Circuit for Driving a Power Switch

An electronic circuit comprising:

• a first power switch coupled to a second power switch via a switching node;
• a driver coupled to the first power switch, wherein the driver comprises an energy storing element coupled to the switching node;
• a sensor to sense an electrical parameter of the driver;
• and
• a charger coupled to the sensor and to the energy storing element, the charger being adapted to provide a charge current to charge the energy storage element, and to control the charge current based on the electrical parameter;
• wherein the driver is adapted to provide a drive voltage to the first power switch, and wherein the electrical parameter is indicative of the drive voltage;
• wherein the driver comprises a first transistor adapted to control the drive voltage;
• and wherein the sensor comprises a second transistor coupled to a first current source;
• wherein the second transistor is substantially identical to the first transistor.