State space averaging is not so easy, and no paper of Critical Continuous Model is found. Maybe I can calculate it and send a papaer. :-)
Additionally , state space avg seems more likely to give a close loop function...
For bang-bang case, are hysteresis and hystereic are...
Hi!
Does "an inductor and capacitor" mean the components in the red circles ? Or do you mean something else ? ...
Besides, is every PSR system, which contains no feedback from the secondary side, needs not freq compensation ?
I am a fresh guy and I really don't know why :-) ~~~ Is it just a...
Hi!
Does "an inductor and capacitor" mean the components in the red circles ? Or do you mean something else ? ...
Besides, is every PSR system, which contains no feedback from the secondary side, needs not freq compensation ?
I am a fresh guy and I really don't know why :-) ~~~ Is it just a...
Hi :-)
I read some books and papers, including Switching Power Supply Design ( by A.I.Pressman ) and Switching Power Supplies A to Z ( by S.Maniktala ) , but still puzzled.
Generally, those books and papers mention what need to consider in Freq Comp for a PWM system with an EA. However, most...
---- Not really. As a matter of fact, W/L of the NOMS in the right side is larger than the left one, and accordingly there is a balance point if the reference works normally.
---- If Gm of NMOS+RES is larger than the left NMOS, then what you describe would happen. But in fact Gm of NMOS+RES is...
Hello everyone, the circuits above puzzles me a lot...
The only difference between the 2 circuits are the mirror directions, except the resisters and NMOS in black circles are set in order that that the loop of the current reference is OK.
However, the second circuit works good, while the...
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