公开(公告)号：US20240146194A1

公开(公告)日：2024-05-02

申请号：US18548401

申请日：2022-03-24

Applicant: Lion Semiconductor Inc.

Inventor： Hans MEYVAERT

IPC: H02M3/158 ,  G05F1/613 ,  H02J1/08

CPC classification number: H02M3/158 ,  G05F1/613 ,  H02J1/082 ,  H02M1/009

Abstract: This application relates to methods and apparatus for DC voltage conversion. A DC converter (100) is described, with a charge pump circuit comprising a plurality of charge pump stages (1401, 1402-2, 1402-2) each charge pump stage comprising connections for respective first and second capacitors for that stage (C1A, C1B; C2A, C2B; C3A, C3B). The charge pump also has a switch network, wherein the switch network comprises, between each successive stage, four switching paths (S7AA, S7AB, S7Ba, S7BB; S6AA, S6AB, S6Ba, S6BB) for separately connecting a respective first electrode of each of the first and second capacitors of one stage to a first electrode either of the first and second capacitors of the preceding stage, so that the relevant capacitor of the one stage can be charged by the relevant capacitor of the preceding stage.

公开(公告)号：US20210305895A1

公开(公告)日：2021-09-30

申请号：US17213268

申请日：2021-03-26

Applicant: Lion Semiconductor Inc.

Inventor： Hans Meyvaert

IPC: H02M3/07 ,  H02M3/00

Abstract: A circuit comprising: a first switch having: first side (FS) connected to first capacitor's second side (1C2S); and second side (SS) connected to reference node (RN); a second switch having: FS connected to second voltage node (2VN); and SS connected to 1C2S; a third switch having: FS connected to the first capacitor's first side (1C1S); and SS connected to 2VN; a fourth switch having: FS connected to a third voltage node (3VN); and SS connected to 1C1S; a fifth switch having: FS connected to second capacitor's second side (2C2S); and SS connected to RN; a sixth switch having: FS connected to 3VN; and SS connected to 2C2S; a seventh switch having: FS connected to the second capacitor's first side (2C1S); and SS connected to 3VN; and an eighth switch having: FS connected to first voltage node; and SS connected to 2C1S.

公开(公告)号：US10719099B2

公开(公告)日：2020-07-21

申请号：US16410917

申请日：2019-05-13

Applicant: Lion Semiconductor Inc.

Inventor： Alberto Alessandro Angelo Puggelli ,  Thomas Li ,  Wonyoung Kim ,  John Crossley ,  Hanh-Phuc Le

IPC: G05F5/00 ,  H02M3/07 ,  H02M3/158 ,  H02J7/00 ,  H02M1/00

Abstract: The present disclosure shows a reconfigurable Dickson Star SC regulator that can support multiple conversion ratios by reconfiguring between various modes. The reconfigurable Dickson Star SC regulator is designed to reduce the number of redundant capacitors by reusing capacitors and switches across multiple modes of operation (across multiple conversion ratios). The present disclosure also shows a hybrid (e.g., two-stage) voltage regulator.

公开(公告)号：US10715035B2

公开(公告)日：2020-07-14

申请号：US15903974

申请日：2018-02-23

Applicant: Lion Semiconductor Inc.

Inventor： Thomas Li ,  Zhipeng Li ,  Alberto Puggelli ,  Hans Meyvaert

IPC: H02M3/07 ,  G05F3/16 ,  H02M1/00

Abstract: Circuits comprising: a first capacitor(C1); a first switch(S1) having a first side coupled to a VIN and a second side coupled to a first side of C1; a second switch(S2) having a first side coupled to the second side of S1; a third switch(S3) having a first side coupled to a second side of S2 and a second side coupled to a second side of C1; a fourth switch(S4) having a first side coupled to a second side of S3 and a second side coupled to a VSUPPLY, wherein: in a first state, S1 and S3 are off, and S2 and S4 are on; in a second state, S1 and S3 are on, and S2 and S4 are off; and at least one of a control of S1, a control of S2, a control of S3, and a control of S4 is coupled to a time-varying-slew-rate signal.

公开(公告)号：US20190265743A1

公开(公告)日：2019-08-29

申请号：US15903974

申请日：2018-02-23

Applicant: Lion Semiconductor Inc.

Inventor： Thomas Li ,  Zhipeng Li ,  Alberto Puggelli ,  Hans Meyvaert

IPC: G05F3/16 ,  H02M3/07

Abstract: Circuits comprising: a first capacitor(C1); a first switch(S1) having a first side coupled to a VIN and a second side coupled to a first side of C1; a second switch(S2) having a first side coupled to the second side of S1; a third switch(S3) having a first side coupled to a second side of S2 and a second side coupled to a second side of C1; a fourth switch(S4) having a first side coupled to a second side of S3 and a second side coupled to a VSUPPLY, wherein: in a first state, S1 and S3 are off, and S2 and S4 are on; in a second state, S1 and S3 are on, and S2 and S4 are off; and at least one of a control of S1, a control of S2, a control of S3, and a control of S4 is coupled to a time-varying-slew-rate signal.

公开(公告)号：US20190214905A1

公开(公告)日：2019-07-11

申请号：US15868496

申请日：2018-01-11

Applicant: Lion Semiconductor Inc.

