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公开(公告)号：US20180018008A1
公开(公告)日：2018-01-18
申请号：US15718546
申请日：2017-09-28
Applicant: Google Inc.
CPC classification number: G06F1/30 , G06F1/26 , G06F1/32 , H02J7/0016 , H02J9/061 , H02J9/062 , H05K7/1492 , Y02B10/72
Abstract: A computing device is associated with a circuit for sharing and distributing backup power. During normal operating conditions, a main bus bar provides power to each computing device in a rack via a main power bus of the corresponding circuit. In the event of an AC power outage, the main power bus is deactivated and a backup power path of the circuit is activated. Backup power is provided to the device from a battery of the circuit via the backup power path. A shared power path is also activated in the circuit such that backup power may be provided from the battery to the main bus bar. By providing backup power to the main bus bar, the other computing devices in the rack that do not have sufficient backup power may receive backup power from the main bus bar until AC power is restored.
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公开(公告)号：US10141100B2
公开(公告)日：2018-11-27
申请号：US15666776
申请日：2017-08-02
Applicant: GOOGLE INC.
Inventor： Honggang Sheng , Yiming Li , Shuo Wang , Srikanth Lakshmikanthan
Abstract: In one general aspect, a converter circuit includes a magnetic core and a coil assembly. The coil assembly includes a primary winding assembly, a secondary winding assembly, and an auxiliary winding assembly. The primary winding assembly includes a conductive medium arranged in at least one primary winding layer. The secondary winding assembly includes a conductive medium arranged in at least one secondary winding layer. The auxiliary winding assembly includes a conductive medium arranged in at least one auxiliary winding layer. The at least one auxiliary winding layer includes an auxiliary winding layer disposed adjacent to a layer of the at least one primary winding layer and adjacent to a layer of the at least one secondary winding layer.
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公开(公告)号：US20190068069A1
公开(公告)日：2019-02-28
申请号：US15693393
申请日：2017-08-31
Applicant: Google Inc.
Inventor： Honggang Sheng , Liang Jia , Srikanth Lakshmikanthan
IPC: H02M3/335
Abstract: In some implementations, a programmable power adapter includes a first set of switches, a resonant circuit, a transformer, and a second set of switches. The power adapter includes control circuitry configured to provide control signals that change the voltage conversion ratios of the first set of switches and the second set of switches. The control circuitry can provide control signals causing the first set of switches to operate in one of multiple operating modes that each correspond to a different voltage conversion ratio, and the control circuitry can provide control signals causing the second set of switches to operate in one of multiple operating modes that each correspond to a different voltage conversion ratio.
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Patent Agency Ranking
公开(公告)号：US09804654B2
公开(公告)日：2017-10-31
申请号：US13705609
申请日：2012-12-05
Applicant: Google Inc.
Inventor： Udaya Kiran Ammu , Tracy Van Dyk , Cornelius O'Sullivan , Srikanth Lakshmikanthan
CPC classification number: G06F1/30 , G06F1/26 , G06F1/32 , H02J7/0016 , H02J9/061 , H02J9/062 , H05K7/1492 , Y02B10/72
Abstract: A computing device is associated with a circuit for sharing and distributing backup power. During normal operating conditions, a main bus bar provides power to each computing device in a rack via a main power bus of the corresponding circuit. In the event of an AC power outage, the main power bus is deactivated and a backup power path of the circuit is activated. Backup power is provided to the device from a battery of the circuit via the backup power path. A shared power path is also activated in the circuit such that backup power may be provided from the battery to the main bus bar. By providing backup power to the main bus bar, the other computing devices in the rack that do not have sufficient backup power may receive backup power from the main bus bar until AC power is restored.
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公开(公告)号：US09665147B1
公开(公告)日：2017-05-30
申请号：US14564680
申请日：2014-12-09
Applicant: GOOGLE INC.
Inventor： Srikanth Lakshmikanthan , Christopher Lyon
CPC classification number: G06F1/26 , H02M3/1584 , H02M3/1588 , H02M2003/1586 , Y02B70/1466
Abstract: In some implementations, a computing device may include a plurality of voltage regulators including a first voltage regulator and a second voltage regulator, and a multi-phase oscillator, connected to the first voltage regulator and the second voltage regulator, configured to synchronize the first voltage regulator and the second voltage regulator.
