Dell Products Inc.

Abey K Mathew

John J Breen

Stuart Allen Berke

Johan Rahardjo

George Gilman Richards, Iii

Fu-Sheng Tsai

Timothy Michael Lambert

John Erven Jenne

Shiguo Luo

Mark A Muccini

Guangyong Zhu

Ralph H Johnson

Wayne Kenneth Cook

Padmanabh R Gharpure

Constantin Darius Livescu

In accordance with embodiments of the present disclosure, an information handling system may include an information handling resource, a voltage regulator, a non-transitory computer-readable medium, and a controller. The voltage regulator may be coupled to the information handling resource and configured to deliver electrical energy to the information handling resource. The a non-transitory computer-readable medium may have stored thereon curve fit information, the curve fit information including coefficients of a polynomial for approximating a parameter indicative of the power efficiency of the voltage regulator as a function of a measured output current of the voltage regulator. The controller may be coupled to the voltage regulator and configured to receive information indicative of an output power of the voltage regulator and, based on the information indicative of an output power of the voltage regulator and the curve fit information, calculate an input current of the voltage regulator.

Systems and methods for measurement of input current of voltage regulator

A voltage regulator circuit comprises a plurality of voltage regulator phases, a first load output coupled to the plurality of voltage regulator phases for providing a first output voltage, a first coupling inductor having a first winding and a second winding, the first winding coupled in series between a first voltage regulator phase of the plurality of voltage regulator phases and the first load output, a second load output coupled to the second winding for providing a second output voltage, and a first switch coupled in series with the second winding. A method comprises detecting a startup event; determining an installed processor type; retrieving a configuration parameter value; providing a first output voltage at a first load output; providing, at a second load output coupled to the second winding, a second output voltage; and controlling a first duty cycle of a first switch coupled in series with the second winding.

Configurable multi-rail voltage regulation with coupled inductor power steering

In response to a condition not being met, asserting a control input of a driver to close a low side switch in a phase leg of a multiphase voltage regulator using coupled inductors, de-asserting the control input in response to a signal to close a high side switch of the phase leg, and asserting the control input in response to a signal to open the high side switch; and in response to the condition not being met, de-asserting the control input, asserting the control input in response to a signal to close a high side switch of another phase leg, and de-asserting the control input in response to a signal to open the high side switch of the other phase leg and to the current in the phase leg being less than a threshold.

Multiphase voltage regulator using coupled inductors

Systems and methods are disclosed that may be employed to calibrate current sense circuitry of CPU core voltage (Vcore) DC/DC voltage regulation circuitry by coupling an individual Vcore phase of a VR as a current source to a VSA phase of the same VR so that the Vcore phase acts as a current sink for the coupled Vcore phase during calibration of the current sense circuitry of the individual Vcore phase.

Systems and methods of current sense calibration for voltage regulator circuits

A method may include, when a management controller is able to control a plurality of power supply units (PSUs): selecting a PSU of the plurality of PSUs as a master of a current share bus; driving, by the PSU selected as the master, a current share signal on the current share bus; and monitoring, by PSUs other than the power supply unit selected as the master, the current share signal. The method may also include, when the management controller is unable to control the plurality of PSUs: attempting, by each of the plurality of PSUs, to drive the current share signal on the current share bus; and monitoring, by each of the PSUs, the current share signal. Each of the PSUs may output current to the power bus in accordance with the current share signal.

Systems and methods for management controller enhanced power supply unit current sharing

An information handling system (IHS) automatically responds to a change in cooling medium that cools functional components. A cooling medium sensor senses a material characteristic of the cooling medium. A thermal management controller determines whether the material characteristic received from the cooling medium sensor is in one of a first range that is associated with the air cooling medium and a second range that is associated with the liquid cooling medium. In response to determining that the material characteristic is within the second range, the thermal management controller disables a thermal mitigation component that reduces a temperature of the functional components of the IHS.

Methodology for electronic equipment to self-identify submersion in mineral oil

A voltage regulator calibrator analyzes voltage regulator output and compares the output with known electrical loads. The calibrator selects a known electrical load, applies the known electrical load to a voltage regulator, receives from the voltage regulator measured output power characteristics of the voltage regulator, compares the known electrical load with the measured output power characteristics, and generates a voltage regulator adjustment value based on the compared values. Embodiments of the present disclosure also include a method for calibrating, the method including selecting a known electrical load, applying the known electrical load to a voltage regulator, receiving measured output power characteristics of the voltage regulator, comparing the known electrical load with the measured output power characteristics, and generating a voltage regulator adjustment value based on the compared values.

Calibration of voltage regulator

A method may include, in an information handling system comprising a power system having a plurality of voltage regulator phases, during a configuration mode of the power system, determining connectivity between the plurality of voltage regulator phases and a primary power rail and connectivity between the plurality of voltage regulator phases and a secondary power rail based on population of output inductors in one or more of a plurality of first phase output inductor footprint locations or one or more of a plurality of second phase output inductor footprint locations, wherein each of the plurality of phase output inductor footprint locations is respectively coupled to an first output of a respective voltage regulator phase of the plurality of voltage regulator phases and is coupled to a respective power rail of the information handling system.

Systems and methods for automatic detection and configuration of voltage regulator phases in a multi-rail voltage regulator

A method may include causing a first test current to be delivered for a period of time from a phase of a voltage regulator to a load coupled to the voltage regulator, the phase configured to deliver electrical energy to the load. The method may also include measuring a first measured output current associated with the first test current. The method may further include causing a second test current to be delivered from the phase to the load for the period of time, the second test current differing from the first test current by a known offset. The method may additionally include measuring a second measured output current associated with the second test current. The method may also include calculating the respective gain and the respective offset of the phase based on the first measured output current, the second measured output current, the period of time, and the known offset.

Systems and methods for self-calibration of a voltage regulator

A method of power flow mapping in a datacenter includes encoding, by a power supply unit of the datacenter, identification information that uniquely identifies the power supply unit, and modulating the encoded identification information onto a power cable, wherein the power supply unit receives operating power via the power cable. Modulating the encoded information onto the power cable further includes changing a voltage internal to the power supply unit to create a current change in the power cable.

System and method for power flow mapping in a datacenter

Systems and methods are provided that may be implemented to dynamically manage voltage regulator switching frequency. In one embodiment, the disclosed systems and methods may be implemented to dynamically find the optimal voltage regulator switching frequency based on the load current (I) and efficiency in a switching voltage regulator device (VR), such as a voltage regulator down device (VRD) that is embedded on a system board of an information handling system.

Systems and methods for dynamic management of switching frequency for voltage regulation

Systems and methods may be implemented in a power device subsystem topology to provide an arbitration and communication scheme between a single consolidated non-volatile random access (NVRAM) memory device and multiple discrete digital power controller devices in a manner that provides data protection and the ability to update the full NVRAM content when needed.

Shared non-volatile storage for digital power control

Systems and methods for intelligently optimizing voltage regulation efficiency for information handling systems by varying gate drive voltage value based on measured operating efficiency and/or other voltage regulation operating parameters. Different voltage regulation operating parameters may be dynamically monitored and recorded during a power conversion process, and these operating parameters may then be used to dynamically and variably control gate drive voltage level to improve/optimize voltage regulation operating efficiency performance.

Growing community of inventors

Georgetown, TX, United States of America

Abey K Mathew