Half-bridge electronic device comprising two systems for minimizing dead-time between the switching operations of a high level switch and of a low level switch

A method for synchronizing an alternating activation of a low level switch and a high level switch in a half-bridge electronic device, comprising the following steps:

• a) deactivating the low level switch when a first control signal changes to state 0, wherein the first control signal is formed from an input signal and is of the same polarity as said input signal and offset by a dead time;
• b) interpreting a variation following a rising edge of a voltage at a midpoint, to generate a second synchronization signal capable of activating the high level switch, wherein the second synchronization signal is activated at a state 1 by the rising edge and reset to state 0 when a second control signal changes to state 1;
• c) activating the high level switch, by a second activation/deactivation signal resulting from combining the second synchronization signal with the second control signal in an OR logic gate;
• d) deactivating the high level switch when the second control signal changes to state 0, wherein the second control signal is formed from the input signal and is of reversed polarity with respect to said input signal and offset by a dead time;
• e) interpreting a variation following a falling edge of the voltage at the midpoint to generate a first synchronization signal capable of activating the low level switch, wherein the first synchronization signal is activated at a state 1 by the falling edge and reset to state 0 when the first control signal changes to state 1;
• and
• f) activating the low level switch, by a first activation/deactivation signal resulting from combining the first synchronization signal with the first control signal in another OR logic gate.