Patent ID: 9490730
Filing Date: 2016-11-08
CPC Classification: H02P

Claim Text:
1. A circuit for controlling a multiphase motor, the motor comprising a plurality of windings comprising at least a first winding and a second winding, the circuit comprising: for each winding, a low-side transistor and a high-side transistor for allowing the windings to be energized; for each winding, a low-side diode and a high-side diode for allowing the winding to freewheel from the low-side to the high-side when said winding is not being energized; a controller for driving the low-side transistors and the high-side transistors; and only one or only two current sensors arranged in one of the following configurations: for selectively measuring a first current running through said first winding and a second current running through said second winding; wherein the controller is adapted for repeatedly configuring the low-side transistors and the high-side transistors in such a way that: wherein the controller is further adapted for measuring one of the first and second current during said first time slot using said single current sensor, or said first current sensor, or said second current sensor, and for measuring the other of said first and second current during said second time slot using the same current sensor.