Hi Electron,
thanx for the tips. I will surely buy that book too, because analog design is my passion.
Actually, I solved everything by hand, and used Maple to check those really long equations for me. And believe me... this simple 2nd order system gets REALLY difficult.... I did not know about...
Thanx for the tips! I will surely buy that book.
Okay, here is a detailed question.
I have modelled an error-amp, consisting of an opamp with +2,5V reference at V+. At V- there is the compensation consisting of C1 + R//C2. The input of the system is a normal voltage divider, like in most SMPS...
oh sorry...
I gave a wrong explanation.
The website you sent to me, look at the first buck converter. That is exactly what I'm using. So the source of the N-channel BUZ11 is connected directly to the inductor. The gate goes to the totempole, and drain to the +12V source.
The diode is 1N4148. I...
Well, I have tried different totempole transistor pairs. Also BD139 type with its complementary.
The circuit is a very simple buck converter with a SG3525 controller.
The drain-source voltage is also equal to 12V. That means, equal to the gate-source voltage.
drain-source = gate-source = +12V...
how can I tell Matlab to solve an equation symbolically without giving values to the variables? For example: 2x + 5 + 6x will become 7x + 5.
Thanx in advance!
The FET is of type BUZ11.
The totempole consists of 2N3904 and its complementary.
The main issue is that the FET receives 12V whereas the drain-source voltage is also equal to 12V. I can't use more than 12V because the circuit is intended for a car battery.
Any suggestions?
How does the error-amp of a switch mode power suply work? I know a lot about it already, but:
- I don't know at which frequencies to place the poles and zeros;
- how much should the phase shift be?
- how to choose the component values?
thanx again
I saw many circuits on the internet with totempole drivers for FETs. Now I built such a totempole in a SMPS, but it doesn't work correctly. Now someone told me that a levelshifter should ALWAYS be used, even with totempole. The reason: when the mosfet is ON, the gate-drain voltage will both be...
