公开(公告)号：US10381918B1

公开(公告)日：2019-08-13

申请号：US16053438

申请日：2018-08-02

Applicant: Microchip Technology Incorporated

Inventor： Ioan Stoichita ,  Alexander Mednik ,  Surya Talari

IPC: H02M1/15 ,  H02M3/157 ,  H02M3/158 ,  H02M3/156

CPC classification number: H02M1/15 ,  H02M3/156 ,  H02M3/157 ,  H02M3/1584 ,  H02M3/1588 ,  Y02B70/1466

Abstract: A multiple-phase parallelable constant on time (COT) buck controller, a first phase containing a first memory bit and a second phase containing a second memory bit. The COT buck controller includes a first converter comprising a first constant TON generator configured to sense and deliver a first TON request when the first memory bit is in a logic one state, and a second converter connected in parallel with the first converter, the second converter comprising a second constant TON generator configured to sense and deliver a second TON request when the second memory bit is in the logic one state, only one of the first memory bit and the second memory bit being in the logic one state thus generating activity in a daisy chain ring where each of the first converter and the second converter senses and delivers a corresponding TON request in a sequential manner.

公开(公告)号：US20190140635A1

公开(公告)日：2019-05-09

申请号：US16011362

申请日：2018-06-18

Applicant: pSemi Corporation

Inventor： Buddhika Abesingha ,  Merlin Green ,  Gary Chunshien Wu

IPC: H03K17/284 ,  H03K17/082 ,  H02M1/38

CPC classification number: H03K17/284 ,  G05F1/00 ,  H02M1/08 ,  H02M1/38 ,  H02M3/158 ,  H03K17/08122 ,  H03K17/0822 ,  Y02B70/1466

Abstract: Systems, methods, and apparatus for use in biasing and driving high voltage semiconductor devices using only low voltage transistors are described. The apparatus and method are adapted to control multiple high voltage semiconductor devices to enable high voltage power control, such as power amplifiers, power management and conversion (e.g. DC/DC) and other applications wherein a first voltage is large compared to the maximum voltage handling of the low voltage control transistors. According to an aspect, timing control of edges of a control signal to the high voltage semiconductor devices is provided by a basic edge delay circuit that includes a transistor, a current source and a capacitor. An inverter can be selectively coupled, via a switch, to an input and/or an output of the basic edge delay circuit to allow for timing control of a rising edge or a falling edge of the control signal.

公开(公告)号：US20180367039A1

公开(公告)日：2018-12-20

申请号：US16116520

申请日：2018-08-29

Applicant: KINETIC TECHNOLOGIES ,  SILICON FIDELITY, INC.

Inventor： Farshid IRAVANI ,  Kin SHUM ,  Jan NILSSON ,  William Robert PELLETIER

IPC: H02M3/158 ,  H02M3/00

CPC classification number: H02M3/158 ,  H01L2224/16225 ,  H01L2224/48091 ,  H02M3/00 ,  H02M3/1588 ,  Y02B70/1466 ,  H01L2924/00014

Abstract: A switching regulator may comprise an inductor housed in an inductor housing, a wire electrically coupled to the inductor and housed in the inductor housing, an electrical component including a terminal, and a board including a board trace. The board trace may electrically couple the terminal with first wire. The electrical component and the inductor housing may be attached to the board. The attachment of the inductor housing to the board may create a space between the inductor housing and the board. The electrical component may be disposed within the space.

公开(公告)号：US20180309365A1

公开(公告)日：2018-10-25

申请号：US15767418

申请日：2016-10-24

Applicant: AutoNetworks Technologies, Ltd. ,  Sumitomo Wiring Systems, Ltd. ,  SUMITOMO ELECTRIC INDUSTRIES, LTD.

Inventor： Makoto Higashi ,  Takenori Abe

IPC: H02M3/157 ,  H02M3/158 ,  H02M1/088

CPC classification number: H02M3/157 ,  H02M1/088 ,  H02M1/38 ,  H02M3/1588 ,  H03K7/08 ,  Y02B70/1466

Abstract: A signal generation circuit, a voltage conversion device, and a computer program are provided wherein the minimum increment of a value to be set for a generating portion, can be made substantially smaller than an actual increment with a relatively small processing load. A CPU specifies a set value Y (closest to a target value X) and a second closest set value Z in every N periods of a first signal, determines N set values for the first signal by combining Y and Z based on the result of comparison between the values of Y and Z and the value of X, sets one set value for a generating portion for each period of the first signal, calculates a value for setting off-time of the second signal in a first period in N periods as an additional value, and sets the calculated value for the generating portion.

公开(公告)号：US20180287493A1

公开(公告)日：2018-10-04

申请号：US15471739

申请日：2017-03-28

Applicant: STMicroelectronics S.r.l.

Inventor： Alberto Riva ,  Giorgio Oddone

IPC: H02M3/158 ,  H02M1/08

CPC classification number: H02M1/08 ,  H02M3/156 ,  H02M3/1588 ,  H02M7/003 ,  H02M2001/0054 ,  Y02B70/1466 ,  Y02B70/1491

Abstract: A converter configured to convert a DC input voltage to a DC output voltage, may include: a high-side driver circuit having a first terminal coupled to a first die pad; a high-side transistor having a drain terminal coupled to a second die pad and a source terminal coupled to a third die pad; and a low-side transistor having a source terminal coupled to a fourth die pad and a drain terminal coupled to a fifth die pad. The converter may further include a resistive element coupled between the source terminal of the high-side transistor and the drain terminal of the low-side transistor, where a second terminal of the high-side driver circuit is coupled to a sixth die pad.

