Hi, regarding the explanation at 2:45, I see you caught some values from core's datasheet. How did you find Np=44 turns? Is the flux calculated as 180 (exp-3) and the area as 182 A.U. ?
Thank you very much. Can I ask if when selecting the switching power transistor, should I use the total peak current in the primary or 1/2 peak current; since each transistor conduct at half cicle, please? Thanks in advance.
Please consider full Peak current for each Transistor because only one transistor is on each time & all current flows through it. Thank you so much for watching the video!
ton is the time where MOSFET stays ON. 0.4Tesla is the change in flux density in a ferrite core of the transformer. Thank you so much for watching the video!
@@FoolishEngineer Thank you Sir. I just wanted to be sure, since I see in your second part of push pull converter design, in minute 2:48 the following: Nmpp= Vp*ton/B*Acp= 180*.4T/180m*182mm2, in this .4T , T is for Tesla or for ton, since T is in capital letter? Thank you very much for taking your time to respond.
Hi there, I did not get the calculation what you have done regarding the number of turns. What is 0.4T ? T is what ?? Can you show me the exact calculation including each and every unit ? How did you get 44 ? Thanks in Advance. :)
Hi, Have you checked the 1st part of this series? T is Tesla, it is the unit of magnetic flux density. I request you to refer the earlier video, You will understand.
@@FoolishEngineer Hi, I have a question How did you get the primary number of turns is 44? By putting the values (Vp = 180V, ton = 0.4, B= 180x10^-3 T, A = 182mm^2) in the formula Nm = Vp*ton/B*A. I did not find the answer 44. Can you please explain that?
Thanks for sharing your video but i don't see how you got 44 in the calculation. In the reply's others have asked the same question but not straight answer. Can you please share units exactly so I can understand how you arrived at 44 turns.
FYI for others 20usec is the period (T) which is 1/50kHz which was the operating frequency. So number to put into calculator are Np = (180*.4*20)/(.180*182)=44 FYI on my last reply the 180mm^2 should have been written as 182mm^2. Please explain if i am wrong thanks!
very good ...i want know about high current power supply so ..how can we get 60 v 40 A current from like smps circuit ..if push pull converter can help or flyback is help ..or we need any other circuit like current doubler rectifier..please give me information..thank you...
The topology of the converter depends on the power which it can handle not solely voltage or current, in my video of how to design an smps I have shown a table regarding power handling capacity of particular converters link is - ruclips.net/video/8i57vFZrUm4/видео.html From time 2.33
Hi... Nice video on push pull. I have one question, in push pull topology primary and secondary currents are present at the same time. So the core area has both pri and sec flux present at any point of time. If this is correct then should the flux density need to be taken half i.e. 0.09 Tesla while calculating the number of turns?
Thanks for your usefull video. I want to make an self oscillating push pull dc dc converter. Can you help me how to do that? I have removed the epoxy of MINMAX MAU216. Unfortunately the transformer gets damaged during the process. but what I realised was interesting. It has no switching controller. It works upon the theory of self oscillating inverter. I would appreciate your guide....
Hello! Sir, excuse me, it is me again with a question, in your simulation I obseved you used 22+22and 13+13 turns, but in the calculations you did is 44 and 26, Which is the number should be used: 44+44 and 26+26 or 22+22 and 13+13? Thaks again and excuse me, I'm just trying to be sure befores to build my planned project, and thank you for helping me.
All the formulae will be same, just wattage of the components will change and of course in that case secondary turns will be greater than that of primary
Feedback is basically a comparator and PWM IC which can be a PI or PID logic. I don't have much of the details, this tutorial is regarding the basic calculations needed for the push-pull converter. Still, I'll try to upload a strong content regarding feedback circuit soon.
So if I may ask this question if the dcv increases to over 40 volt the mosfets switching star to slow down causing short circuit burn up the mosfets because one mosfet can t no turning off faster enough but what about pnp and diodes to driver the mosfet full on and fully off I don’t up understand how switching dead time cause short circuit burn up the fet because I need a 10kw of power from 50 volt dcv to 400volt but I can’t get this to work I increase dead time by 5% it can go no more of one fet will turn off fully zero pulse volt to get I try it no matter the dead time mosfet still burning up at no load I design a lot of converter because i am engineer this issue was from engineer school day push pull burn up at higher volt even with righ gate drivers the higher the volt the worst the mosfet get
Great video! I like your straightforward and concise explaination. At the same time you also cover the core concepts. Good work.
thank you so much!!
Hi,
regarding the explanation at 2:45, I see you caught some values from core's datasheet. How did you find Np=44 turns? Is the flux calculated as 180 (exp-3) and the area as 182 A.U. ?
It's the other way around
thank you sir
Thank you so much for watching!! Please don't forget to subscribe to our channel
Thank you very much. Can I ask if when selecting the switching power transistor, should I use the total peak current in the primary or 1/2 peak current; since each transistor conduct at half cicle, please? Thanks in advance.
Please consider full Peak current for each Transistor because only one transistor is on each time & all current flows through it.
Thank you so much for watching the video!
Great video thanks. I want to use the push pull converter in micro inverter design. Where can l get all the information you provided?
Please explain snubber circuit in an smps
Sure!! Thank you so much for watching!!
Thank you again. Can you tell me what ton and 0.4T mean in this tutorial, please.
ton is the time where MOSFET stays ON. 0.4Tesla is the change in flux density in a ferrite core of the transformer.
