Method to switch MOSFETs using recycled, parasitic energy

摘要

An energy efficient gate drive technique for binary push-pull MOSFET switching systems having a common switch node with inductive and capacitive elements connected to this common switch node. These energy storage elements on the common switch node can be parasitic in nature or discrete components. This technique recycles otherwise lost PMOS gate drive energy through the switch node, as a storage element, to the NMOS output FET.