公开(公告)号：US09748852B2

公开(公告)日：2017-08-29

申请号：US14925860

申请日：2015-10-28

Applicant: Advanced Charging Technologies, LLC

Inventor： Michael H. Freeman ,  W. J. Weaver, Jr. ,  Mitchael C. Freeman ,  Robert Dieter ,  Andrea Baschirotto ,  Piero Malcovati ,  Marco Grassi ,  Glenn Noufer ,  Randall L. Sandusky ,  Neaz Farooqi ,  Jim Devoy ,  Silvia Jaeckel ,  Madison Hayes Yarbro Freeman

IPC: H02M3/07 ,  H02M3/335 ,  G05F1/46 ,  H02M1/08 ,  H02M1/32 ,  H02M1/36 ,  H02M3/156 ,  H02M7/06 ,  H02M1/00

CPC classification number: H02M3/33546 ,  G05F1/462 ,  H02M1/08 ,  H02M1/32 ,  H02M1/36 ,  H02M3/07 ,  H02M3/073 ,  H02M3/156 ,  H02M3/33515 ,  H02M3/33553 ,  H02M7/06 ,  H02M2001/0009 ,  H02M2001/0025 ,  H02M2001/0032 ,  H02M2001/0045 ,  H02M2001/007 ,  H02M2003/072 ,  H02M2003/075 ,  H03M7/10 ,  Y02B70/16

Abstract: An electrical circuit for providing electrical power for use in powering electronic devices, such as monitors, televisions, white goods, data centers, and telecom circuit boards, is described herein. The electrical circuit includes an input terminal configured to receive an input power signal, an output terminal configured to provide an output power signal, and a plurality of voltage reduction circuit cells coupled between the input terminal and the output terminal. Each of the voltage reduction circuit cells includes a pair of flyback capacitors, a switching circuit, and a hold capacitor. The switching device is configured to operate the corresponding voltage reduction circuit cell at a charging phase and at a discharging phase. The plurality of voltage reduction circuit cells are configured to deliver the output power signal having a voltage level that is less than the voltage level of the input power signal.

公开(公告)号：US20170242448A1

公开(公告)日：2017-08-24

申请号：US15136792

申请日：2016-04-22

Applicant: Broadcom Corporation

Inventor： Kian Tiong Wong

IPC: G05F1/575 ,  G05F1/46

CPC classification number: G05F1/575 ,  G05F1/468 ,  G05F1/565 ,  G05F3/26 ,  H02M3/1582 ,  H02M2001/0045 ,  H02M2001/007 ,  H03F3/21 ,  H03G3/004

Abstract: Methods, systems, and apparatuses are described for a low dropout voltage regulator that utilizes a replica feedback frequency compensation technique to provide enhanced stability to the low dropout voltage regulator such that the low dropout voltage regulator does not need to be externally compensated with a large capacitor (e.g., larger than 4 microfarads). Rather, a small capacitor (e.g., 4 microfarads or smaller) may be used.

公开(公告)号：US09735680B2

公开(公告)日：2017-08-15

申请号：US15009806

申请日：2016-01-28

Applicant: MEDIATEK INC.

Inventor： Hua-Chiang Huang

IPC: H02M3/158 ,  H02M3/156 ,  G01R19/165 ,  H02M1/00

CPC classification number: H02M3/158 ,  G01R19/16585 ,  H02M3/156 ,  H02M2001/0025 ,  H02M2001/0045 ,  H02M2001/0067 ,  H02M2003/1566

Abstract: A constant on-time pulse width control-based apparatus capable of detecting a transient event of a voltage converter includes a specific comparator, a logic circuit, and a controller. The specific comparator generates a logic control signal to the logic circuit according to two resultant signals of the controller. The logic circuit generates a pulse control signal with an on-time pulse width to charge an output capacitor according to the logic control signal. The controller generates the two resultant signals to the specific comparator by generating a voltage ramp signal and amplifying an output voltage ripple signal based on a reference voltage, and detects the transient event to dynamically adjust the on-time pulse width of the pulse control signal according to the amplified output voltage ripple signal.

