Hi
I built a full bridge SMPS with IR2110 + boostrap capacitor + old mosfets as recommended, which works fine, but I would like to replace the old mosfets with GT60N321 IGBTs, add a totem array, remove the boostrap and add an isolated power supply of +14VDC and -4VDC to get rid of the Miller effect.
Simply replacing the old mosfets with IGBTs also works, but according to the oscilloscope I see that it would be a good idea to add a totem array and adjust the power supply for the output side of the IR2110. For the power supply of the upper and lower sides, they will use isolated converters designed for driving IGBTs with outputs of +14VDC and -4VDC.Is it possible to keep the IR2110 driver and connect the IGBT and totem array using isolated converters in this way ?
I will adjust the Deadtime only after the circuit with isolated converters and IGBTs works.
Thank you, samponek
I built a full bridge SMPS with IR2110 + boostrap capacitor + old mosfets as recommended, which works fine, but I would like to replace the old mosfets with GT60N321 IGBTs, add a totem array, remove the boostrap and add an isolated power supply of +14VDC and -4VDC to get rid of the Miller effect.
Simply replacing the old mosfets with IGBTs also works, but according to the oscilloscope I see that it would be a good idea to add a totem array and adjust the power supply for the output side of the IR2110. For the power supply of the upper and lower sides, they will use isolated converters designed for driving IGBTs with outputs of +14VDC and -4VDC.Is it possible to keep the IR2110 driver and connect the IGBT and totem array using isolated converters in this way ?
I will adjust the Deadtime only after the circuit with isolated converters and IGBTs works.
Thank you, samponek
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IGBT having threshold around 6 V does not need negative supply for driving. Neither do MOSFET's. Big modules are different beasts. Is price the only point of using dying technology (IGBT)?