Non-isolated DC/DC converter with 2 inductors and zero voltage switching

摘要

Zero-voltage switching of a switching element (Q2) is achieved by turning off a switching element (Q1) and then turning on switching element (Q2) while the parasitic diode (D_Q2) of switching element (Q2) is turned on. Subsequently, switching element (Q2) is turned off when the current flowing through switching element (Q2) changes from negative to positive (in a direction from the drain towards the source) and the current reaches a prescribed threshold value. Then, zero-voltage switching of switching element (Q1) is achieved by turning on switching element (Q1) while the parasitic diode (D_Q1) of switching element (Q1) is turned on.