DC Motor controller

I have not used this part but it looks simple. (uses a p-fet) But it looks like it would take 60 to 70V and buck it down to run the motor. It the running current is 10A you probably need a 20 to 30A supply. That might be too much for a p-MOSFET.
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Here is another higher current option. N-MOSFETs Should run with less losses. I have not used this exact part but parts like this.
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