Thank you so much for watching the video!
@@FoolishEngineer Thank you Sir. I just wanted to be sure, since I see in your second part of push pull converter design, in minute 2:48 the following: Nmpp= Vp*ton/B*Acp= 180*.4T/180m*182mm2,
in this .4T , T is for Tesla or for ton, since T is in capital letter? Thank you very much for taking your time to respond.
thanks a lot sir
Thank you so much for watching!! Please don't forget to subscribe to our channel
Hi there, I did not get the calculation what you have done regarding the number of turns. What is 0.4T ? T is what ?? Can you show me the exact calculation including each and every unit ? How did you get 44 ?
Thanks in Advance. :)
Hi, Have you checked the 1st part of this series? T is Tesla, it is the unit of magnetic flux density. I request you to refer the earlier video, You will understand.
@@FoolishEngineer Hi, I have a question How did you get the primary number of turns is 44? By putting the values (Vp = 180V, ton = 0.4, B= 180x10^-3 T, A = 182mm^2) in the formula Nm = Vp*ton/B*A. I did not find the answer 44. Can you please explain that?
I am looking for efficiency of 0.9, can push pull topology ensure such a value?
Yes, it is possible!!
Thanks for sharing your video but i don't see how you got 44 in the calculation. In the reply's others have asked the same question but not straight answer. Can you please share units exactly so I can understand how you arrived at 44 turns.
The only way I can see to get 44, because you show no units is ton needs to be in usec so Np=180V*(.4*20uSec)/(.180T * 180mm^2)=44 turns.
FYI for others 20usec is the period (T) which is 1/50kHz which was the operating frequency. So number to put into calculator are Np = (180*.4*20)/(.180*182)=44
FYI on my last reply the 180mm^2 should have been written as 182mm^2. Please explain if i am wrong thanks!
Please built one hardware testing for this using sg3525
Sure!!
very good ...i want know about high current power supply so ..how can we get 60 v 40 A current from like smps circuit ..if push pull converter can help or flyback is help ..or we need any other circuit like current doubler rectifier..please give me information..thank you...
The topology of the converter depends on the power which it can handle not solely voltage or current, in my video of how to design an smps I have shown a table regarding power handling capacity of particular converters
link is - ruclips.net/video/8i57vFZrUm4/видео.html
From time 2.33
Hi... Nice video on push pull. I have one question, in push pull topology primary and secondary currents are present at the same time. So the core area has both pri and sec flux present at any point of time. If this is correct then should the flux density need to be taken half i.e. 0.09 Tesla while calculating the number of turns?
many thanks my dear
Thank you so much for watching!!
Can solar charge controller be achieved through this topology?
Sure!!
@@FoolishEngineer thank you sir, but can you please assist me with schematic diagram of pwm to switch the mosfet on?
Thanks for your usefull video. I want to make an self oscillating push pull dc dc converter. Can you help me how to do that? I have removed the epoxy of MINMAX MAU216. Unfortunately the transformer gets damaged during the process. but what I realised was interesting. It has no switching controller. It works upon the theory of self oscillating inverter. I would appreciate your guide....
Can you share me your circuit & references?
Does this require snubber circuit???
For simulation? no.
But in real hardware? it might.
Because I have built hardware , the MOSFET is getting burnt due to high dvdt and vds is breaking down
could you write down here the resources of these calculations, pls?
You can upload the psim file for this simulation
you rock!
thank you!!
Hello! Sir, excuse me, it is me again with a question, in your simulation I obseved you used 22+22and 13+13 turns, but in the calculations you did is 44 and 26, Which is the number should be used: 44+44 and 26+26 or 22+22 and 13+13? Thaks again and excuse me, I'm just trying to be sure befores to build my planned project, and thank you for helping me.
Please use 22+22 and 13+13
@@FoolishEngineer Thanks that much again; my doubts are gone.
Thanks
Thank you so much for watching!!
This video was for buck! can you make video for push pull Boost? or is it that we just need to reverse the transformer primary and secondary?
All the formulae will be same, just wattage of the components will change and of course in that case secondary turns will be greater than that of primary
May i get the full circuit and the details of the feedback circuit through my email sir?
Feedback is basically a comparator and PWM IC which can be a PI or PID logic. I don't have much of the details, this tutorial is regarding the basic calculations needed for the push-pull converter. Still, I'll try to upload a strong content regarding feedback circuit soon.
So if I may ask this question if the dcv increases to over 40 volt the mosfets switching star to slow down causing short circuit burn up the mosfets because one mosfet can t no turning off faster enough but what about pnp and diodes to driver the mosfet full on and fully off I don’t up understand how switching dead time cause short circuit burn up the fet because I need a 10kw of power from 50 volt dcv to 400volt but I can’t get this to work I increase dead time by 5% it can go no more of one fet will turn off fully zero pulse volt to get I try it no matter the dead time mosfet still burning up at no load I design a lot of converter because i am engineer this issue was from engineer school day push pull burn up at higher volt even with righ gate drivers the higher the volt the worst the mosfet get
PLEASE DEAR FRIEND, PUT PORTUGUESE LEGENDS AGAIN OK ???
okay, Thank you so much for watching!! Please don't forget to subscribe to our channel
Sir please remove the background music , it's really irritating , can't concentrate on what you're explaining