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11.发明申请公开(公告)号：US20180013347A1
公开(公告)日：2018-01-11
申请号：US15419259
申请日：2017-01-30
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Parin Patel , Damon Lee , Evaldo Miranda, JR. , Mark A Yoshimoto , Jamie L. Langlinais
CPC classification number: H02M3/1584 , H02M2003/1566
Abstract: A multi-phase switch mode, voltage regulator has a transient mode portion in which a phase control output is coupled to one or more control inputs of one or more switch circuits that conduct inductor current through one or more transient phase inductors, from amongst a number of phase inductors. A slew mode control circuit detects a high slope and then a low slope in the feedback voltage and, in between detection of the high slope and the low slope, pulses the phase control output of the transient mode portion so that the switch circuit that conducts transient phase inductor current adds power to, or sinks power from, the power supply output. Other embodiments are also described.
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12.发明申请公开(公告)号：US20170093276A1
公开(公告)日：2017-03-30
申请号：US14871062
申请日：2015-09-30
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Parin Patel
IPC: H02M3/04
CPC classification number: H02M3/04 , H02M3/1584 , H02M7/493 , H02M7/53806 , H02M7/5381
Abstract: This disclosure relates to switch mode multiphase DC-DC voltage regulator circuits. In prior art regulators, for standard load transients, the worst voltage undershoot happens during a “zero to max,” i.e., “load step” operation. When the load is released, the inductor current ramps down, eventually crossing zero, where it is then held at a negative current limit (i.e., “NLIMIT”) by a Negative Current Limit Detector Circuit. However, if the next load step were to happen right at the instant when the inductor hits the negative current limit, it would take additional time recover to zero before it could catch up to the load step, thus causing additional voltage drop. Regulators disclosed herein comprise specialized zero crossing detection circuitry that intelligently prevents the inductor currents in one or more of the phases of the regulator from ramping below zero, thereby improving voltage droop in the system during fast positive load transients.
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13.发明申请DISCRETE NARROW-BAND SWITCHING FREQUENCY AVOIDANCE OF A SWITCH MODE POWER CONVERTER 审中-公开开关模式电源转换器的分离式窄带开关频率避雷公开(公告)号：US20160308438A1
公开(公告)日：2016-10-20
申请号：US15192600
申请日：2016-06-24
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Parin Patel
CPC classification number: H02M3/156 , H02M1/08 , H02M1/44 , H02M2001/0032 , Y02B70/16
Abstract: The switching frequency of a switch mode PFM power converter is compared with a predetermined frequency range that contains the operating frequency of a nearby clocked sub-system. In response to the switching frequency coming into the range, a parameter of the power converter is changed from an original value, so as to cause the switching frequency to go out of the range.
Abstract translation: 将开关模式PFM功率转换器的开关频率与包含附近计时子系统的工作频率的预定频率范围进行比较。 响应于开关频率进入该范围，功率转换器的参数从原始值改变，以使开关频率超出该范围。
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14.发明申请公开(公告)号：US20150288285A1
公开(公告)日：2015-10-08
申请号：US14675455
申请日：2015-03-31
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Parin Patel , Talbott M. Houk
IPC: H02M3/158
CPC classification number: H02M3/1584 , H02M1/40 , H02M3/158 , H02M2001/0025 , H02M2001/0032 , H02M2003/1566 , Y02B70/16
Abstract: A power conversion circuit has multiple phases wherein each of the phases has an inductor coupled to a power switch circuit and is coupled to an output node. A power conversion controller controls the switching of one or more of the phases to yield a regulated voltage on the output node. The controller uses a variable inductor current limit for one or more designated phases, and temporarily increases the variable inductor current limit during a transient condition. Other embodiments are also described and claimed.
Abstract translation: 功率转换电路具有多个相位，其中每个相位具有耦合到功率开关电路并且耦合到输出节点的电感器。 电力转换控制器控制一个或多个相的切换以在输出节点上产生调节电压。 控制器对一个或多个指定相位使用可变电感器电流限制，并且在瞬态条件期间临时增加可变电感器电流限制。 还描述和要求保护其他实施例。
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公开(公告)号：US10560107B1
公开(公告)日：2020-02-11
申请号：US16450754
申请日：2019-06-24
Applicant: Apple Inc.
Inventor： Parin Patel , Jamie L. Langlinais , Mark A. Yoshimoto , Rajarshi Paul
Abstract: Power supply topologies can leverage relatively smaller component sizes while meeting the power requirements of loads. In a first stage, a determination is made as to whether a high current limit is exceeded for a first duration, or whether an average current provided exceeds an average current limit, such that a power supply component (e.g., inductor) is thermally stressed. In either event, a clock frequency is reduced by a first factor. In a second stage, a determination is made as to whether an output voltage drops below a voltage threshold. If so, the clock frequency may be further reduced by a second factor.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20180013348A1
公开(公告)日：2018-01-11
申请号：US15627082
申请日：2017-06-19
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Parin Patel , Damon Lee , Evaldo Miranda, JR. , Mark A. Yoshimoto , Jamie L. Langlinais , Jonathan M. Audy
CPC classification number: H02M3/158 , H02M1/083 , H02M1/14 , H02M3/157 , H02M3/1584 , H02M2001/0009 , H02M2003/1566 , H03K5/04
Abstract: A multi-phase switch mode, voltage regulator has a transient mode portion in which a phase control output is coupled to one or more control inputs of one or more switch circuits that conduct inductor current through one or more transient phase inductors, from amongst a number of phase inductors. A slew mode control circuit detects a high slope and then a low slope in the feedback voltage and, in between detection of the high slope and the low slope, pulses the phase control output of the transient mode portion so that the switch circuit that conducts transient phase inductor current adds power to, or sinks power from, the power supply output. Other embodiments are also described.
