公开(公告)号：US10338669B2

公开(公告)日：2019-07-02

申请号：US14924644

申请日：2015-10-27

Applicant: DELL PRODUCTS, L.P.

Inventor： Shiguo Luo ,  Kejiu Zhang ,  Feng-Yu Wu

IPC: G06F1/32 ,  G06F1/20 ,  G06F1/3296 ,  G06F1/3206

Abstract: An information handling system (IHS) includes temperature-compensated power control by a voltage regulation (VR) module to: (i) receive a monitored current (Imon) value from a current sensor integrated into the VR module; (ii) receive a temperature value from the temperature sensor also integrated into the VR module; (iii) determine a temperature-compensated Imon value based at least in part on the Imon value, the temperature value, and an empirically-derived temperature coefficient defined at the Imon value and the temperature value; and (iv) control the voltage-regulated power at least in part based on the temperature-compensated Imon value. The empirically-derived temperature coefficient adjusts for nonlinear portions of temperature coupling relationship between a portion of an integrated circuit (IC) die that can include the current sensor and the temperature sensor and a temperature experienced by by active portion of VR module.

公开(公告)号：US10229027B2

公开(公告)日：2019-03-12

申请号：US15130643

申请日：2016-04-15

Applicant: Dell Products L.P.

Inventor： Shiguo Luo ,  Ralph Johnson

IPC: G06F11/30 ,  G06F1/26 ,  G06F1/28 ,  G06F1/30 ,  G05F5/00

Abstract: A voltage regulator power reporting offset system includes a monitored power reporting subsystem that determines a monitored power level, offsets the monitored power level using voltage regulator operation offset information to provide a first offset monitored power level, and reports the first offset monitored power level to voltage regulator operation components. A processor power reporting component receives the report of the first offset monitored power level from the monitored power reporting subsystem. A processor power reporting offset subsystem receives the report of the first offset monitored power level from the processor power reporting component, offsets the first offset monitored power level using the processor operation offset information to provide a second offset monitored power level that is different than the first offset monitored power level, and reports the second offset monitored power level to a processing system.

公开(公告)号：US10116212B2

公开(公告)日：2018-10-30

申请号：US15457906

申请日：2017-03-13

Applicant: DELL PRODUCTS, L.P.

Inventor： Shiguo Luo ,  Kejiu Zhang ,  Ralph H. Johnson

IPC: G05F3/02 ,  H03K3/012 ,  H02M3/158 ,  H02M1/088 ,  G06F1/26 ,  H02M1/00

Abstract: A direct current (DC) power supply system performs a method of delivering electrical energy by a synchronous buck voltage regulator (VR) coupled to an information handling resource of an information handling system by switching between a high side (HS) control switch and a low side (LS) synchronous switch to regulate a direct current (DC) output voltage (VOUT) generated from an input voltage (VIN). Inductor current (IMON) values of the voltage regulator are measured during LS synchronous switch ON state. IMON values of the voltage regulator are synthesized during HS power switch ON state. A complete inductor current signal is generated that combines the measured and synthesized IMON values.

公开(公告)号：US10108252B2

公开(公告)日：2018-10-23

申请号：US15060312

申请日：2016-03-03

Applicant: Dell Products L.P.

Inventor： Kejiu Zhang ,  Shiguo Luo ,  Ralph H. Johnson, III ,  Hang Li

IPC: G06F1/26 ,  G06F1/32

Abstract: A voltage regulator for delivering power to a processor subsystem within an information handling system is disclosed. The voltage regulator includes an interface to an embedded controller for receiving a linear load line impedance and an intelligent load line controller. The intelligent load line controller may enable linear load line control, determine that a nonlinear load line condition is satisfied, and enable nonlinear load line control based on the determination that the nonlinear load line condition is satisfied.

公开(公告)号：US09621047B2

公开(公告)日：2017-04-11

申请号：US14512069

申请日：2014-10-10

Applicant: Dell Products L.P.