公开(公告)号：US20170207705A1

公开(公告)日：2017-07-20

申请号：US15477579

申请日：2017-04-03

Applicant: Qorvo US, Inc.

Inventor： Michael R. Kay ,  Manbir Singh Nag

IPC: H02M3/158 ,  H03F3/38 ,  H02M3/07

CPC classification number: H02M3/1582 ,  H02M3/07 ,  H02M3/1584 ,  H02M2001/0003 ,  H02M2001/0045 ,  H02M2001/4291 ,  H02M2003/1586 ,  H03F3/38

Abstract: A buck-boost DC-DC converter, which includes converter control circuitry, converter switching circuitry, and a first inductive element, is disclosed. The converter control circuitry provides a buck mode timing signal and a boost mode timing signal. The converter switching circuitry provides a switching output signal. During a buck mode of the buck-boost DC-DC converter, when a buck pulse-width of the switching output signal is less than a buck pulse-width threshold, the buck pulse-width is limited based on both the buck mode timing signal and the boost mode timing signal. During a boost mode of the buck-boost DC-DC converter, when a boost pulse-width of the switching output signal is less than a boost pulse-width threshold, the boost pulse-width is limited based on both the buck mode timing signal and the boost mode timing signal. The first inductive element receives and filters the switching output signal to provide a converter output signal.

公开(公告)号：US09685963B2

公开(公告)日：2017-06-20

申请号：US14991577

申请日：2016-01-08

Applicant: Peregrine Semiconductor Corporation

Inventor： Robert Mark Englekirk

IPC: H02M3/07 ,  H03L7/089 ,  H02M1/00

CPC classification number: H03L7/0891 ,  H02M3/07 ,  H02M3/073 ,  H02M2001/0032 ,  H02M2001/0045 ,  H02M2003/071 ,  Y02B70/16

Abstract: A charge pump circuit that utilizes a sensing circuit for determining the current loading or status of the output supply generated by the charge pump circuit to determine a corresponding frequency for a variable rate clock for the charge pump circuit. When a current load is present, the clock frequency automatically ramps up to a relatively high level to increase the output current of the charge pump circuit. When the current load is removed and the supply is settled out, the clock frequency is automatically reduced to a relatively quieter level and the charge pump circuitry operates at a lower power level. Accordingly, the charge pump circuit is only noisy when it has to be, thus providing optimal power when required and being electrically quiet and operating at lower power at all other times.

公开(公告)号：US09627975B2

公开(公告)日：2017-04-18

申请号：US14082629

申请日：2013-11-18

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Michael R. Kay

IPC: G05F1/24 ,  H02M3/158 ,  H02M1/00

CPC classification number: H02M3/1582 ,  H02M2001/0045 ,  H02M2001/007

Abstract: The present disclosure provides a modulated power supply system having a switching converter with an output terminal for supplying modulated power to a load. The modulated power supply system also includes a controller adapted to transition the switching converter between a buck mode and a boost mode in response to a detection of at least one predetermined condition associated with the output terminal.

公开(公告)号：US09621036B2

公开(公告)日：2017-04-11

申请号：US14132534

申请日：2014-01-09

Applicant: Allegro Microsystems, LLC

Inventor： Joshua Wibben

IPC: H02M3/156 ,  H02M1/00

CPC classification number: H02M3/156 ,  H02M2001/0025 ,  H02M2001/0032 ,  H02M2001/0045 ,  Y02B70/16

Abstract: A switching regulator control circuit comprises a first control circuit to control conduction of the switch according to a first mode of operation and having a regulation point and a second control circuit to control conduction of the switch according to a second mode of operation in response to a reference signal that is calibrated to have a predetermined relationship with respect to the regulation point of the first control circuit. In some embodiments, the reference signal is calibrated to be a predetermined amount greater than the regulation point of the first control circuit and may be calibrated during the first mode of operation or in response to a regulator start or restart event.

