Hello all. I am a newbie to this forum and a newbie to electronics. I have read a lot about h-bridges, and would like some feedback to some basic questions.
I have 50 VDC motors that I want to use PWM to drive them in a CNC router.
The motors have a 6 amp stall current (tested with 50 VDC) so I have not planned any current limiting....is this bad?
The Mosfets are rated for 55 VDC....is this enough since I am driving them on with a high side driver?
What should the bootstrap capacitor and diode be rated for?
I hooked it up on a breadboard. The scope without the 50 VDC looked like I expected, then I added the 50 VDC...still looked good on the scope, I hooked up the motor and smoke came up from the fan73832.
Any comments or suggestions would be appreciated.
I have 50 VDC motors that I want to use PWM to drive them in a CNC router.
The motors have a 6 amp stall current (tested with 50 VDC) so I have not planned any current limiting....is this bad?
The Mosfets are rated for 55 VDC....is this enough since I am driving them on with a high side driver?
What should the bootstrap capacitor and diode be rated for?
I hooked it up on a breadboard. The scope without the 50 VDC looked like I expected, then I added the 50 VDC...still looked good on the scope, I hooked up the motor and smoke came up from the fan73832.
Any comments or suggestions would be appreciated.
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