公开(公告)号：US20250112556A1

公开(公告)日：2025-04-03

申请号：US18904313

申请日：2024-10-02

Applicant: STMicroelectronics International N.V.

Inventor： Alessandro BERTOLINI ,  Alessandro GASPARINI

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/14

Abstract: A non-inverting buck boost DC-DC converter operates with a ripple-hysteretic-current-mode-control including: a first state where control signals close a first high side switch and a second low side switch; a second state where control signals close the first high side switch and a second high side switch; a third state where control signals close a first low side switch and the second high side switch; and a fourth state where control signals close the first low side switch and the second low side switch. Control signal peak voltage and valley voltage are detected. Passing between the first, second, third and fourth states is dependent on peak voltage detection, valley voltage detection, expiration of a variable first time interval following entering the second state, and expiration of a fixed second time interval following entering the third state.

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.