How to use TopSPICE to run a Frequency Response Analysis.

[@RobertBolanos]

In this video. I try to duplicate Dr. Ridley's FRA analysis of a buck converter. I used TopSPICE to duplicate his Bode Plot. I show tips on how to speed up the simulations by using ideal components. I then run a FRA analysis on a much more complicated flyback converter which is a more robust test of the FRA. TopSPICE has an FRA menu to help you setup the analysis. If you like this video, please subscribe, share and give a thumbs up. Question or comments can be sent to [e-mail] or be posted here on my KZbin channel.

[@karastom2304]

Very good Robert, we learn a lot from you, I do have a question no related to the subject, is why we can not put large filter at the input of Schmitt trigger inverter , or how can I figure the maximum capacitor value I can use to avoid shoot through for the CMOS inside the Schmitt trigger.

[@TimVT971]

Good stuff Robert. I am always glad when you post a video.

[@RobertBolanos]

Thank you !

[@poll1986]

Dear Robert, Many thanks for sharing such valuable information with us. I would appreciate it if you could create a video specifically for hardware considerations for Space applications. What kind of challenges do you face and how to choose components for space-related applications. Many thanks Huseyin

[@RobertBolanos]

Yes, that would be a great subject. Let me see what I can do. Robert

[@kubendrangovindasamy3161]

Hi Sir, Thanks for shared the very useful video.

[@RobertBolanos]

You are welcome

[@Yorumcu63]

You have amazing knowlodge .Could you make a video about your desing 0-30 Volt adjustable and 0-5 ampere current limiting feature SMPS DC power supply (for our electronic lab.) I mean input AC 110-220 output low noise 0-30 volt DC Current Adjustable (limiting )0-5 ampere .Short circuit protect Low budget (Economical) I sure so much people like this project

[@Ramkumar-le4me]

Tnanks Robert..Is the forward converter design video is over ??

[@RobertBolanos]

I am planning on making more videos on forward converters. Just been very busy at work. Thanks for the question!

[@Ramkumar-le4me]

@@RobertBolanos Thanks for the reply. Iam waiting for more videos about forward and push pull converter

[@user-power_electronics]

Thank you for sharing this FRA analysis. Question on the Buck model, Is this a current mode control model ? If yes, why use Type 3 compensation circuit ?

[@user-power_electronics]

It looks like Ridley model is a Buck converter and yours model has a current sense feedback circuit which made me confuse as a current mode cotnrol loop.

[@RobertBolanos]

Dr. Ridley used a voltage mode controller. So I duplicated his circuit using a voltage model PWM from Basso. Thanks for the question.

[@user-power_electronics]

@@RobertBolanos Hi Robert, do you know why C Basso PWM Voltage mode model has current sense feedback ?

[@RobertBolanos]

@@user-power_electronics yes. You can put a current sense to monitor the output current by using a comparator. If the current exceeds the current limit, it can shutdown the PWM and prevent damage to load and to power supply.

[@user-power_electronics]

@@RobertBolanos Thank you