公开(公告)号：US20190252974A1

公开(公告)日：2019-08-15

申请号：US15895893

申请日：2018-02-13

Applicant: Lion Semiconductor Inc.

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

IPC: H02M3/07

Abstract: Circuits for a voltage regulator are provided, comprising: an inductor having a first side coupled to an input voltage; a first flying capacitor; a second flying capacitor; and a plurality of switches, wherein: in a first state, the plurality of switches couple: a second side of the inductor to a second side of the first flying capacitor and an output node; a first side of the first flying capacitor to a first side of the second flying capacitor; and a second side of the second flying capacitor to a voltage supply, in a second state, the plurality of switches couple: the second side of the inductor to the first side of the second flying capacitor; the second side of the second flying capacitor to the output node and the first side of the first flying capacitor; and the second side of the first flying capacitor to the voltage supply.

公开(公告)号：US20180123453A1

公开(公告)日：2018-05-03

申请号：US15801241

申请日：2017-11-01

Applicant: Lion Semiconductor Inc.

Inventor： Alberto Alessandro Angelo Puggelli ,  Thomas Li ,  Hans Meyvaert ,  Bertram J. Rodgers ,  Zhipeng Li ,  Wonyoung Kim

IPC: H02M3/07 ,  H02M1/08 ,  H02M3/155 ,  H02J7/00 ,  G05F3/02

CPC classification number: H02M3/07 ,  G05F3/02 ,  H02J7/0052 ,  H02J7/007 ,  H02J2007/0059 ,  H02M1/08 ,  H02M3/155 ,  H02M2001/0045

Abstract: A voltage regulator system, comprising: a switched capacitor (SC) regulator that operates at a switching frequency and receives an input voltage; and a controller configured to control an operation of the SC regulator by adjusting the switching frequency of the SC regulator based on efficiency. In some embodiments, the switching frequency is swept to determine a best efficiency. In some embodiments, the switching frequency is swept at each of a plurality of values for the input voltage. In some embodiments, the system includes further one or more switches in series with the SC regulator. In some embodiments, the SC regulator includes an output terminal that is coupled to a battery.

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：US10833579B1

公开(公告)日：2020-11-10

申请号：US15801054

申请日：2017-11-01

Applicant: Lion Semiconductor Inc.

Inventor： Alberto Alessandro Angelo Puggelli ,  Zhipeng Li ,  Thomas Li

IPC: H02M3/07 ,  G06F1/28 ,  H02J7/00 ,  H03K19/0948 ,  G11C5/14

Abstract: A switching capacitor regulator, comprising: a switching capacitor configured to switch between a first state and a second state, wherein, in the first state, a first node of the switching capacitor is coupled to a second terminal, and a second node of the switching capacitor is coupled to a fixed voltage level, and wherein, in the second state, the first node is coupled to a first terminal, and the second node is coupled to the second terminal; a power switch configured to couple the second node to the second terminal when the switching capacitor is in the second state; and a flying inverter configured to control the power switch, wherein the flying inverter has a positive power terminal and a negative power terminal, wherein the positive power terminal is coupled to the first node, and wherein the negative power terminal is coupled to the second node.

公开(公告)号：US10601311B2

公开(公告)日：2020-03-24

申请号：US15895893

申请日：2018-02-13

Applicant: Lion Semiconductor Inc.

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

IPC: H02M3/07 ,  G11C5/14

Abstract: Circuits for a voltage regulator are provided, comprising: an inductor having a first side coupled to an input voltage; a first flying capacitor; a second flying capacitor; and a plurality of switches, wherein: in a first state, the plurality of switches couple: a second side of the inductor to a second side of the first flying capacitor and an output node; a first side of the first flying capacitor to a first side of the second flying capacitor; and a second side of the second flying capacitor to a voltage supply, in a second state, the plurality of switches couple: the second side of the inductor to the first side of the second flying capacitor; the second side of the second flying capacitor to the output node and the first side of the first flying capacitor; and the second side of the first flying capacitor to the voltage supply.

公开(公告)号：US20180090946A1

公开(公告)日：2018-03-29

申请号：US15714889

申请日：2017-09-25

Applicant: Lion Semiconductor Inc.

Inventor： Aaron Melgar ,  Alberto Alessandro Angelo Puggelli ,  Thomas Li ,  Zhipeng Li ,  Hans Meyvaert ,  John Crossley ,  Wonyoung Kim

IPC: H02J7/00

CPC classification number: H02J7/007 ,  H02J7/0052 ,  H02J7/0055 ,  H02J7/0073 ,  H02J2007/0059 ,  H02J2007/0062

Abstract: Voltage regulator systems include, in part, a regulator comprising an input terminal and an output terminal, wherein the regulator is configured to receive an input voltage from an adapter at the input terminal and provide an output voltage at the output terminal, wherein the regulator comprises at least one switched capacitor regulator operating in a first conversion mode corresponding to a first conversion factor. The voltage regulator systems also include a controller configured to control an operation of the regulator, wherein the controller is configured to determine when a conversion ratio of the regulator is greater than the first conversion factor, and, in response, to send a request to the adapter to decrease the input voltage.

公开(公告)号：US10720832B2

公开(公告)日：2020-07-21

申请号：US16264079

申请日：2019-01-31

Applicant: Lion Semiconductor Inc.

Inventor： Hans Meyvaert ,  Thomas Li ,  Fred Chen ,  John Crossley ,  Zhipeng Li ,  Bertram J. Rodgers

IPC: H02M3/07 ,  H02M7/483 ,  H02M1/00 ,  H02M3/158

Abstract: Circuits comprising: a capacitor; switches that, when State0, couple the capacitor in parallel with the load and, when State1, couple the capacitor in series with the load, wherein a first of the switches connects the capacitor to ground when in State0 and wherein a second of the switches connects the capacitor to an input voltage when in State1; a third switch, wherein a first side of the third switch is connected to the capacitor identically to one of the first switch and the second switch (OFWSW), wherein the third switch switches identically to the OFWSW, wherein the third switch is smaller than the OFWSW; a first resistor connected to the second side of the third switch; and a hardware processor that measures a current flowing through the first resistor and estimates the current provided to the load based on the current measured as flowing through the first resistor.

公开(公告)号：US20200144908A1

公开(公告)日：2020-05-07

申请号：US16264079

申请日：2019-01-31

Applicant: Lion Semiconductor Inc.

Inventor： Hans Meyvaert ,  Thomas Li ,  Fred Chen ,  John Crossley ,  Zhipeng Li ,  Bertram J. Rodgers

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

Abstract: Circuits comprising: a capacitor; switches that, when State0, couple the capacitor in parallel with the load and, when State1, couple the capacitor in series with the load, wherein a first of the switches connects the capacitor to ground when in State0 and wherein a second of the switches connects the capacitor to an input voltage when in State1; a third switch, wherein a first side of the third switch is connected to the capacitor identically to one of the first switch and the second switch (OFWSW), wherein the third switch switches identically to the OFWSW, wherein the third switch is smaller than the OFWSW; a first resistor connected to the second side of the third switch; and a hardware processor that measures a current flowing through the first resistor and estimates the current provided to the load based on the current measured as flowing through the first resistor.