Controller for switching converter

A power converter system comprising a switching converter for receiving an input voltage, generating an output voltage and providing a load current to an electrical load, the switching converter comprising:

• one or more power switches;
• an inductor;
• and
• a controller configured to drive a switching operation of the one or more power switches to provide:
• a magnetization phase where an inductor current flowing through the inductor increases to a peak current value that is dependent on the load current;
• and
• a demagnetization phase where the inductor current decreases from the peak current value;
• wherein the controller comprises:
• a switch driving circuit configured to provide one or more switch driving signals, each of the one or more switch driving signals being configured to control the switching state of one of the one or more power switches, thereby driving the switching operation of the one or more power switches;
• and
• a load current determination circuit configured to:
• receive a first signal that is dependent on the load current;
• and
• adjust the one or more switch driving signals using the first signal to provide the peak current value that is dependent on the load current.

A method of controlling a switching converter for receiving an input voltage, generating an output voltage and providing a load current to an electrical load,

• the switching converter comprising:
• one or more power switches;
• and
• an inductor;
• wherein the method comprises:
• driving a switching operation of the one or more power switches using a controller to provide:
• a magnetization phase where an inductor current flowing through the inductor increases to a peak current value that is dependent on the load current;
• and
• a demagnetization phase where the inductor current decreases from the peak current value;
• providing, using a switch driving circuit, one or more switch driving signals, each of the one or more switch driving signals being configured to control the switching state of one of the one or more power switches, thereby driving the switching operation of the one or more power switches;
• receiving, at a load current determination circuit, a first signal that is dependent on the load current;
• and
• adjusting, using the load current determination circuit, the one or more switch driving signals using the first signal to provide the peak current value that is dependent on the load current.