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公开(公告)号：US11716027B2
公开(公告)日：2023-08-01
申请号：US17456154
申请日：2021-11-22
CPC分类号： H02M3/1584 , G01R19/16538 , G02B27/017 , G05F1/575 , G09G3/3696 , H02M1/0025 , H02M3/071
摘要： A power supply device includes a switching converter, an inductor, and a linear voltage regulator. The inductor is electrically connected between a first switching node and a second switching node of the switching converter. The power supply device is configured such that when the switching converter is in an ON state the inductor is charged with a charging current. The power supply device is further configured such that when the switching converter is in an OFF state, the switching converter modulates an input voltage to generate a positive-bias output voltage at a positive-bias output node, the charging current flows from the inductor such that a negative input voltage is generated at a linear voltage regulator input node, and the linear voltage regulator regulates the negative input voltage to generate a negative-bias output voltage at a negative-bias output node.
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62.发明公开公开(公告)号：US20230221745A1
公开(公告)日：2023-07-13
申请号：US17972865
申请日：2022-10-25
发明人： Hua-Chun TSENG
摘要： An overcurrent detection device of the present disclosure has two charge storage circuits, a control module and a counter circuit. The control module controls and provides charge paths of the two charge storage circuits, so that the two charge storage circuits are charged by a reference current and a sensed current respectively, wherein the sensed current is generated by an output current of a low-dropout regulator. The counter circuit obtains a voltage of the charge storage circuit charged by the sensed current, and counts accordingly. When the counting of the counter circuit reaches a specific value, the counter circuit outputs an overcurrent detection signal. When the output current is an overcurrent, the counter circuit first counts to the specific value before the charge storage circuit which is charged by the reference current is charged to a specific voltage.
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公开(公告)号：US20230221743A1
公开(公告)日：2023-07-13
申请号：US17574584
申请日：2022-01-13
发明人： YU-TSO LIN , MIN-SHUEH YUAN
IPC分类号： G05F1/575
CPC分类号： G05F1/575
摘要： The present disclosure provide an electronic device. The electronic device includes a voltage generator and a low drop-out (LDO) circuit. The voltage generator has an input and an output. The LDO circuit has an input electrically connected to the output of the voltage generator. The voltage generator includes a first voltage regulator having a first terminal and a second terminal. The first terminal of the first voltage regulator is electrically connected to the output of the voltage generator.
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公开(公告)号：US11693439B2
公开(公告)日：2023-07-04
申请号：US17409735
申请日：2021-08-23
申请人： GUTSCHSEMI LIMITED
发明人： Kuo-Wei Chang
摘要： A voltage regulator is provided. The voltage regulator includes a level shifter, a low-pass filter, and a voltage regulating circuit. The level shifter shifts a voltage value of a reference voltage signal to generate a set voltage signal. The low-pass filter filters the set voltage signal to generate a filtered voltage signal. The voltage regulating circuit outputs an output voltage signal according to the filtered voltage signal and adjusts a voltage value of the filtered voltage signal according to a change of the output voltage signal to stabilize a voltage value of the output voltage signal.
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公开(公告)号：US11693438B2
公开(公告)日：2023-07-04
申请号：US17406148
申请日：2021-08-19
发明人： Shao-Chueh Hu
摘要： A voltage regulation circuit includes a node, a voltage regulator, a plurality of load units and a voltage feedback circuit. The node has a node voltage. The voltage regulator is electrically connected to the node. The load units are electrically connected to the voltage regulator via the node. The load units are driven by the node voltage and have at least one load state. The voltage feedback circuit is electrically connected between the voltage regulator and the node. The voltage feedback circuit includes a switch and receives the node voltage and a control signal. The control signal includes the at least one load state. The voltage feedback circuit controls the switch according to the at least one load state of the control signal to output a feedback voltage. The voltage regulator adjusts the node voltage according to the feedback voltage.
