公开(公告)号：US20240322814A1

公开(公告)日：2024-09-26

申请号：US18604239

申请日：2024-03-13

Applicant: STMicroelectronics International N.V.

Inventor： Francesco PULVIRENTI ,  Salvatore Giuseppe PRIVITERA ,  Cesare BIMBI

IPC: H03K17/16 ,  H03K17/10 ,  H03K17/687

CPC classification number: H03K17/162 ,  H03K17/102 ,  H03K17/6872

Abstract: A buffer circuit for driving a GaN power switch includes an input node to receive an input signal and an output node to produce a gate signal for the GaN power switch. The buffer includes a push-pull stage that includes a first transistor coupled between a supply voltage node and the output node, a second transistor coupled between the supply voltage node and the output node, a third transistor coupled between the output node and a reference voltage node, and a fourth transistor coupled between the output node and the reference voltage node. The buffer includes a pre-buffer stage configured to receive the input signal and to produce respective driving signals for the first, second, third and fourth transistors to produce the gate signal at the output node in four consecutive phases.