公开(公告)号：US20240348169A1

公开(公告)日：2024-10-17

申请号：US18300735

申请日：2023-04-14

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Pavel Studnicka ,  Petr Spanel ,  Ondrej Kotaba ,  Jiri Holy

IPC: H02M3/335 ,  H02M1/00 ,  H03K17/691

CPC classification number: H02M3/33523 ,  H02M1/0006 ,  H03K17/691 ,  H03K2217/0063 ,  H03K2217/0072

Abstract: A DC-DC converter circuit includes a high-side transistor, a low side transistor, a gate driver power supply, a converter control, and a capacitance divider network. The high-side transistor includes a high-side drain terminal, a high-side source terminal, and a high-side gate terminal. The high-side drain terminal is coupled to a positive DC supply terminal. The gate driver power supply is electrically isolated from the high-side transistor and the low-side transistor. The converter control is configured to supply high-side control commands and low-side control commands to the high-side transistor and the low-side transistor, respectively. The capacitance divider network includes a first capacitor and a second capacitor. The first capacitor is electrically connected in series, at a DC-link midpoint node, to the second capacitor. The DC-link midpoint node, the gate driver power supply, and the converter control are all electrically connected to, and share, a local electrical ground.