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Recent content by gta18

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    [SOLVED] Help Identify IRF2907 driver in the circuit shown

    Help Identify IRF2907 driver in the circuit shown--- better illustration Hi, I need help to identify what kind of driver is used in the schematic below. circuit is used to maintain the right voltage on a capacitor bank. I think its a high and low side driver but I searched several...
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    fan7390 High and low side mosfet driver Rboot and Cboot question

    Hi, I was looking to use this fan7390 half bridge driver and the datasheet didn't say how to choose the right values for the rboot and cboot. how are the values calculated? and also what kind of dboot do i need? or do you guys have a sample circuit that has been tested? here's the Datasheet...
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    Mosfet Driver Design, gate resistor question

    what would be considered as fast switching? How about my application of 500Hz?
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    Mosfet Driver Design, gate resistor question

    Does the wiring connection fron the high side mosfet change when using the bjt? How do i know if my gate driver has sufficient current to drive the mosfets in parallel? (will the output square wave change if i dont have enough drive current?
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    Mosfet Driver Design, gate resistor question

    I summed up the q's of the 5 mosfets and ended up with about 300nC, the driver fan7392 is capable up to 3Amps. Wouldnt the bjt slow down the response of switching?
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    Mosfet Driver Design, gate resistor question

    Thanks for the quick reply. Ill try to do 10ohms on ea mosfet. If it doesnt work, have u ever tried putting the gate drivers output in parallel too?
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    Mosfet Driver Design, gate resistor question

    I am currently trying to design a mosfet driver for a home made ac tig welder. Having the max frequency of say 500hz on the output of the bridge inverter and a constant 20v supply for the gate driver circuit, what do you think will happen if I put say 4 sets of 5 mosfets in parallel to build...

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