Inventor： Alberto Puggelli ,  Minbok Lee ,  Hans Meyvaert ,  Zhipeng Li

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M1/32

Abstract: An inductor; a first switch having a first side connected to a first voltage source (VS1); a second switch having a first side connected to a second side of the first switch (2SS1), and a second side connected to a first side of the inductor (1SI); a third switch having a first side connected to the 1SI; a fourth switch having a first side connected to a second side of the third switch (2SS3), and a second side connected to a second voltage source (VS2); a fifth switch having a first side connected to the 1SI, and a second side connected to the VS1 and/or the VS2; a first capacitor having a first side connected to the 2SS1, and a second side connected to the 2SS3; and a second capacitor having a first side connected to a second side of the inductor, and a second side connected to the VS2.

公开(公告)号：US10320295B2

公开(公告)日：2019-06-11

申请号：US15898499

申请日：2018-02-17

Applicant: Lion Semiconductor Inc.

Inventor： John Crossley ,  Hanh-Phuc Le ,  Alberto Alessandro Angelo Puggelli

IPC: G05F1/445 ,  H02M3/158 ,  H02M1/14 ,  H02M3/07 ,  H02M1/00 ,  H02M1/42

Abstract: The present disclosure provides an asymmetric switching capacitor regulator that is capable of providing an output voltage, covering a wide voltage range, with a high efficiency. The disclosed switching capacitor regulator is configured to generate a wide range of an output voltage by differentiating a voltage across one or more switching capacitors from a voltage across the rest of the switching capacitors in the switching capacitor regulator.

公开(公告)号：US10274987B2

公开(公告)日：2019-04-30

申请号：US15487659

申请日：2017-04-14

Applicant: Lion Semiconductor Inc.

Inventor： Alberto Alessandro Angelo Puggelli ,  Thomas Li ,  Wonyoung Kim ,  John Crossley ,  Hanh-Phuc Le

IPC: G05F5/00 ,  H02J7/00 ,  H02M3/07 ,  H02M3/158 ,  H02M1/00

Abstract: The present disclosure shows a reconfigurable Dickson Star SC regulator that can support multiple conversion ratios by reconfiguring between various modes. The reconfigurable Dickson Star SC regulator is designed to reduce the number of redundant capacitors by reusing capacitors and switches across multiple modes of operation (across multiple conversion ratios). The present disclosure also shows a hybrid (e.g., two-stage) voltage regulator.

公开(公告)号：US20180358896A1

公开(公告)日：2018-12-13

申请号：US15695955

申请日：2017-09-05

Applicant: Lion Semiconductor Inc.

Inventor： Alberto Alessandro Angelo Puggelli ,  Thomas Li ,  Wonyoung Kim ,  John Crossley ,  Hanh-Phuc Le

IPC: H02M3/07 ,  H02M3/157 ,  H02M3/335 ,  H02M3/158 ,  H02M5/32

CPC classification number: H02M3/07 ,  H02M3/157 ,  H02M3/158 ,  H02M3/1588 ,  H02M3/335 ,  H02M5/32 ,  H02M2001/0045 ,  H02M2001/007

Abstract: Circuits comprising: an inductor having a first side connected to VIN; a first switch having a first side connected to a second side of the inductor; a second switch having a first side connected to VIN; a first capacitor having a first side connected to a second side of the second switch; a third switch having a first side connected to a second side of the first switch; a fourth switch having a first side connected to a second side of the third switch; a fifth switch having a first side connected to a second side of the first capacitor and to a second side of the fourth switch, and having a second side coupled to a voltage source; and a second capacitor having a first side connected to the first side of the fourth switch, and having a second side connected to the second side of the fifth switch.

公开(公告)号：US10063139B2

公开(公告)日：2018-08-28

申请号：US14250990

申请日：2014-04-11

Applicant: Lion Semiconductor Inc.

Inventor： Hanh-Phuc Le ,  John Crossley ,  Wonyoung Kim

IPC: H02J7/04 ,  H02J7/16 ,  H02M3/04 ,  H02J7/00 ,  H02M3/156 ,  H02M3/07 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M3/04 ,  H01L2224/16225 ,  H01L2924/12044 ,  H01L2924/13091 ,  H01L2924/15311 ,  H01L2924/19042 ,  H01L2924/19105 ,  H02J7/0052 ,  H02J2007/0062 ,  H02M3/07 ,  H02M3/156 ,  H02M3/158 ,  H02M2001/007 ,  H02M2001/0093 ,  H02M2003/072 ,  H01L2924/00

Abstract: The present disclosure shows a hybrid regulator topology that can be more easily integrated and that can maintain high efficiency across a wide output and input voltage range, even with a small inductor. The hybrid regulator topology can include two types of regulators: a flying switched-inductor regulator and a step-down regulator that divides the input voltage into an M/N fraction of the input voltage. The disclosed embodiments of the hybrid regulator topology can reduce the capacitive loss of the flying switched-inductor regulator by limiting the voltage swing across the switches in the flying switched-inductor regulator. The disclosed embodiments of the hybrid regulator topology can reduce the inductor resistive loss of the flying switched-inductor regulator by operating the flying switched-inductor regulator at a high switching frequency and with a small amount of current flow through the inductor.