Patent ID: 7880458
Filing Date: 2011-02-01
Classification: H02M

Abstract:
1. A method for driving a converter circuit for supplying a load via a first electronic switch and a second electronic switch alternately turned on and off with a first dead-time interval between turning-off of the first electronic switch and turning-on of the second electronic switch and a second dead-time interval between turning-off of the second electronic switch and turning-on of the first electronic switch, in which turning-off of said second electronic switch is controlled as a function of a feedback signal coming from said load, the method comprising the operations of: turning off the second electronic switch responsive to the feedback signal exceeding a threshold value; generating a memory signal indicating the duration of said first dead-time interval, wherein generating the memory signal includes charging a capacitive component during said first dead-time interval; and controlling turning-on of said first electronic switch with a delay, with respect to turning-off of said second electronic switch, identified by said memory signal, so that said second dead-time interval has a duration substantially equal to the duration of said first dead-time interval, and wherein said second dead-time interval has a duration determined by discharging the same capacitive component.