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1.发明申请公开(公告)号：US20170060213A1
公开(公告)日：2017-03-02
申请号：US14841676
申请日：2015-08-31
申请人： DELL PRODUCTS, L.P.
发明人： Feng-Yu WU , Tsai-Fu Hung , Shin-Chen Wang , Shiguo Luo , Kejiu Zhang
摘要： An information handling system (IHS) performs current calibration of a multi-phase VR using leakage current as a reference current. The IHS includes a multi-phase voltage regulator (VR) module coupled to an output port of a power supply unit (PSU). The VR module includes: a multi-phase VR having an integrated power stage that provides pulse width modulation (PWM) functionality for controlling operating phases of VR current in the multi-phase VR; and a digital controller coupled to the multi-phase VR. The controller: enables a known, high accuracy operating phase as loading calibrator for offset training; records a leakage current value as a reference current; enables a first unknown, low accuracy operating phase; determines, for the unknown operating phase, an offset value that provides a specified target current accuracy; updates an offset register for the unknown operating phase with the corresponding offset value; and disables the unknown operating phase.
摘要翻译： 信息处理系统（IHS）使用泄漏电流作为参考电流来执行多相VR的电流校准。 IHS包括耦合到电源单元（PSU）的输出端口的多相电压调节器（VR）模块。 VR模块包括：具有集成功率级的多相VR，其提供用于控制多相VR中的VR电流的工作相位的脉宽调制（PWM）功能; 以及耦合到多相VR的数字控制器。 控制器：使已知的高精度工作阶段成为校正校正器的偏移量; 记录泄漏电流值作为参考电流; 启用第一个未知，低精度的操作阶段; 为未知运行阶段确定提供指定目标电流精度的偏移值; 使用相应的偏移值更新未知运行阶段的偏移量寄存器; 并禁用未知的操作阶段。
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公开(公告)号：US20150113294A1
公开(公告)日：2015-04-23
申请号：US14059650
申请日：2013-10-22
申请人： Dell Products L.P.
发明人： Kejiu Zhang , Shiguo Luo , Hang Li
CPC分类号： H02J1/00 , G06F1/28 , H02M1/38 , H02M3/158 , H02M3/1584
摘要： A voltage regulator may comprise a high-side switch and a low-side switch for delivering electrical current to the at least one information handling resource, a high-side driver configured to drive a high-side driving voltage for regulating a first electrical current of the high-side switch, a low-side driver configured to drive a low-side driving voltage for regulating a second electrical current of the low-side switch, and a control circuit configured to operate the at least one voltage regulator in both of a fixed dead time mode and an adaptive dead time mode.
摘要翻译： 电压调节器可以包括用于将电流传送到至少一个信息处理资源的高侧开关和低侧开关，配置成驱动用于调节第一电流的高侧驱动电压的高侧驱动器 高侧开关，低侧驱动器，被配置为驱动用于调节低侧开关的第二电流的低侧驱动电压;以及控制电路，被配置为在所述低侧开关中操作所述至少一个电压调节器， 固定死区模式和自适应死区模式。
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公开(公告)号：US09971389B2
公开(公告)日：2018-05-15
申请号：US14841676
申请日：2015-08-31
申请人： DELL PRODUCTS, L.P.
发明人： Feng-Yu Wu , Tsai-Fu Hung , Shin-Chen Wang , Shiguo Luo , Kejiu Zhang
摘要： An information handling system (IHS) performs current calibration of a multi-phase VR using leakage current as a reference current. The IHS includes a multi-phase voltage regulator (VR) module coupled to an output port of a power supply unit (PSU). The VR module includes: a multi-phase VR having an integrated power stage that provides pulse width modulation (PWM) functionality for controlling operating phases of VR current in the multi-phase VR; and a digital controller coupled to the multi-phase VR. The controller: enables a known, high accuracy operating phase as loading calibrator for offset training; records a leakage current value as a reference current; enables a first unknown, low accuracy operating phase; determines, for the unknown operating phase, an offset value that provides a specified target current accuracy; updates an offset register for the unknown operating phase with the corresponding offset value; and disables the unknown operating phase.
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4.发明授权公开(公告)号：US09857854B2
公开(公告)日：2018-01-02
申请号：US15056524
申请日：2016-02-29
申请人： Dell Products L.P.
发明人： Kejiu Zhang , Shiguo Luo
CPC分类号： G06F1/26 , H02M3/158 , H02M3/1584 , H02M2001/0032 , Y02B70/16
摘要： Disclosed herein are embodiments of an improved switching regulator and a method for controlling a switching regulator, for example, to meet stringent transient demand and high efficiency requirements over wide operating range without impacting system stability. According to one embodiment, the switching regulator may be a voltage regulator comprising a plurality of voltage regulator phases, each phase comprising a power stage operable to produce an output voltage for a transient load, and a driver stage coupled for driving the power stage based on a modulated input signal supplied to the driver stage. A variable inductor is included within the power stages in order to meet stringent transient demand and high efficiency requirements over a range of load conditions and operating set points. A power controller is coupled for controlling the modulated input signals supplied to the driver stages to compensate for changing output filter characteristics when the inductance of the variable inductors changes with changes in the load current.
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公开(公告)号：US20160204604A1
公开(公告)日：2016-07-14
申请号：US15054814
申请日：2016-02-26
申请人： Dell Products L.P.
