meltbox360
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I am trying to design a motor controller (H-Bridge) capable of 100 amps continuous. I have switched mosfets multiple times since I am unsure of what type of mosfet would be best for this sort of job. I read DirectFET mosfets are good for use with heatsinks however they don't seem especially price effective. The mosfet I want to use is a sot404 d2pak mosfet model BUK664R6-40C,118 due to its combination of logic level gate and ability to carry a fair bit of current. The thing that is keeping me back is that I read d2pak conducts heat to the pcb. This would mean a heatsink on the package wouldn't cool it well?
If anyone has a better suggestion along with a driver that can drive a few mosfets in parallel at a time I would also welcome that but the main question is what are the advantages of surface mount high power vs through hole as well as the advantages of the various packages. Thanks :grin:
EDIT: Current plan is to use the lm27222 as a driver and a 7805 to power it limiting me to about 500ma-1a drive current.
If anyone has a better suggestion along with a driver that can drive a few mosfets in parallel at a time I would also welcome that but the main question is what are the advantages of surface mount high power vs through hole as well as the advantages of the various packages. Thanks :grin:
EDIT: Current plan is to use the lm27222 as a driver and a 7805 to power it limiting me to about 500ma-1a drive current.