Patent ID: 8847564

Claim:
A DC/DC voltage converter comprising: an inductor and a low-side switch connected in series between a supply voltage and a circuit ground, the inductor being coupled between the supply voltage and a node located between the inductor and the low-side switch, and the low-side switch being coupled between the node and the circuit ground; an energy transfer switch connected between the node and an output terminal of the converter, the energy transfer switch including a synchronous rectifier MOSFET; a freewheeling MOSFET connected in parallel with the inductor, the freewheeling MOSFET including an N-channel MOSFET, a body of the N-channel MOSFET being connected to the circuit ground and not being shorted to either a source or a drain of the N-channel MOSFET; a break-before-make buffer connected to a gate of the freewheeling MOSFET, a gate of the synchronous rectifier MOSFET, and a gate of the low-side switch; a first adaptive clamping circuit connected in parallel with the synchronous rectifier MOSFET; and a pulse-width modulation controller connected to an input terminal of the break-before-make buffer.