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Electronics => Beginners => Topic started by: Patrick66 on January 07, 2024, 08:37:16 am

Title: Couple inductor current spike in flyback converter
Post by: Patrick66 on January 07, 2024, 08:37:16 am

Hello, I would like to ask why is there a sudden current spike when the inductor current increases or decreases? Thank you.

Title: Re: Couple inductor current spike in flyback converter
Post by: MarkT on January 07, 2024, 10:02:28 am

Well you are driving a MOSFET from a perfect voltage source, and since MOSFET gate is basically a capacitor you'll be seeing immense current spikes.  Add 10 to 100 ohms in series with the gate to stop this.

Title: Re: Couple inductor current spike in flyback converter
Post by: Patrick66 on January 07, 2024, 03:07:50 pm

Hello Sir, do you mean like this ?