DC-DC switching converter with adjustable driving voltages

An electronic system comprising:

• a controller;
• a power source;
• and
• a switching converter comprising:
• a switching stage comprising first and second switching devices configured to receive an input voltage and provide an output voltage,
• a driving stage comprising first and second driving devices configured to drive the first and second switching devices, respectively,
• a current sensing circuit configured to sense an output current provided by the switching stage,
• a voltage generation circuit comprising first and second voltage generation stages, the first voltage generation stage configured to generate a first supply voltage to power the second driving device according to the output current, the second voltage generation stage configured to generate a second supply voltage to power the first driving device according to a reference voltage corresponding to the first supply voltage, the voltage generation circuit configured to adjust the first or second supply voltages according to the output current sensed by the current sensing circuit, and
• a charge recovery stage configured to;
• selectively store a first electric charge being lost from the first driving device during driving of the first switching device based on a comparison between the first and second supply voltages, and
• release, at least partially, the stored first electric charge to the second driving device during driving of the second switching device to, at least partially, compensate for a second electric charge being lost from the second driving device during driving of the second switching device.

A method for converting a direct current input voltage into a direct current output voltage with a switching converter, the method comprising:

• driving a switching stage of the switching converter with a driving stage of the switching converter, wherein the switching stage comprises first and second switching devices for receiving the direct current input voltage and for providing the direct current output voltage according to the direct current input voltage, and wherein the driving stage comprises first and second driving devices for driving the first and second switching devices, respectively;
• sensing an output current provided by the switching stage;
• generating first and second supply voltages to, respectively, power the second and first driving devices, wherein generating the first supply voltage comprises adjusting the first supply voltage according to the output current being sensed, and wherein generating the second supply voltage comprises generating the second supply voltage based on a reference voltage corresponding to the first supply voltage;
• and
• selectively storing a first electric charge being lost from the first driving device during driving of the first switching device based on a comparison between the first and second supply voltages, and
• releasing, at least partially, the stored first electric charge to the second driving device during driving of the second switching device to, at least partially, compensate for a second electric charge being lost from the second driving device during driving of the second switching device.