It will be something less after you get the real control-to-output TF as explained above, but anyway still high because of large crossover.As shown above the RLC at crossover frequency (which I have chosen 1/6 of the switching frequency which is 83.3kHz). The gain needed to compensate is 58.5dB, which found to very large. To compensate. Is this value of mine realistic?
Your circuit is not a boost converter. It shows the output stage of a Buck..
The RLC circuit can not predict the required transfer function for the control of a Boost converter. It can however predict the TF for a Buck (after one makes the changes explained in previous post).While trying to debug, I go back to check the RLC of the boost and check the needed gain and phase to compensate it. And thats what I guess I'm having trouble since at cross over frequency I have to get a 58.5dB.
I do not know what boost factor means. Vout/Vin ?While comparing in my specifications I have almost greater than 100% of boosting factor needed. Is that, can be a factor also?
The RLC circuit can not predict the required transfer function for the control of a Boost converter. It can however predict the TF for a Buck (after one makes the changes explained in previous post).
I do not know what boost factor means. Vout/Vin ?
Sure.Btw , if RLC cannot predict the required transfer function for the control boost converter, is there a way that I can predict the transfer function of it?
Losses in the Boost converter adds limitations to the Vout/Vin gain... however, output should be 75% bigger seems unfounded for me. Output is the necessary one, of course, making sure you can reach it. See below.what I mean by boost factor is Vout/Vin.
To examine action in a boost converter, consider running a slower frequency and/or a smaller Henry value in your inductor. This will produce an Ampere waveform which ramps up and down in an obvious manner.
This simulation is a simple boost converter concept. 1.2V DC stepped-up to 2.5VDC. It is in continuous-conduction mode.
Inductor and switching frequency are less than values specified by your calculations above.
Btw, can I ask what is the purpose of the resistor prior to the nmos/nfet switch,is it a driver? Also in your clock, can I ask what value of duty cycle you have used?
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