发明人： Kejiu Zhang , Shiguo Luo , Hang Li
CPC分类号： H02J1/00 , G06F1/28 , H02M1/38 , H02M3/158 , H02M3/1584
摘要： A voltage regulator may comprise a high-side switch and a low-side switch for delivering electrical current to the at least one information handling resource, a high-side driver configured to drive a high-side driving voltage for regulating a first electrical current of the high-side switch, a low-side driver configured to drive a low-side driving voltage for regulating a second electrical current of the low-side switch, and a control circuit configured to operate the at least one voltage regulator in both of a fixed dead time mode and an adaptive dead time mode.
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公开(公告)号：US10056754B2
公开(公告)日：2018-08-21
申请号：US15054814
申请日：2016-02-26
申请人： Dell Products L.P.
发明人： Kejiu Zhang , Shiguo Luo , Hang Li
CPC分类号： H02J1/00 , G06F1/28 , H02M1/38 , H02M3/158 , H02M3/1584
摘要： A voltage regulator may comprise a high-side switch and a low-side switch for delivering electrical current to the at least one information handling resource, a high-side driver configured to drive a high-side driving voltage for regulating a first electrical current of the high-side switch, a low-side driver configured to drive a low-side driving voltage for regulating a second electrical current of the low-side switch, and a control circuit configured to operate the at least one voltage regulator in both of a fixed dead time mode and an adaptive dead time mode.
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公开(公告)号：US09306456B2
公开(公告)日：2016-04-05
申请号：US14059650
申请日：2013-10-22
申请人： Dell Products L.P.
发明人： Kejiu Zhang , Shiguo Luo , Hang Li
CPC分类号： H02J1/00 , G06F1/28 , H02M1/38 , H02M3/158 , H02M3/1584
摘要： A voltage regulator may comprise a high-side switch and a low-side switch for delivering electrical current to the at least one information handling resource, a high-side driver configured to drive a high-side driving voltage for regulating a first electrical current of the high-side switch, a low-side driver configured to drive a low-side driving voltage for regulating a second electrical current of the low-side switch, and a control circuit configured to operate the at least one voltage regulator in both of a fixed dead time mode and an adaptive dead time mode.
摘要翻译： 电压调节器可以包括用于将电流传送到至少一个信息处理资源的高侧开关和低侧开关，配置成驱动用于调节第一电流的高侧驱动电压的高侧驱动器 高侧开关，低侧驱动器，被配置为驱动用于调节低侧开关的第二电流的低侧驱动电压;以及控制电路，被配置为在所述低侧开关中操作所述至少一个电压调节器， 固定死区模式和自适应死区模式。
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8.发明授权公开(公告)号：US10423210B2
公开(公告)日：2019-09-24
申请号：US15627193
申请日：2017-06-19
申请人： DELL PRODUCTS, L.P.
发明人： Shiguo Luo , Kejiu Zhang , Ralph H. Johnson
IPC分类号： G06F1/3206 , G05B15/02 , G06F13/40 , G06F1/3296 , G06F1/3287
摘要： A multiphase voltage regulator (VR) has a VR controller that performs automatic VR phase assignment and configuration for single or multi-output rails of an Information Handling System (IHS). VR power circuit has power stages selectably coupled to output voltage connection(s) or rail(s) that deliver electrical energy to information handling resource(s). VR controller is coupled to the VR power circuit and provides a first reference voltage (IREF) signal to the VR power circuit. VR controller identifies any power stages that return a load current monitor (IMON) signal that indicates that the respective power stage is coupled to the first IREF signal. VR controller regulates identified power stages of the VR power circuit during delivery of electrical power to information handling resource(s). Regulation is according to a VR configuration that is selected based on identified VR phases assigned to a first output voltage loop and associated with the first IREF signal.
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9.发明申请公开(公告)号：US20180309366A1
公开(公告)日：2018-10-25
申请号：US15491561
申请日：2017-04-19
申请人： Dell Products L.P.
发明人： Kejiu Zhang , Shiguo Luo , Ralph H. Johnson
摘要： Systems and methods for adaptive modulation of MOSFET driver key parameters for improved voltage regulator efficiency and reliability in a voltage regulator may include a power stage. The power stage may include a high side switch including a high side gate, a peak voltage detection circuit, and a high side driver strength modulator circuit. The high side driver strength modulator circuit may determine a high side driver strength level. The high side driver strength modulator circuit may also connect a subset of the set of high side gate drivers to the high side gate based on the high side driver strength level. The high side driver strength modulator circuit may also disconnect a remaining subset of the set of high side gate drivers from the high side gate.
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公开(公告)号：US10020736B2
公开(公告)日：2018-07-10
申请号：US14841669
申请日：2015-08-31
申请人： DELL PRODUCTS, L.P.
发明人： Feng-Yu Wu , Tsai-Fu Hung , Shin-Chen Wang , Shiguo Luo , Kejiu Zhang
CPC分类号： H02M3/1584 , G06F1/26 , H02M2001/0009 , H02M2003/1586
摘要： A method and an information handling system (IHS) perform current calibration of a multi-phase voltage regulator (VR) by using a calibrated operating phase to calibrate an unknown operating phase. A calibration controller, using a pulse width modulation (PWM) controller, enables a first unknown operating phase within a first converter sub-circuit in the multiphase VR. The calibration controller enables a calibrated circuit component electronically coupled to the first unknown operating phase. The calibration controller determines a target voltage for the first unknown operating phase based on sense component specifications. The calibration controller determines, for the first unknown operating phase, a sense voltage that identifies the first unknown operating phase as a first evaluated operating phase. The calibration controller performs calibration of operating phases of the multi-phase VR, including the first evaluated operating phase, based on a respective difference between a sense voltage and a corresponding target voltage for each operating phase.
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