公开(公告)号：US20180269651A1

公开(公告)日：2018-09-20

申请号：US15918154

申请日：2018-03-12

Applicant: Yuuki OKA ,  Tsuyoshi UENO ,  Seiya ABE

Inventor： Yuuki OKA ,  Tsuyoshi UENO ,  Seiya ABE

IPC: H01S5/042

CPC classification number: H01S5/042 ,  H02M1/32 ,  H02M1/36 ,  H02M3/1588 ,  H05B33/0815 ,  Y02B70/1466

Abstract: A drive circuit is configured to supply a current to a light emitting element. The drive circuit includes a plurality of switching elements configured to switch between ON/OFF states with a modulation signal, a capacitor connected in parallel with the light emitting element, and a control module configured to control the switching elements so that a voltage of the capacitor does not become lower than a threshold.

公开(公告)号：US10075076B1

公开(公告)日：2018-09-11

申请号：US15838527

申请日：2017-12-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Preetam Tadeparthy ,  Brian Carpenter ,  Nitin Agarwal

IPC: H03K17/16 ,  H02M3/158 ,  H02M3/337 ,  H02M1/00 ,  H02M1/42

CPC classification number: H02M3/1582 ,  H02M1/08 ,  H02M1/38 ,  H02M3/1588 ,  H02M3/3378 ,  H02M2001/0029 ,  H02M2001/0058 ,  H02M2001/4291 ,  Y02B70/1466

Abstract: A voltage converter circuit includes a high side transistor, a high side driver coupled to a control input of the high side transistor, a low side transistor coupled to the high side transistor at a switch node, and a current steering circuit coupled to the control input of the high side and to the switch node. During transition of the high side transistor to an on state, a current from the high side driver initially divides between the control input of the high side transistor and the current steering circuit, and as a voltage on the switch node increases, less of the current from the high side driver flows through the current steering circuit and more of the current from the high side driver flows to the control input of the high side transistor.

公开(公告)号：US10063146B1

公开(公告)日：2018-08-28

申请号：US15476790

申请日：2017-03-31

Applicant: Alpha and Omega Semiconductor (Cayman) Ltd.

Inventor： Gilbert S. Z. Lee

IPC: G01R1/20 ,  H02M3/158 ,  H02M1/08 ,  G01R15/18 ,  G01R19/00 ,  H02M1/00

CPC classification number: G01R19/003 ,  G01R15/18 ,  G01R19/16552 ,  G01R31/40 ,  H02M3/1588 ,  H02M2001/0009 ,  Y02B70/1466

Abstract: Aspects of the present disclosure describe a SMPS system, comprising a SMPS and an inductor current sensing device. The SMPS comprise a high-side (HS) switch and a low-side (LS) switch coupled in series and an output filter including an inductor and a capacitor coupled to a switch node formed by the HS and LS switches. An inductor current is supplied by the inductor to a load. The inductor current sensing device coupled across the LS switch has a first input configured to receive a node signal indicating a voltage level at the switch node, a second input configured to receive an input voltage of the system and a third input configured to receive an output voltage of the system. The inductor current sensing device is configured to obtain a first constant DC slope information, a second constant DC slope information and a valley current information based on the first input, second and third inputs, and generate an output signal based on the first constant DC slope information, the second constant DC slope information and the valley current information. The output signal has a triangular waveform including a rising slope and a falling slope proportional to rising and falling slopes of the inductor current.

公开(公告)号：US20180234014A1

公开(公告)日：2018-08-16

申请号：US15432150

申请日：2017-02-14

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Sarang VADNERKAR ,  Ullas PAZHAYAVEETIL ,  Eric J. KING

IPC: H02M3/157 ,  H02M1/08

CPC classification number: H02M3/157 ,  H02M1/08 ,  H02M3/1588 ,  H02M2001/0009 ,  H02M2001/0058 ,  Y02B70/1466

Abstract: A method may include operating a DC-DC switch converter in a forced continuous conduction mode in which for each switching cycle of the switch converter during the forced continuous conduction mode, the switch converter operates in a series of phases including: a first phase in which an inductor current flowing in an inductor of the switch converter increases from zero to a controlled positive current magnitude with respect to a first terminal and a second terminal of the inductor; a second phase in which the inductor current decreases from the controlled positive current magnitude to approximately zero; a third phase in which the inductor current decreases from approximately zero to a controlled negative current magnitude with respect to a first terminal and a second terminal of the inductor; and a fourth phase in which the inductor current increases from the controlled negative current magnitude to approximately zero.

公开(公告)号：US20180191249A1

公开(公告)日：2018-07-05

申请号：US15397441

申请日：2017-01-03

Applicant: National Taipei University of Technology

Inventor： Ting-Wen Su ,  Yuh-Shyan Hwang

IPC: H02M3/158 ,  H02M1/08

CPC classification number: H02M3/1588 ,  H02M1/08 ,  H02M2001/0025 ,  H02M2001/0048 ,  H02M2001/0054 ,  H02M2001/0058 ,  Y02B70/1466 ,  Y02B70/1491

Abstract: A switching regulator includes a first switch; a second switch coupled between the first switch and ground; an inductor coupled to a common node between the first and second switches; a capacitor coupled between the inductor and ground; a controller receiving a disable signal, and generating first and second control signals respectively for the first and second switches; and a crossing detector comparing an auxiliary voltage at the common node with a negative reference voltage to generate a comparison signal, and generating the disable signal based on the first control signal and the comparison signal. The second control signal switches into an inactive state upon the disable signal indicating a reference-crossing of the auxiliary voltage.