Patent ID: 9407132
Filing Date: 2016-08-02
CPC Classification: H02M,H03K

Claim Text:
1. A control circuit for controlling a plurality of parallel high side switches of a respective plurality of parallel bridges; the control circuit comprising a charge provisioning unit configured to provide an electrical charge; a plurality of sets of high control switches for the plurality of high side switches, respectively; wherein each set of high control switches is configured to arrange the charge provisioning unit in parallel to a gate-source capacitance of the respective high side switch; and a controller configured to, during a phase of a plurality of different phases, control a respective set of high control switches from the plurality of sets of high control switches to arrange the charge provisioning unit in parallel to the gate-source capacitance of the respective high side switch from the plurality of high side switches, to switch on the respective high side switch; wherein the controller is configured to generate a first charge pulse for a first high side switch from the plurality of high side switches with the electrical charge provided by the charge provisioning unit, by arranging the charge provisioning unit in parallel to the gate-source capacitance of the first high side switch for a limited on-pulse duration using a respective first set of high control switches from the plurality of sets of high control switches; and wherein the controller is configured to control the first set of high control switches to couple the charge provisioning unit to a gate and source of the first high side switch for the on-pulse duration; and to decouple the charge provisioning unit from first high side switch subsequent to the first charge pulse, such that the gate of the first high side switch is floating.