公开(公告)号：US20230238887A1

公开(公告)日：2023-07-27

申请号：US17582836

申请日：2022-01-24

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Changjong LIM

IPC: H02M3/158 ,  H02M1/00 ,  H02M3/07

CPC classification number: H02M3/1582 ,  H02M1/0095 ,  H02M3/07

Abstract: A power converter for converting an input voltage at an input of the power converter into an output voltage at an output of the power converter may include a switching node, a power inductor coupled between the switching node and the output, a flying capacitor having a first flying capacitor terminal and a second flying capacitor terminal, a pump capacitor having a first pump capacitor terminal and a second pump capacitor terminal, the second pump capacitor terminal coupled to ground, a first switch coupled between the input and the first flying capacitor terminal, a second switch coupled between the first flying capacitor terminal and the switching node, a third switch coupled between the second flying capacitor terminal and the switching node, a fourth switch coupled between the second flying capacitor terminal and a ground voltage, a fifth switch coupled between the second flying capacitor terminal and the first pump capacitor terminal, and a sixth switch coupled between the output and the first pump capacitor terminal.

公开(公告)号：US20240204662A1

公开(公告)日：2024-06-20

申请号：US18588723

申请日：2024-02-27

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Changjong LIM

IPC: H02M3/07 ,  H02M1/00

CPC classification number: H02M3/07 ,  H02M1/0095

Abstract: A power converter for converting an input voltage at an input of the power converter into an output voltage at an output of the power converter may include a first power converter branch comprising a first capacitor, a first switch network, and a first inductor, the first switch network arranged to selectably couple the first capacitor between an input voltage, a first reference voltage, and a first terminal of the first inductor, wherein a second terminal of the first inductor is coupled to an output node; a second power converter branch comprising a second capacitor, a second switch network, and a second inductor, the second switch network arranged to selectably couple the second capacitor between the input voltage, a second reference voltage, and a first terminal of the second inductor, wherein a second terminal of the second inductor is coupled to the output node; and a third switch network between the first power converter branch and the second power converter branch, wherein the third switch network is arranged to selectably couple the first and second capacitors in series or in parallel, to allow enable charge balancing between the first capacitor and second capacitor.

公开(公告)号：US20240356441A1

公开(公告)日：2024-10-24

申请号：US18628007

申请日：2024-04-05

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Graeme G. MACKAY ,  Jin-Jyh SU ,  Hasnain AKRAM ,  Changjong LIM ,  Dave MARSHNIL

IPC: H02M3/158 ,  H02M1/08 ,  H02M3/07

CPC classification number: H02M3/158 ,  H02M1/08 ,  H02M3/07

Abstract: A multi-level power converter configured to receive a power supply and generate an inductor current may include a first switch coupled to a first capacitor, a second switch coupled to a second capacitor, a third switch coupled to a third capacitor, a fourth switch, an inductor coupled to a switch node between the second switch and the third switch, and a flying capacitor having a first terminal coupled to a first node between the first and second switch and a second terminal coupled to a second node between the third and fourth switch, wherein the second capacitor is configured to share charge with at least one of the first capacitor and the third capacitor to enable non-gate terminals of at least one of the first switch, the second switch, and the third switch to replenish with charge at or approximate to a duty cycle extreme of the multi-level power converter.

公开(公告)号：US20240079956A1

公开(公告)日：2024-03-07

申请号：US18505849

申请日：2023-11-09

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Changjong LIM

IPC: H02M3/07 ,  H02M1/00

CPC classification number: H02M3/07 ,  H02M1/0095

Abstract: A power converter for converting an input voltage at an input of the power converter into an output voltage at an output of the power converter may include a switching node, a power inductor coupled between the switching node and the output, a flying capacitor having a first flying capacitor terminal and a second flying capacitor terminal, a pump capacitor having a first pump capacitor terminal and a second pump capacitor terminal, the second pump capacitor terminal coupled to ground, a first switch coupled between the input and the first flying capacitor terminal, a second switch coupled between the first flying capacitor terminal and the switching node, a third switch coupled between the second flying capacitor terminal and the switching node, a fourth switch coupled between the second flying capacitor terminal and a ground voltage, a fifth switch coupled between the second flying capacitor terminal and the first pump capacitor terminal, and a sixth switch coupled between the output and the first pump capacitor terminal.

公开(公告)号：US20230318447A1

公开(公告)日：2023-10-05

申请号：US17707092

申请日：2022-03-29

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Changjong LIM

IPC: H02M3/07 ,  H02M1/00

CPC classification number: H02M3/07 ,  H02M1/0095

Abstract: A power converter for converting an input voltage at an input of the power converter into an output voltage at an output of the power converter may include a first power converter branch comprising a first capacitor, a first switch network, and a first inductor, the first switch network arranged to selectably couple the first capacitor between an input voltage, a first reference voltage, and a first terminal of the first inductor, wherein a second terminal of the first inductor is coupled to an output node; a second power converter branch comprising a second capacitor, a second switch network, and a second inductor, the second switch network arranged to selectably couple the second capacitor between the input voltage, a second reference voltage, and a first terminal of the second inductor, wherein a second terminal of the second inductor is coupled to the output node; and a third switch network between the first power converter branch and the second power converter branch, wherein the third switch network is arranged to selectably couple the first and second capacitors in series or in parallel, to allow enable charge balancing between the first capacitor and second capacitor.