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6.发明授权Auto-measurement and calibration of DC resistance in current sensing applications 有权电流传感应用中直流电阻的自动测量和校准公开(公告)号：US09151817B1
公开(公告)日：2015-10-06
申请号：US13869419
申请日：2013-04-24
Applicant: Google Inc.
Inventor： Srikanth Lakshmikanthan , Eduardo M. Lipiansky , Udaya Kiran Ammu
CPC classification number: G01R35/005 , G01R19/0092 , G01R35/007
Abstract: The present invention pertains to calibration in current sensing applications. Power conversion systems such as those used in computer architectures may employ step down converters such as buck converters or other types of converters. The present invention provides calibration processes and devices to account for various parasitic resistances which are found in such systems. A calibration circuit may be coupled to the buck converter or other power conversion to determine a calibrated voltage signal for the output of the power converter. An effective DC resistance may be determined and programmed for use by a control device used. In this way, the parasitic resistances are taken into account to obtain an accurate estimate of the actual current. In turn, this enables power converters and other devices to operate within specification requirements.
Abstract translation: 本发明涉及电流感测应用中的校准。 诸如在计算机体系结构中使用的电力转换系统可以采用降压转换器，例如降压转换器或其他类型的转换器。 本发明提供校准过程和装置以解决在这种系统中发现的各种寄生电阻。 校准电路可以耦合到降压转换器或其他功率转换，以确定用于功率转换器的输出的校准电压信号。 可以确定并编程有效的直流电阻以供所使用的控制装置使用。 以这种方式，考虑寄生电阻以获得实际电流的准确估计。 反过来，这使得电源转换器和其他设备能够在规范要求范围内运行。
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公开(公告)号：US20190068071A1
公开(公告)日：2019-02-28
申请号：US15693055
申请日：2017-08-31
Applicant: Google Inc.
Inventor： Liang Jia , Srikanth Lakshmikanthan
Abstract: This specification describes a device that includes a voltage-regulated DC-DC converter comprising a switching network, a resonant circuit, and control circuitry, wherein the switching network has a switching frequency. The DC-DC converter has an output impedance and the control circuity uses a control loop to control the DC-DC converter. The control circuitry implements the control loop using: an output voltage sensor configured to sense an output voltage of the DC-DC converter; and a compensator configured to adjust operation of the DC-DC converter based on the output voltage sensed by the output voltage sensor. The DC-DC converter comprises an output impedance suppression mechanism configured to at least partially suppress increases in the output impedance of the DC-DC converter.
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公开(公告)号：US20140157008A1
公开(公告)日：2014-06-05
申请号：US13705609
申请日：2012-12-05
Applicant: Google Inc.
Inventor： Udaya Kiran Ammu , Tracy Van Dyk , Cornelius O'Sullivan , Srikanth Lakshmikanthan
IPC: G06F1/30
CPC classification number: G06F1/30 , G06F1/26 , G06F1/32 , H02J7/0016 , H02J9/061 , H02J9/062 , H05K7/1492 , Y02B10/72
Abstract: A computing device is associated with a circuit for sharing and distributing backup power. During normal operating conditions, a main bus bar provides power to each computing device in a rack via a main power bus of the corresponding circuit. In the event of an AC power outage, the main power bus is deactivated and a backup power path of the circuit is activated. Backup power is provided to the device from a battery of the circuit via the backup power path. A shared power path is also activated in the circuit such that backup power may be provided from the battery to the main bus bar. By providing backup power to the main bus bar, the other computing devices in the rack that do not have sufficient backup power may receive backup power from the main bus bar until AC power is restored.
Abstract translation: 计算设备与用于共享和分发备用电力的电路相关联。 在正常操作条件下，主母线通过相应电路的主电源总线为机架中的每个计算设备供电。 在交流电停电的情况下，主电源总线被停用，电路的备用电源路径被激活。 通过备用电源路径从电路的电池向设备提供备用电源。 在电路中也激活共享电源路径，使得备用电源可以从电池提供到主母线。 通过为主母线提供备用电源，机架中没有足够备用电源的其他计算设备可能会从主母线接收备用电源，直到电源恢复。
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