Schematics R14, R15

[MarkoBursic]

Hi, I have been redirected from your blog site https://www.ptdreamer.com/ where you posted a schematics. Well the resistor R15 is misplaced. With R14 they should form a voltage divider, so that gate voltage doesn't goes above Vgs max. In your scenario this is 24V and slow turn off time (R14+R15). In my opinion the R15 goes in series with T1's collector.