Recent content by Ms FYP

hi gnurf, many thanks for your replied.. here i updated the schematic and waveforms for the circuit. and yet..i still obtained the same vds and ids results..

hi vk6kro, yes, i have measured the voltage across 3.5 ohm resistor and attached is the waveforms. hmm..may i know, is the duty ratio actually effected the switching of the PMOS FET? i mean.. can it become the reason why the Vds and Ids are resulted as shown in previous attachment? this is...

hi berkeman, sorry..just came back from class..here is the current through the inductor for the inductor for the gate drive with respect to ground.

Hi vk6kro, thanks for your replied.. i will try to exchange the position for both of the FETs and see the results.. many thanks~

hi berkeman, thanks for replying my post.. Oh sorry..i miss that one..it should be connected to ground.. Here is the PWM1, PWM2 and input voltage to the inductor. and yes..i'm driving this circuit at high switching frequency, that's why the value of the inductor is small. i have...

Hi, I'm simulating the Synchronous Buck Converter as per attached, to obtain the Vds and Ids for the High Side switch and I'm using P-mosfet as the switch and Microsim PSPICE software to simulate the circuit. once it is done, i obtained the Vds and Ids waveforms as per attached. my...

hi berkeman.. thanks a lot for the recommended books. i will definitely search for them at the library..:smile:

hi berkeman, Thanks a lot for the suggestion..will do my research about it thoroughly..I'm using 'Power Electronic Circuits' from Issa Batarseh as my reference in learning the DC-DC topologies...erm..if it is okay with you, really appreciate that if you could recommend or suggest some other...

hi, many thanks for the replied..yes..to be honest too, I'm actually a little bit confuse with both of the topologies..after my supervisor ask me to upgrade the SBC. Because at first I also thought it is impossible to control both of the switches without the oscillations sources..hmm..I guess I...

hi berkeman... Many thanks for the replied. Before a compensator is built I designed the SBC only with AGD. The first switch (high side), it is been connected to the vpulse (pulse voltage source) and the circuit is work. So I should add an oscillations circuit together with the compensator is...

oh3...is it needed? because i have been consulted by my supervisor and he said that he wanted the SBC to be self-driven. that's why i didn't put it at the first place. thanks..

It is a Gain block with limiter. Means, it increases the voltage from the compensator circuit with a specific gain that have been fixed. I used it to increase the output of the compensator to 5v but I only get 0.2v. And ya, before the block is there, i just manage to get 100-200mV only. So i...

hi berkeman, thanks..hmm..im not using any schottky diodes in the circuit. i think the one that u saw is the GLIMIT component that looks like a diode. thanks..

Hi All, I'm working on my final year project on synchronous buck converter (SBC). In this project, i have to use an adaptive gate drive (AGD) and a compensator to switch on both of the SBC switches. The AGD is connected to the second switch (Low side switch) of the converter meanwhile for the...