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17.发明授权Discrete narrow-band switching frequency avoidance of a switch mode power converter 有权离散窄带开关频率避免开关模式电源转换器公开(公告)号：US09379606B2
公开(公告)日：2016-06-28
申请号：US13905506
申请日：2013-05-30
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Parin Patel
CPC classification number: H02M3/156 , H02M1/08 , H02M1/44 , H02M2001/0032 , Y02B70/16
Abstract: The switching frequency of a switch mode PFM power converter is compared with a predetermined frequency range that contains the operating frequency of a nearby clocked sub-system. In response to the switching frequency coming into the range, a parameter of the power converter is changed from an original value, so as to cause the switching frequency to go out of the range.
Abstract translation: 将开关模式PFM功率转换器的开关频率与包含附近计时子系统的工作频率的预定频率范围进行比较。 响应于开关频率进入该范围，功率转换器的参数从原始值改变，以使开关频率超出该范围。
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公开(公告)号：US09329697B2
公开(公告)日：2016-05-03
申请号：US13629276
申请日：2012-09-27
Applicant: Apple Inc.
Inventor： Rajarshi Paul , Yehonatan Perez , Stephen J. Hrinya , Eugene L. Shoykhet
Abstract: A host electronic device may be coupled to an accessory electronic device. During normal operation, the host device may supply the accessory device with power over a power supply line. Back-powering events in which the accessory device delivers power to the host device may be prevented by interposing a protection transistor in the power supply line. A current mirror may be formed using the protection transistor and an additional transistor that produces a sense current proportional to the amount of current that is flowing through the power supply line. A current-to-voltage amplifier may produce a sense voltage that is proportional to the sense current. A bias circuit may be used to bias the sense current through the current mirror. A control circuit may compare the sense voltage to one or more reference voltages and turn off the protection transistor when appropriate to prevent back-powering of the host device.
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19.发明申请DISCRETE NARROW-BAND SWITCHING FREQUENCY AVOIDANCE OF A SWITCH MODE POWER CONVERTER 有权开关模式电源转换器的分离式窄带开关频率避雷公开(公告)号：US20140354257A1
公开(公告)日：2014-12-04
申请号：US13905506
申请日：2013-05-30
Applicant: APPLE INC.
Inventor： Rajarshi Paul , Parin Patel
IPC: H02M3/156
CPC classification number: H02M3/156 , H02M1/08 , H02M1/44 , H02M2001/0032 , Y02B70/16
Abstract: The switching frequency of a switch mode PFM power converter is compared with a predetermined frequency range that contains the operating frequency of a nearby clocked sub-system. In response to the switching frequency coming into the range, a parameter of the power converter is changed from an original value, so as to cause the switching frequency to go out of the range.
Abstract translation: 将开关模式PFM功率转换器的开关频率与包含附近计时子系统的工作频率的预定频率范围进行比较。 响应于开关频率进入该范围，功率转换器的参数从原始值改变，以使开关频率超出该范围。
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公开(公告)号：US20130335057A1
公开(公告)日：2013-12-19
申请号：US13629276
申请日：2012-09-27
Applicant: APPLE INC.
Inventor： Rajarshi Paul , Yehonatan Perez , Stephen J. Hrinya , Eugene L. Shoykhet
Abstract: A host electronic device may be coupled to an accessory electronic device. During normal operation, the host device may supply the accessory device with power over a power supply line. Back-powering events in which the accessory device delivers power to the host device may be prevented by interposing a protection transistor in the power supply line. A current mirror may be formed using the protection transistor and an additional transistor that produces a sense current proportional to the amount of current that is flowing through the power supply line. A current-to-voltage amplifier may produce a sense voltage that is proportional to the sense current. A bias circuit may be used to bias the sense current through the current mirror. A control circuit may compare the sense voltage to one or more reference voltages and turn off the protection transistor when appropriate to prevent back-powering of the host device.
Abstract translation: 主机电子设备可以耦合到辅助电子设备。 在正常操作期间，主机设备可以通过电源线向附件设备供电。 可以通过在电源线中插入保护晶体管来防止附件设备向主机设备传送电力的反向供电事件。 可以使用保护晶体管和产生与流过电源线的电流量成比例的感测电流的附加晶体管来形成电流镜。 电流 - 电压放大器可以产生与感测电流成正比的感测电压。 可以使用偏置电路来将感测电流偏置通过电流镜。 控制电路可以将感测电压与一个或多个参考电压进行比较，并且在适当时关闭保护晶体管以防止主机设备的反向供电。
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