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21. 发明公开

US20240053781A1 LOW-DROPOUT REGULATOR WITH INRUSH CURRENT LIMITING CAPABILITIES 审中-公开
公开(公告)号：US20240053781A1
公开(公告)日：2024-02-15
申请号：US18255109
申请日：2021-11-19
申请人： ams Sensors Belgium BVBA
发明人： Carlo FIOCCHI , Federica RESTA , Marco CROCE
IPC分类号： G05F1/573 , G05F1/575
CPC分类号： G05F1/573 , G05F1/575
摘要： A low-dropout regulator with inrush current limiting capabilities may include an output terminal to provide an output signal, a first current branch comprising a pass device connected to the output terminal, and a second current branch comprising a driver transistor and a current generator. The low-dropout regulator may further include an error amplifier to control the driver transistor. The error amplifier may have a first input node to apply a reference signal, and a second input node coupled to the output terminal. The low-dropout regulator may include a current mirror to couple the second current branch to the first current branch. The current mirror is configured to mirror a current in the second current branch to the output current branch.

22. 发明授权

US11899479B2 Digitally controlled low dropout regulator 有权
公开(公告)号：US11899479B2
公开(公告)日：2024-02-13
申请号：US17616228
申请日：2020-03-16
申请人： SONY SEMICONDUCTOR SOLUTIONS CORPORATION
发明人： Daisuke Ide , Nobuhiko Shigyo , Keita Komagata , Hiroyuki Watanabe , Takahiro Naito
IPC分类号： G05F1/575 , G05F1/56 , H02M1/00
CPC分类号： G05F1/561 , G05F1/56 , G05F1/575 , H02M1/0045
摘要： To provide a digitally controlled LDO regulator that can control an output voltage even during an auto-zero processing period. A digitally controlled low dropout regulator is provided that includes a plurality of AD converters and an impedance variable circuit, each of the plurality of AD converters including a comparator, in which a first signal from each of the plurality of AD converters is input to the impedance variable circuit; a second signal output from the impedance variable circuit is input to one of two terminals of each of the plurality of AD converters; when one of the plurality of AD converters is in operation, another of the plurality of AD converters performs auto-zero processing to set a voltage value used as a reference; and the comparator compares a voltage value of the second signal input to the one of the two terminals with the set voltage value.

23. 发明公开

US20240045454A1 GALLIUM NITRIDE REFERENCE VOLTAGE GENERATION CIRCUIT 审中-公开
公开(公告)号：US20240045454A1
公开(公告)日：2024-02-08
申请号：US18323330
申请日：2023-05-24
申请人： Navitas Semiconductor Limited
发明人： Songming Zhou , Tao Liu
IPC分类号： G05F1/46 , G05F1/575 , G05F1/59
CPC分类号： G05F1/468 , G05F1/575 , G05F1/59
摘要： Gallium nitride reference voltage generation circuits. In one aspect, the circuit includes a first gallium nitride (GaN)-based transistor having a first gate terminal, a first source terminal and a first drain terminal, a second GaN-based transistor having a second gate terminal, a second source terminal and a second drain terminal, the second gate terminal coupled to the first drain terminal, an input terminal coupled to the first gate terminal and arranged to receive a first voltage, an output terminal coupled to the second source terminal, a power supply terminal coupled to the first drain terminal and the second drain terminal, and a feedback circuit coupled between the first source terminal and the second source terminal, where the first source terminal is coupled to a ground through a first impedance element, the first impedance element having a positive temperature coefficient.

24. 发明公开

US20240036595A1 LOW-DROPOUT VOLTAGE REGULATOR CIRCUIT AND CORRESPONDING METHOD OF OPERATION 审中-公开
公开(公告)号：US20240036595A1
公开(公告)日：2024-02-01
申请号：US18224897
申请日：2023-07-21
申请人： STMicroelectronics S.r.l.
发明人： Umberto FERLITO , Michele VAIANA , Giuseppe BRUNO , Alfio Dario GRASSO
IPC分类号： G05F1/565 , G05F1/575
CPC分类号： G05F1/565 , G05F1/575
摘要： A low-drop out voltage regulator includes a pass element arranged between an input terminal and an output terminal, a feedback network configured to produce a feedback voltage derived from an output voltage, and an error amplifier configured to drive the pass element as a function of a difference between the feedback voltage and a reference voltage. An output transistor coupled in series with the pass element is controlled by a mode selection circuit. In response to assertion of a mode selection signal, the mode selection circuit turns on the output transistor to sink a current with a controlled magnitude from the output node. In response to de-assertion of the mode selection signal, the mode selection circuit sinks a current with a controlled magnitude from a control terminal of the output transistor to turn off the output transistor at a controlled rate.

