Patent ID: 9397597
Filing Date: 2016-07-19
CPC Classification: H02P

Claim Text:
1. A process of establishing an adapted blanking period in a pulse width modulated cycle providing current through a motor winding to a set point level of motor winding current ITRIP, comprising: (a) storing a minimum blanking period value in a minimum register and a maximum blanking period value in a maximum register; (b) passing a motor winding current through the motor winding and parasitic tank circuitry coupled to the motor winding, the parasitic tank circuitry including a sensing resistor; (c) sensing a motor winding current through the resistor; (d) determining in controller circuitry the adapted blanking period based on the sensed motor winding current; (e) limiting the adapted blanking period to be between the minimum blanking period value and the maximum blanking period value; and (f) blanking the sensing of the motor winding current during the adapted blanking period.