公开(公告)号：US20250088090A1

公开(公告)日：2025-03-13

申请号：US18829765

申请日：2024-09-10

Applicant: STMicroelectronics International N.V.

Inventor： Alessandro BERTOLINI ,  Germano NICOLLINI ,  Alessandro GASPARINI ,  Alberto BRUNERO ,  Alberto CATTANI

IPC: H02M1/088 ,  H02M3/158

Abstract: A time-based DC-DC converter is controlled in response to a first oscillator signal based on a first control signal, a second oscillator signal based on a second control signal and a controlled current based on a feedback control signal. The first control signal and the second control signal are a function of the controlled current. The feedback control signal is generated as a function of the first and second oscillator signals by: generating at least two binary signals including a first binary signal based on a difference between the first oscillator signal and the reference signal and a second binary signal based on a difference between the second oscillator signal and the reference signal; and generating via a charge pump the feedback control signal based on the first binary signal and the second binary signal.

公开(公告)号：US20240396442A1

公开(公告)日：2024-11-28

申请号：US18201931

申请日：2023-05-25

Applicant: STMicroelectronics International N.V.

Inventor： Alberto CATTANI

IPC: H02M3/07 ,  H02J7/00 ,  H02J50/12 ,  H04B5/00

Abstract: A wireless charging and data transmission system that includes first and second half-bridges coupled in parallel between supply and ground nodes. Each half-bridge includes high-side and low-side transistors. A first high-side driving circuit drives the control terminal of the high-side transistor of the first half-bridge with a first bootstrap voltage at a first node, and a second high-side driving circuit drives the control terminal of the high-side transistor of the second half-bridge with a second bootstrap voltage at a second node. A charge pump circuit generates and maintains a master bootstrap voltage at a master node, which is equal to the voltage at the supply node plus a given voltage. A switch circuit couples the master node to the first node during the low-side conduction period of the first half-bridge and couples the master node to the second node during the low-side conduction period of the second half-bridge.