Reverse Recovery Charge Elimination in DC/DC Power Converters

A switching mode power converter circuit, comprising:

• a first high-side transistor switch and a first low-side transistor switch coupled in series between an input voltage level and a reference voltage level;
• a second high-side transistor switch and a second low-side transistor switch coupled in series between the input voltage level and the reference voltage level;
• and
• a control circuit for controlling switching operation of the first and second high-side transistor switches and the first and second low-side transistor switches,
• wherein the first high-side transistor switch has a larger on-state resistance than the second high-side transistor switch and the first low-side transistor switch has a larger on-state resistance than the second low-side transistor switch;
• and
• wherein the control circuit is configured to, during an on-state of the first and second low-side transistor switches, control the second low-side transistor switch to switch to an off-state and control the first high-side transistor switch to switch to an on-state, so that the first high-side transistor switch and the first low-side transistor switch are both in the on-state.