max 48V voltage in STEVAL-SPIN3202?

[RSege.1]

I want to use the STEVAL-SPIN3202, but the max voltage is 6.7 V to 45 V.

Can't I use 48V as the max voltage? my motor is rated at 48V.

I saw that the STD140N6F7 which is incorporated in the design is 60V...

thanks

[Danish1]

The data sheet for STSPIN32F0A says the recommended operating conditions only go up to 45 V (I know absolute max is 48, but ST don't guarantee correct operation at that voltage). So no that's not a safe thing to do.

Hope this helps,

Danish

[RSege.1]

Yes but why? did you look at the schematic? I did, and I saw no reason to use 48V. I would like to get an answer which is based on the schematic.

Thanks.

[Danish1]

Are you talking about the schematic of the evaluation board, or the schematic of the system-in-package (SIP) device itself (DocID030766 Rev 2.0)?

I was talking about the SIP, part number STSPIN32F0A, NOT the evaluation board STEVAL-SPIN3202 for which ST publish the schematic.

Although the SIP shows a block diagram on page 6/41, it does not go into the detailed specifications of any of the building-blocks.

As to why, I can't say. Maybe one of the regulators or driver transistors (none of which are specified anywhere in the documentation) can't take the voltage. Or could it be that a linear regulator can't deliver the necessary current without dissipating too much power? Or a switching regulator would need a bigger inductor to control the current?

[Mohamed eleuche]

Actually it is almost the same question I want to ask. I want to add that in the schematic of the steval_spin3201 the VBUS and the VM are connected with JP2.

My question is: if we supply VBUS with 48V and open JP2 can we regulate the Vbus to , let say 24V , and connect to VM?

My other question can we use a higher current motor since the Mosfets STD140N6F7 have Id 80A?

[Laurent Ca...]

Dear @Mohamed eleuche​ 

If you have still this problem, please open a new post about.

Best regards

Laurent Ca...