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公开(公告)号：US11687109B2
公开(公告)日：2023-06-27
申请号：US17186755
申请日：2021-02-26
CPC分类号： G05F1/575 , G01R31/2884
摘要： The present disclosure describes systems and methods for identifying defective components in a power integrated circuit. In one such system, a voltage regulator circuit is embedded in an integrated circuit device, wherein the voltage regulator circuit includes a control feedback loop having a compensation capacitor that is configured to maintain a stable output voltage of the voltage regulator voltage at a set value or range. Additionally, a test circuitry is embedded in the integrated circuit device, wherein the test circuitry comprises a voltage source that is configured to generate a cyclical test input signal that passes through the control feedback loop. Accordingly, the test circuitry is configured to provide a test output signal to an output pin of the integrated circuit device that indicates a performance level of the compensation capacitor in the control feedback loop of the voltage regulator circuit. Other systems and methods are also included.
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公开(公告)号：US20230195155A1
公开(公告)日：2023-06-22
申请号：US18167750
申请日：2023-02-10
发明人： Chenyang GAO , Sheng LIN
摘要： Disclosed are a self-adaptive fast-response LDO circuit and a chip thereof. Said circuit comprises a band gap reference circuit, an error amplifier, a power tube, a feedback resistor network, and a self-adaptive acceleration response circuit. The current of the power tube is mirrored by means of the self-adaptive acceleration response circuit, such that the tail current of a differential circuit in the error amplifier can accelerate charging and discharging adaptively according to load changes of the LDO circuit. In addition, before the LDO circuit is stably balanced, the characteristics of unbalanced states of two differential input ends of the error amplifier are used to perform fast charging and discharging on the tail current of the differential circuit and a gate electrode of the power tube in an extremely short time, such that the response time of the LDO circuit is greatly reduced.
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公开(公告)号：US20230195151A1
公开(公告)日：2023-06-22
申请号：US18048163
申请日：2022-10-20
申请人： NXP B.V.
摘要： It is described a voltage regulator device (100), comprising:
i) a power device (150), configured to receive an input signal (151) and to produce a corresponding output signal (152);
ii) a comparator device (110), coupled via a feedback path (140) to the power device (150), and configured to receive the output signal (152) as a feedback signal (141), and to produce a compared feedback signal (112); and
iii) a digital modulation device (120), arranged between the comparator device (110) and the power device (150), and configured to digitally modulate the compared feedback signal (112), and to provide the digitally modulated signal (121) to the power device (150), wherein the digital modulation device (120) comprises:
iiia) a delta-sigma (122),
iiib) a quantizer (124), and
iiic) a feedforward path (128), configured to feedforward the compared feedback signal (112) beyond the delta-sigma (122).-
公开(公告)号：US20230188038A1
公开(公告)日：2023-06-15
申请号：US17546368
申请日：2021-12-09
CPC分类号： H02M3/1582 , G11C5/14 , G05F1/575
摘要： In an embodiment, an apparatus is disclosed that comprises a voltage regulator and a regulator booster. The voltage regulator is supplied by an input and is configured to generate a regulated output. The regulated output has a voltage corresponding to an operating point of the voltage regulator. The regulator booster is connected to the voltage regulator and, when activated, is configured to boost the voltage of the regulated output by a target amount. The target amount is at least a portion of a magnitude of a voltage droop relative to the operating point that is caused by a change in a current load on the regulated output.
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公开(公告)号：US20230185323A1
公开(公告)日：2023-06-15
申请号：US18165265
申请日：2023-02-06
发明人： Yi-Hsiang WANG , Jaw-Juinn HORNG
CPC分类号： G05F1/575 , G05F1/59 , H03F3/45273
摘要： A device is provided. The device includes an operational amplifier, an output circuit, a first capacitor, and a second capacitor. The operational amplifier is configured to generate an output according to a feedback signal. The output circuit is configured to generate a first current signal in response to a supply voltage and the output of the operational amplifier. The first current signal includes a first ripple signal. The first capacitor and the second capacitor are coupled in parallel between the operational amplifier and the output circuit. The first capacitor is configured to receive the first current signal and feedback to the operational amplifier the first ripple signal.
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