专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US12101097B2 Coulomb counter circuitry 有权
公开(公告)号：US12101097B2
公开(公告)日：2024-09-24
申请号：US17987448
申请日：2022-11-15
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Paul Wilson , James T. Deas , Mucahit Kozak , Graeme G. Mackay
IPC分类号： H03M1/10 , H03M1/06
CPC分类号： H03M1/1023 , H03M1/0609
摘要： Coulomb counter circuitry operable in a first mode of operation and a second mode of operation, the coulomb counter circuitry comprising: first analog to digital converter (ADC) circuitry configured to generate a first ADC output signal indicative of a current through a load coupled to the coulomb counter circuitry; second analog to digital converter (ADC) circuitry; offset correction circuitry; and accumulator circuitry configured to generate a signal indicative of a cumulative amount of charge transferred to the load, wherein in the second mode of operation, the coulomb counter circuitry is operable to enable the second ADC circuitry and to generate an offset correction factor based at least in part on a second ADC output signal output by the second ADC circuitry, and wherein in subsequent operation of the coulomb counter circuitry in the first mode of operation, the offset correction circuitry applies the offset correction factor to the first ADC output signal.

2. 发明授权

US11522460B2 Optimizing the control of a hysteretic power converter at low duty cycles 有权
公开(公告)号：US11522460B2
公开(公告)日：2022-12-06
申请号：US17152053
申请日：2021-01-19
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Jason W. Lawrence , Graeme G. Mackay , Sakkarapani Balagopal
IPC分类号： H02M3/158 , G01R19/165 , H03K5/24 , H02M1/00
摘要： A method for controlling a current associated with a power converter may comprise controlling the current based on at least a peak current threshold level for the current and a valley current threshold level for the current, and further controlling the current based on a duration of time that the power converter spends in a switching state of the power converter.

3. 发明授权

US11522440B2 Use of shared feedback among two or more reactive schemes 有权
公开(公告)号：US11522440B2
公开(公告)日：2022-12-06
申请号：US17171815
申请日：2021-02-09
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Ajit Sharma , Jason W. Lawrence , Graeme G. Mackay
IPC分类号： H02M1/32
摘要： A power delivery system may include a power converter configured to electrically couple to a power source and further configured to supply electrical energy to one or more loads electrically coupled to an output of the power converter and control circuitry configured to control the power converter in accordance with a control variable. The control circuitry may include a first control mechanism configured to generate a first intermediate control variable based on a first physical quantity associated with the power delivery system, a second control mechanism configured to generate a second intermediate control variable based on a second physical quantity associated with the power delivery system, a selector configured to select the control variable from the first intermediate control variable and the second intermediate control variable, and a shared feedback memory element configured to feed back the control variable to inputs of the first control mechanism and the second control mechanism, such that the first control mechanism generates the first intermediate control variable based on the first physical quantity and the control variable, and the second control mechanism generates the second intermediate control variable based on the second physical quantity and the control variable.

4. 发明授权

US11953531B2 Sense resistor and method for forming same 有权
公开(公告)号：US11953531B2
公开(公告)日：2024-04-09
申请号：US17118330
申请日：2020-12-10
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Kathryn R. Holland , Bo-Ren Wang , Ravi K. Kummaraguntla , Graeme G. Mackay , Christian Larsen
IPC分类号： G01R27/02 , H01C1/14 , H01C1/16 , H01C17/00
CPC分类号： G01R27/02 , H01C1/14 , H01C1/16 , H01C17/00
摘要： An apparatus may include a sense resistor comprising a plurality of parallel-coupled resistor elements, a plurality of positive voltage sense points, and a plurality of negative voltage sense points. A first passive combination network may be configured to combine the plurality of positive voltage sense points into a single positive sense terminal and a second passive combination network may be configured to combine the plurality of negative voltage sense points into a single negative sense terminal. The first passive combination network and the second passive combination network may be arranged such that a sense voltage is measurable between the single positive sense terminal and the single negative sense terminal and a dependence of the sense voltage on a variation in current density in the parallel-coupled resistor elements is minimized.

5. 发明授权

US11909317B2 Efficient use of energy in a switching power converter 有权
公开(公告)号：US11909317B2
公开(公告)日：2024-02-20
申请号：US18174106
申请日：2023-02-24
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Eric J. King , Ajit Sharma , Lingli Zhang , Christian Larsen , Graeme G. Mackay
IPC分类号： H02M3/158 , H02M1/08 , H02M1/00 , H03G3/00 , H03F3/19
CPC分类号： H02M3/158 , H02M1/008 , H02M1/08 , H02M3/1584 , H03F3/19 , H03G3/004
摘要： A system may include a power converter having a maximum allowable input power drawn from a power source, an energy storage element coupled to an output of the power converter at a top plate of the energy storage element, wherein the energy storage element is configured to store excess energy, and control circuitry configured to, when an input power of the power converter exceeds the maximum allowable input power, cause excess energy stored in the energy storage element to be consumed by circuitry coupled to the output of the power converter, and in order to maintain positive voltage headroom for the circuitry coupled to the output of the power converter, selectively couple a bottom plate of the energy storage element to the power source such that excess energy stored by the circuitry coupled to the output of the power converter is consumed from the energy storage device when the input power of the power converter exceeds the maximum allowable input power.

