SWITCHED REFERENCE MOSFET DRIVE ASSIST CIRCUIT

摘要

A power converter includes at least a first phase including a high-side MOSFET transistor (HSA) and a low-side (LS) MOSFET transistor (LSA) driving a first output inductor. The first phase further includes an active gate drive assist circuit including first MOSFET switch (first switch) and second MOSFET switch (second switch) positioned in series between a source of HSA and a drain of LSA. A capacitor (CS) is between the source of HSA and drain of LSA. A bootstrap capacitor (CA) having a reference terminal is connected to a node between the first switch and the second switch.

主权项

1. A power converter, comprising:
at least a first phase including a high-side (HS) MOSFET transistor (HSA) and a low-side (LS) MOSFET transistor (LSA) driving a first output inductor; wherein said first phase further comprises:
a gate drive assist circuit including first MOSFET switch (first switch) and second MOSFET switch (second switch) positioned in series between a source of said HSA and a drain of said LSA;at least one capacitor (CS) between said source of said HSA and said drain of said LSA, anda bootstrap capacitor (CA) having a reference terminal connected to a node between said first switch and said second switch.