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powerstep01 with high voltage design

Question asked by Zheng Liang on Jul 17, 2017
Latest reply on Jul 19, 2017 by Zheng Liang

I'm using X-NUCLEO-IHM03A1 to evaluate the powerstep01 chip, and learn the design around the chip on PCB, but the MAX Voltage is confusing me to design with components. the evaluation board is printed with "50V MAX", but I checked the BOM, and found that the rating voltage of capacitors connected with VS are 100V, could this board run with 80V?(I have only one board shipped from USA, it will take long time on shipping for new one if I damaged this one). If not, what limit the MAX Voltage of this board?

 

Is there exist the possibility of spike on VS from motor with auto-adjusted current mode or voltage mode?

 

If I wanna drive with highest voltage of this chip, how much the rating voltage of capacitors should I used, 100V or 160V ? and how to chose the value of capacitor for the motor runing, something else should I be noticed in this design?

 

Thanks,

Zheng

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