6. 发明授权

US11616434B2 Multiphase inductive boost converter with multiple operational phases 有权
公开(公告)号：US11616434B2
公开(公告)日：2023-03-28
申请号：US17892575
申请日：2022-08-22
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Eric J. King , John L. Melanson , Graeme G. Mackay , Lingli Zhang
IPC分类号： H02J7/00 , H02M3/04 , H04R3/00
摘要： A battery management system configured to electrically couple to a battery may include a boost converter comprising a plurality of switches arranged to provide a boosted output voltage at an output of the boost converter from a source voltage of the battery and a bypass switch coupled between the battery and the output, wherein the battery management system is operable in a plurality of modes comprising a bypass mode wherein the source voltage is bypassed to the output and when the battery management system is in the bypass mode, at least one switch of the plurality of switches is enabled to increase a conductance between the battery and the output.

7. 发明授权

US11552569B2 Randomization of current in a power converter 有权
公开(公告)号：US11552569B2
公开(公告)日：2023-01-10
申请号：US17119497
申请日：2020-12-11
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Graeme G. Mackay , Jason W. Lawrence
IPC分类号： H02M3/158 , H02M1/44 , H02M1/00 , H02M3/156 , H02M3/157 , H02M1/15 , H02M3/04
摘要： A method of randomizing inductor current in at least one of a plurality of parallel coupled peak valley current-controlled power converters may include comparing the inductor current to a threshold to generate a comparison signal, delaying the comparison signal by a plurality of delay amounts to generate a plurality of delayed versions of the comparison signal, and randomly selecting one of the plurality of delayed versions of the comparison signal for controlling the inductor current during one or both of a charging state and a transfer state of the at least one of the plurality of parallel coupled peak/valley current-controlled power converters.

8. 发明授权

US11837956B2 Short detection for inductive switching converters 有权
公开(公告)号：US11837956B2
公开(公告)日：2023-12-05
申请号：US17478433
申请日：2021-09-17
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Hasnain Akram , Graeme G. Mackay , Lingli Zhang , Ruoxin Jiang , Sakkarapani Balagopal , Theodore M. Burk
IPC分类号： H02M1/32 , H02M3/158 , H02M1/00
CPC分类号： H02M3/158 , H02M1/0009 , H02M1/32
摘要： A method for determining if an inductor coupled to a switching network has been electrically shorted may include applying a voltage across the inductor for a predetermined period of time, controlling an impedance in an electrical path of a voltage source generating the voltage and the inductor, sensing an inductor current through the inductor, comparing the inductor current with a predetermined current threshold, and determining whether the inductor has been electrically shorted based on the inductor current, the predetermined current threshold, and the predetermined period of time.

9. 发明授权

US11764595B2 Clamping current limit of a hysteretic power converter to a minimum value to ensure graceful shutdown at battery end of life 有权
公开(公告)号：US11764595B2
公开(公告)日：2023-09-19
申请号：US17237373
申请日：2021-04-22
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Graeme G. Mackay , Ajit Sharma , Jason W. Lawrence , Eric J. King
IPC分类号： H02J7/00 , H01M10/44 , H02M3/158
CPC分类号： H02J7/0048 , H01M10/44 , H02M3/1582
摘要： A system may include a power source, a power converter having an input coupled to the power source and an output for supplying electrical energy to a load, and a control circuit for controlling operation of the power converter. The control circuit may include a first feedback control subsystem configured to monitor an output voltage present at the output of the power converter and regulate the output voltage at or about a predetermined regulated voltage level in a normal mode of operation of the power converter and a second feedback control subsystem configured to monitor an input voltage present between the power source and the input of the power converter and responsive to the input voltage decreasing below a predetermined minimum voltage level, causing the power converter to operate in a protection mode of operation in order to maintain the input voltage at or about the predetermined minimum voltage level.

10. 发明授权

US11722054B2 Use of shared feedback among two or more reactive schemes 有权
公开(公告)号：US11722054B2
公开(公告)日：2023-08-08
申请号：US17968393
申请日：2022-10-18
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： Ajit Sharma , Jason W. Lawrence , Graeme G. Mackay
IPC分类号： H02M1/32
CPC分类号： H02M1/32
摘要： A power delivery system may include a power converter configured to electrically couple to a power source and further configured to supply electrical energy to one or more loads electrically coupled to an output of the power converter and control circuitry configured to control the power converter in accordance with a control variable. The control circuitry may include a first control mechanism configured to generate a first intermediate control variable based on a first physical quantity associated with the power delivery system, a second control mechanism configured to generate a second intermediate control variable based on a second physical quantity associated with the power delivery system, a selector configured to select the control variable from the first intermediate control variable and the second intermediate control variable, and a shared feedback memory element configured to feed back the control variable to inputs of the first control mechanism and the second control mechanism, such that the first control mechanism generates the first intermediate control variable based on the first physical quantity and the control variable, and the second control mechanism generates the second intermediate control variable based on the second physical quantity and the control variable.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式