all home built solar system

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Haxby Guru Joined: 07/07/2008 Location: Australia Posts: 423	Posted: 09:01am 01 May 2021         wiseguy said   Haxby, I couldn't do a better job describing IGBT's than these 2 application notes I will link to: App note 1) Infineon-EiceDRIVER-Gate_resistor_for_power_devices-AN-v01_00-EN.pdf App Note 2) AN-7003_Gate_Resistor-Principles_and_Applications_rev00.pdf Warp and Solar Mike have a lot more experience with IGBT's so I would rely on their help and the App notes to find your solution. As you will see from the App notes larger gate resistors than MOSFET's use are common. The problem and solutions we are discussing here are less relevant than with IGBTs they are a bit different when it comes to problems, causes and solutions. Wiseguy: that was a good read. Basically sums it all up nicely. Particularly the dv/dt and di/dt issues, which are amplified when switching higher voltages. One thing that surprised me is in the second link it says that the "on" gate resistor is usually lower value than the "off" resistor. In my experience it is the opposite, though most designs I see refer to MOSFETs not IGBTs. Any insights on this?   Poida: have a look at the Hi-Link dc-dc range if cost is an issue.