25. 发明授权

US11886234B2 Adaptive voltage converter 有权
公开(公告)号：US11886234B2
公开(公告)日：2024-01-30
申请号：US17512346
申请日：2021-10-27
申请人： AMBIQ MICRO, INC.
发明人： Scott Hanson
IPC分类号： H02M3/158 , G06F1/06 , H03L7/18 , H03L7/06 , H03L7/181 , G06F1/3237 , G06F1/3287 , G06F1/12 , G06F11/30 , G06F11/34 , G06F13/10 , G01R19/00 , G05F1/56 , H03K17/687 , H03M1/12 , H03L7/00 , G05F1/575 , G06F1/3296 , H02M1/00
CPC分类号： G06F1/06 , G01R19/0084 , G05F1/56 , G05F1/575 , G06F1/12 , G06F1/3237 , G06F1/3287 , G06F1/3296 , G06F11/3041 , G06F11/3414 , G06F13/102 , H02M3/158 , H03K17/687 , H03L7/00 , H03L7/06 , H03L7/18 , H03L7/181 , H03M1/12 , H02M1/0045 , Y02B70/10 , Y02D10/00
摘要： An adaptive voltage converter adapted to compensate for the exponential sensitivities of sub-threshold and near-threshold circuits. The converter can change its power/performance characteristics between different energy modes. The converter may comprise two or more voltage converters/regulators. A multiplexing circuit selects between the outputs of the several converters/regulators depending on the state of a control signal generated by a control facility. The converter is specially adapted to change the output of each converter/regulator based on a number of variables, including, for example, process corner, temperature and input voltage.

26. 发明公开

US20240028061A1 FEEDBACK CONTROL SYSTEM AND FEEDBACK CONTROL METHOD 审中-公开
公开(公告)号：US20240028061A1
公开(公告)日：2024-01-25
申请号：US18334391
申请日：2023-06-14
申请人： NOVATEK Microelectronics Corp.
发明人： Shan-Chiang TSOU , Chi-Yi LO , Jen-Hao LIAO
IPC分类号： G05F1/565 , G05F1/575
CPC分类号： G05F1/565 , G05F1/575
摘要： A feedback control system includes a driver chip and a power chip. The driver chip includes a first output terminal and a first input terminal. The first output terminal is to output a first detection voltage. The power chip includes a second input terminal and a second output terminal. The second input terminal is directly connected to the first output terminal, and the second output terminal is coupled to the first input terminal. The power chip generates a driving voltage according to the first detection voltage and outputs the driving voltage to the first input terminal.

27. 发明授权

US11881344B2 Power system 有权
公开(公告)号：US11881344B2
公开(公告)日：2024-01-23
申请号：US18117374
申请日：2023-03-03
申请人： Delta Electronics, Inc.
发明人： Yahong Xiong , Da Jin , Qinghua Su
IPC分类号： H05K1/14 , H01F27/28 , G05F1/575 , H01F27/02 , H01F27/29 , G06F1/18 , H01F17/04 , H05K1/02 , H05K1/16 , H05K1/18 , H05K7/14 , H05K7/20 , H01L25/16 , H01R12/52 , H01R12/58 , H02M3/158 , H05K1/11 , H01F17/06 , H02M3/00 , H01F27/24 , H05K3/28
CPC分类号： H01F27/2804 , G05F1/575 , G06F1/183 , H01F17/04 , H01F17/06 , H01F27/02 , H01F27/24 , H01F27/292 , H01L25/16 , H01R12/52 , H01R12/58 , H02M3/003 , H02M3/1584 , H05K1/0203 , H05K1/111 , H05K1/117 , H05K1/145 , H05K1/165 , H05K1/181 , H05K1/186 , H05K3/284 , H05K7/1427 , H05K7/2089 , H05K2201/1003 , H05K2201/10015 , H05K2201/10053 , H05K2201/10166 , H05K2201/10522 , H05K2201/10636 , H05K2201/10734 , H05K2201/10984
摘要： A power system includes a power module, an electronic load and a system board. The power module includes a first surface, a second surface, a switch and a plurality of conductive parts, wherein the switch is disposed on the first surface of the power module and the plurality of conductive parts are disposed on the second surface of the power module. The electronic load includes a plurality of conductive parts. The power module and the electronic load are disposed on two opposite sides of the system board, the power module delivers power to the electronic load through the system board, and gaps and networks of the plurality of conductive parts of the power module correspond to those of the plurality of conductive parts of the electronic load.

