Is it possible to use a lower motor voltage than 8.5V by using a different voltage supply for the VM pin than the actual motor voltage supplied to the half bridges? For example, would there be an issue if I supply the VM pin with 15 VDC and the half bridges 5 VDC? See example in the image below. The only consideration that I can think of is the gate-source voltage of the FETs. Is there anything else?