公开(公告)号：US20170099011A1

公开(公告)日：2017-04-06

申请号：US15282438

申请日：2016-09-30

Applicant: Advanced Charging Technologies, LLC

Inventor： Michael H. Freeman ,  Robert Dieter ,  Randall L. Sandusky ,  Neaz Farooqi ,  Jim Devoy ,  Curtis Dickie

IPC: H02M7/06 ,  H02M1/36 ,  H02M1/12 ,  H02M1/44 ,  H02M1/08 ,  H02M1/14

CPC classification number: H02M7/06 ,  G05F1/462 ,  H02M1/08 ,  H02M1/32 ,  H02M1/36 ,  H02M1/44 ,  H02M3/07 ,  H02M3/073 ,  H02M3/156 ,  H02M3/33515 ,  H02M3/33553 ,  H02M3/33592 ,  H02M2001/0025 ,  H02M2001/0032 ,  H02M2001/0045 ,  H02M2001/007 ,  H02M2003/072 ,  Y02B70/1475 ,  Y02B70/16

Abstract: An electrical circuit for providing electrical power for use in powering electronic devices, such as monitors, televisions, white goods, data centers, and telecom circuit boards, is described herein. The electrical circuit includes a voltage reduction circuit and a rectifier circuit for delivering input power signal to the voltage reduction circuit. The voltage reduction circuit is configured to receive an input power signal and generate an output power signal at a lower voltage level. The rectifier circuit includes a full wave bridge rectifier coupled to the electrical power source, a Zener based charging circuit coupled to the full wave bridge rectifier, a voltage divider coupled to the Zener based charging circuit and the full wave bridge rectifier, and an output terminal coupled to the full wave bridge rectifier, the Zener based charging circuit, and the voltage divider for delivering the input power signal to the voltage reduction circuit.

公开(公告)号：US09614443B2

公开(公告)日：2017-04-04

申请号：US14808119

申请日：2015-07-24

Applicant: RF Micro Devices, Inc.

Inventor： Michael R. Kay ,  Manbir Singh Nag

IPC: G05F1/24 ,  H02M3/158

CPC classification number: H02M3/1582 ,  H02M3/07 ,  H02M3/1584 ,  H02M2001/0003 ,  H02M2001/0045 ,  H02M2001/4291 ,  H02M2003/1586 ,  H03F3/38

Abstract: A buck-boost DC-DC converter, which includes converter control circuitry, converter switching circuitry, and a first inductive element, is disclosed. The converter control circuitry provides a buck mode timing signal and a boost mode timing signal. The converter switching circuitry provides a switching output signal. During a buck mode of the buck-boost DC-DC converter, when a buck pulse-width of the switching output signal is less than a buck pulse-width threshold, the buck pulse-width is limited based on both the buck mode timing signal and the boost mode timing signal. During a boost mode of the buck-boost DC-DC converter, when a boost pulse-width of the switching output signal is less than a boost pulse-width threshold, the boost pulse-width is limited based on both the buck mode timing signal and the boost mode timing signal. The first inductive element receives and filters the switching output signal to provide a converter output signal.

公开(公告)号：US20170063229A1

公开(公告)日：2017-03-02

申请号：US14841915

申请日：2015-09-01

Applicant: Silicon Laboratories Inc.

Inventor： Matthew R. Powell

IPC: H02M3/158

CPC classification number: G06F1/26 ,  G05F1/59 ,  H02M1/36 ,  H02M3/00 ,  H02M2001/0045

Abstract: An integrated circuit includes: a voltage converter to receive a first supply voltage signal via a first power path and to output a first output voltage signal; and a voltage regulator to receive the first output voltage signal and to output a regulated voltage signal. The voltage regulator may further be configured to receive the first supply voltage signal via a second power path, and to selectively output the regulated voltage signal from one of the first supply voltage signal and the first output voltage signal.

Abstract translation: 集成电路包括：电压转换器，用于经由第一电源路径接收第一电源电压信号并输出​​第一输出电压信号; 以及电压调节器，用于接收第一输出电压信号并输出​​调节电压信号。 电压调节器还可以被配置为经由第二电源路径接收第一电源电压信号，并且从第一电源电压信号和第一输出电压信号之一选择性地输出调节电压信号。