28. 发明授权

US11880216B2 Circuit and method for mitigating transient effects in a voltage regulator 有权
公开(公告)号：US11880216B2
公开(公告)日：2024-01-23
申请号：US18181629
申请日：2023-03-10
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Ramakrishna Ankamreddi , Isha Agrawal , Rohit Phogat
IPC分类号： G05F1/575 , G05F1/56
CPC分类号： G05F1/575 , G05F1/56
摘要： Described embodiments include a voltage regulator circuit comprising an output voltage terminal configured to be coupled to a load that draws a load current, first and second amplifiers, and first, second, third, fourth and fifth transistors. The embodiment also includes a dynamic R-C network coupled between the third amplifier input and the seventh transistor current terminal, wherein the dynamic R-C network includes capacitors and MOS-based resistors, a third amplifier having a fourth amplifier input and a third amplifier output, wherein the fourth amplifier input is coupled to the output voltage terminal, and a capacitor that is coupled between the output voltage terminal and the fourth amplifier input.

29. 发明公开

US20240004410A1 LOW DROPOUT REGULATOR 审中-公开
公开(公告)号：US20240004410A1
公开(公告)日：2024-01-04
申请号：US18037922
申请日：2021-11-26
申请人： Agile Analog Ltd
发明人： Mallikarjun Banappagol
IPC分类号： G05F1/575 , G05F1/59 , G05F1/565 , G05F3/26
CPC分类号： G05F1/575 , G05F1/59 , G05F1/565 , G05F3/262
摘要： A low dropout regulator comprising: a supply voltage connection for receiving a supply voltage; a load voltage output connection for providing a load voltage to a load; load voltage output control circuitry comprising a pass transistor configured to regulate the load voltage based on a voltage at its gate region; adaptive biasing circuitry comprising: a biasing transistor configured to regulate the voltage provided to the gate region of the pass transistor based on a voltage provided to a gate region of the biasing transistor; and operational transconductance amplifier, OTA, circuitry comprising a first OTA transistor and a second OTA transistor, wherein a gate region of the first OTA transistor is arranged to receive a reference voltage and a gate region of the second OTA transistor is arranged to receive a voltage indicative of the load voltage; and adaptive compensation circuitry comprising: (i) a first compensation capacitor having a first electrode and a second electrode, (ii) a second compensation capacitor having a first electrode and a second electrode, and (iii) a first compensation transistor, wherein the second electrode of the first compensation capacitor is coupled to a first region of the first compensation transistor, and wherein the first electrode of the second compensation capacitor is coupled to both a second and a gate region of the first compensation transistor; wherein a first region of the second OTA transistor is coupled to: (i) the supply voltage connection, (ii) the first electrode of the first compensation capacitor, and (iii) the gate region of the biasing transistor; and wherein a second electrode of the second compensation capacitor is coupled to a first region of the biasing transistor.

30. 发明公开

US20230418320A1 LOW DROPOUT REGULATOR AND ELECTRONIC DEVICE 审中-公开
公开(公告)号：US20230418320A1
公开(公告)日：2023-12-28
申请号：US18252934
申请日：2021-11-17
申请人： Shanghai Awinic Technology Co., Ltd.
发明人： Zhipeng ZHU , Chao YANG
IPC分类号： G05F1/575
CPC分类号： G05F1/575
摘要： Provided are a low dropout regulator and an electronic device. The low dropout regulator comprises a control unit electrically connected to a second capacitor, the control unit being used for controlling the connection or disconnection between a first electrode plate of the second capacitor and a second end of a power tube. Therefore, when the low dropout regulator is in a standby state, the control unit controls the disconnection between the first electrode plate of the second capacitor and the second end of the power tube, such that the second end of the power tube has a relatively small connection capacitance, so as to ensure the separation of a dominant pole point at a control end of the power tube from a secondary pole point at the second end of the power tube, and thus, the low dropout regulator has a high loop stability when same is in the standby state, thereby improving the performance of the low dropout regulator.

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