Inventor： Ralph J. Johnson, III ,  Shiguo Luo ,  Wayne Kenneth Cook ,  Mehran Mirjafari ,  Hang Li ,  Kejiu Zhang ,  Lei Wang

IPC: G05F1/56 ,  H02M3/28 ,  H02M1/00

CPC classification number: H02M3/285 ,  G01R19/0092 ,  H02M2001/0009 ,  H02M2001/007

Abstract: In accordance with embodiments of the present disclosure, a power supply unit may include one or more stages including an output stage configured to generate a direct-current output voltage at an output of the power supply, an OR-ing metal-oxide-semiconductor field effect transistor (MOSFET) coupled between the output stage and the output, and a controller. The controller may be configured to measure a signal indicative of a voltage associated with the OR-ing MOSFET and determine an estimated output current of the power supply based on the signal.

公开(公告)号：US20170063239A1

公开(公告)日：2017-03-02

申请号：US14841669

申请日：2015-08-31

Applicant: DELL PRODUCTS, L.P.

Inventor： Feng-Yu WU ,  Tsai-Fu Hung ,  Shin-Chen Wang ,  Shiguo Luo ,  Kejiu Zhang

IPC: H02M3/158

CPC classification number: H02M3/1584 ,  G06F1/26 ,  H02M2001/0009 ,  H02M2003/1586

Abstract: 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.

Abstract translation: 方法和信息处理系统（IHS）通过使用经校准的操作阶段来校准未知的操作阶段来执行多相电压调节器（VR）的当前校准。 使用脉冲宽度调制（PWM）控制器的校准控制器使多相VR中的第一转换器子电路内的第一未知操作相位能够实现。 校准控制器使得能够电连接到第一未知操作阶段的经校准的电路部件。 校准控制器基于感测部件规格确定用于第一未知操作阶段的目标电压。 校准控制器在第一未知操作阶段确定将第一未知操作阶段识别为第一评估操作阶段的感测电压。 基于每个操作阶段的感测电压和相应的目标电压之间的相应差异，校准控制器执行包括第一评估的操作阶段的多相VR的操作阶段的校准。

公开(公告)号：US09467052B2

公开(公告)日：2016-10-11

申请号：US14580418

申请日：2014-12-23

Applicant: DELL PRODUCTS, L.P.

Inventor： Kejiu Zhang ,  Shiguo Luo ,  Lisa Li

IPC: H02M1/088 ,  H02M1/36 ,  H02M3/158

CPC classification number: H02M3/158 ,  H02M1/32 ,  H02M3/1588 ,  H02M2001/0009 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

Abstract: A switching DC-DC voltage regulator (VR) provides for light and sinking loads by compute components of an information handling system (IHS). A controller detects a load current value and a voltage output value of a synchronous Buck VR. In response to detecting that the load current value is less than a threshold value, the controller drives a high side control switch (HS) and low side synchronous switch (LS) to regulate an output voltage value across a capacitor by causing an inductor current ripple through an inductor of the synchronous Buck VR in discontinuous conduction mode (DCM) to reduce power consumption during a light load. In response to detecting an electrical characteristic indicative of a voltage overshoot of the output voltage, the controller drives the HS and LS to cause the synchronous Buck VR to perform forced continuous conduction mode (FCCM) to sink the load current each switching cycle.

公开(公告)号：US20160105101A1

公开(公告)日：2016-04-14

申请号：US14512069

申请日：2014-10-10

Applicant: Dell Products L.P.

Inventor： Ralph J. Johnson, III ,  Shiguo Luo ,  Wayne Kenneth Cook ,  Mehran Mirjafari ,  Hang Li ,  Kejiu Zhang ,  Lei Wang

IPC: H02M3/156 ,  H02M1/42

CPC classification number: H02M3/285 ,  G01R19/0092 ,  H02M2001/0009 ,  H02M2001/007

Abstract: In accordance with embodiments of the present disclosure, a power supply unit may include one or more stages including an output stage configured to generate a direct-current output voltage at an output of the power supply, an OR-ing metal-oxide-semiconductor field effect transistor (MOSFET) coupled between the output stage and the output, and a controller. The controller may be configured to measure a signal indicative of a voltage associated with the OR-ing MOSFET and determine an estimated output current of the power supply based on the signal.

Abstract translation: 根据本公开的实施例，电源单元可以包括一个或多个级，包括被配置为在电源的输出处产生直流输出电压的输出级，OR形式的金属氧化物半导体场 耦合在输出级和输出之间的效应晶体管（MOSFET）和控制器。 控制器可以被配置为测量指示与OR值MOSFET相关联的电压的信号，并且基于该信号确定电源的估计输出电流。