Control circuit for multiple high side switches

A method for switching on a plurality of parallel high side switches of a respective plurality of parallel bridges in a respective plurality of different phases;

• the method comprising
• providing an electrical charge using a charge provisioning unit;
• and
• during each of the plurality of different phases, arranging the charge provisioning unit via a plurality of high control switches in parallel to a gate-source capacitance of a respective high side switch from the plurality of high side switches, to switch on the respective high side switch;
• wherein the charge provisioning unit comprises a transformer and a pulse generation unit at a primary side of the transformer,
• wherein the high control switches are controlled to temporary couple a secondary side of the transformer in parallel to the gate-source capacitance of the respective high side switch.

A method for controlling a plurality of parallel high side switches of a respective plurality of parallel bridges;

• comprising the steps of:
• providing a charge provisioning unit to provide an electrical charge, the charge provisioning unit comprising a transformer and a pulse generation unit at a primary side of the transformer;
• providing a plurality of sets of high control switches for the plurality of high side switches, respectively;
• wherein the sets of high control switches are controlled to temporary arrange a secondary side of the transformer in parallel to a gate-source capacitance of a respective high side switch;
• controlling, during a phase of a plurality of different phases, a respective set of high control switches from the plurality of sets of high control switches to arrange the secondary side of the transformer 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;
• and
• controlling the pulse generation unit to generate a charge pulse for charging the gate-source capacitance of a high side switch in synchronicity with controlling the respective set of high control switches.