i finally read the manual and found it very useful. i now wanted to start simulating the circuits. I wanted to know which is the best software to do so. I was thinking of using matlab. Also i wanted to know what are the issues in present day dc/dc buck converters which are used.
can someone please help me with this converter in simulink. I am not understanding how to get this pwm operating.
this is a buck converter intended for 1Mhz operation
capacitor 3.75u
inductor 1.5u
input voltage 4V
expected output 7.5V
sorry for the mistake. The expected output is not 7.5 its 1.75V
I was not getting the pwm to work for the Mosfet switches. Wanted to know about the compensation network needed for the converter. How to go about designing one.
Thanks
To get a grasp as to the interaction beween operating frequency, duty cycle, and output volt level at the load...
it helps to have an animated interactive simulator. (It helped me.)
Screenshot:
The link below will open falstad.com/circuit, load my schematic, and run it on your computer. (Click Allow to load the Java applet.)
https://tinyurl.com/cp4akee
Click on the switch at left to begin the switch-'On' cycle. Let up to see the switch-'Off' cycle.
The idea is to click it at the correct rate, so that you get 1MHz, and 1.75V on the load. (I used an arbitrary load resistance.)
The coil is the center of action. Watch the waveform through the coil.
That's pretty funny. To me at least. Because the last DC-DC
I designed took us 3 years and half a dozen spins to get all
wrung out, and I was only responsible for some pieces of it -
team of three, all very experienced.
So it ought to fit nicely within your semeter of time and your
available level of effort.
Your technology will be driven primarily by your VIN supply
and how heroic you want to be in accommodating it (natural
device, or some stack-of-N scheme with appropriate isolation
technology). Speed is seldom the concern since users have
a hard time getting passives that support high frequency
operation anyhow.
And for it to be practical what should i look into. Reference material is needed
Please someone help me with this ckt. Expected output is 5V . why it is not working ?
- - - Updated - - -
but it works if i directly connect as in the second pdf
I] I am not able to understand this working.In the first image(named T1) it is said energy stored in C1 is discharged to L1 via Q1.
why dosent the energy in C1 flow directly to L7 ?
Also it is said C3 transfers its energy to L5 since it has no other path for its energy to discharge . But it is connected to ground, cant it discharge to ground ?
II] in the second image(T2) how is the current flowing through L3-L6-L8.
can some one explain the working of this please
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?