Timeline for Why do I keep burning my mosfet?

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Apr 13 '17 at 12:32 history edited CommunityBot
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May 26 '15 at 17:55 answer user76844 timeline score: 0
May 26 '15 at 15:52 history edited Miguel El Merendero CC BY-SA 3.0
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Apr 24 '15 at 0:08 history tweeted twitter.com/#!/StackElectronix/status/591393337237712897
Apr 23 '15 at 15:22 comment added Tut You need to add a bypass capacitor to your MOSFET driver. From the datasheet: "The VDD input should be bypassed to ground with a local ceramic capacitor. The value of the capacitor should be chosen based on the capacitive load that is being driven. A minimum value of 1.0 µF is suggested."
Apr 23 '15 at 15:00 history edited Miguel El Merendero CC BY-SA 3.0
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Apr 23 '15 at 14:51 comment added shortCircuit you should have a resistor instead of that diode to regulate the gate current of your MOSFET
Apr 23 '15 at 14:45 answer Spehro Pefhany timeline score: 5
Apr 23 '15 at 14:25 comment added Andy aka Have you considered the starting and stall current of the motor? This could also be many tens of amps and destroy the MOSFET. The mosfet could be dissipating 200 watts as it warms up to destruction point.
Apr 23 '15 at 14:21 comment added Tom Carpenter If you ware worried about the gate driver, then try it with maybe a 10Ohm or so resistor between the driver and the gate, that will help you identify if the problem is current spikes when switching the transistor. Lose the diode, it will not help you at all.
Apr 23 '15 at 14:18 comment added Miguel El Merendero @WhatRoughBeast that's some precious advice, I'll try that. Anyway, the Shottky and the mosfet are installed on a big aluminium heatsink.
Apr 23 '15 at 14:17 comment added Miguel El Merendero @AndyAka, I still don't have a working system so I can't say my previous question was answered satisfactorily. I assure you I'll accept the answers at the proper time.
Apr 23 '15 at 14:17 comment added Miguel El Merendero @TomCarpenter, I put that diode after burning a couple of drivers. I do agree it's not ok for the mosfet, I just want to understand why i keep burning it, then I'll get rid of the diode.
Apr 23 '15 at 14:15 comment added WhatRoughBeast You don't say how you're heatsinking your MOSFET. Plus, try replacing your motor with a 100-ohm, 20 watt resistor, and use that to troubleshoot.
Apr 23 '15 at 14:14 answer Olin Lathrop timeline score: 15
Apr 23 '15 at 14:07 comment added Andy aka I agree with the above. Also, if your previous question was answered satisfactorily why not consider "accepting" the best answer?
Apr 23 '15 at 14:06 comment added Tom Carpenter Why do you have a diode between the MOSFET driver and the gate signal? That will mean that the transistor never gets turned off.
Apr 23 '15 at 14:03 history asked Miguel El Merendero CC BY-SA 3.0