Dell Products Inc.

Chi Che Wu

Wei Cheng Yu

Tsung-Cheng Liao

Geroncio Ong Tan

Andrew Thomas Sultenfuss

Merle Wood, Iii

Wei-Cheng Jason Yu

Merle Jackson Wood

Yung-Chang Chang

Wen-Yung Chang

Chin-Jui Liu

Yong-Teng Lin

Ya-Tang Hsieh

Jui-Chin Fang

Chung-Cheng Liao

Described are computer implemented methods, a system and a power supply amplifier (PSA) that supports compliance testing of the PSA. The power supplies power to a powered device/information handling system. A voltage of synchronous rectifier (SR) gate is measured and compared to a calculated sense voltage at a sense resistor of the PSA. If the sense voltage is zero, received current of the PSA bypasses a first blocking MOSFET and a second blocking MOSFET for over voltage protection. If the sense voltage is not zero, the received current passes through the first blocking MOSFET.

Device and method for compliance testing of power supply adapters of information handling systems

A method and system for supplying power at a voltage selected from a plurality of voltages. Power is initially received at a first voltage. Embodiments communicate with an AC adapter to get device identification and see if the AC adapter supports other voltages. If so, embodiments communicate with the AC adapter to get more information about the adapter and identify what voltages the adapter is capable of providing. If one of the voltages would allow an information handling system to operate more efficiently, embodiments negotiate a power supply contract to operate at a second voltage. When the information handling system powers down, the system resets to operation at the initial voltage.

System and method for selecting a voltage on a barrel adapter interface

In one or more embodiments, one or more systems, one or more methods, and/or one or more processes may: send, by a battery management unit (BMU) of a battery of an information handling system (IHS), a request for a first amount of current to an embedded controller (EC) of the IHS; provide, by the EC, the request for the first amount of current to a charger of the IHS; receive, by the charger, the request; provide, by the charger, a second amount of current based at least on the request and based at least on a voltage measurement across a resistor of the charger; determine, by the BMU, a measurement of the second amount of current; provide, by the BMU, the measurement to the EC; determine, by the EC, that the measurement does not match the first amount of current; and provide, by the EC, an alert.

System and method of determining an issue associated with a power distribution system of an information handling system

The present disclosure provides embodiments of direct current (DC) power connectors and methods to manufacture the same. More specifically, the present disclosure provides a connector plug with improved power capacity and structural rigidity. The connector plug includes an inner body and an outer body coupled to transmit power through the DC power connector, wherein the inner body is concentrically arranged within the outer body, and an insulating barrel that is coupled between the inner body and the outer body to electrically isolate the inner body from the outer body. The inner body and outer body comprise a base metal or metal alloy having an electrical conductivity ranging between 30% International Annealed Copper Standard (IACS) and greater than or equal to 99% IACS. In addition, the inner body, outer body and insulating barrel comprise an inter-locking feature, which increases the structural rigidity of the connector plug and prevents disassembly when the inner body, outer body and insulated barrel are assembled together.

DC power connector plug with improved power and rigidity

The present disclosure provides various embodiments of an external power supply and methods to enhance the output power delivered by an external power supply to a power consuming load. As described in more detail below, the embodiments disclosed herein enable an external power supply to deliver a higher than maximum output power for short periods of time when ambient temperatures within the external power supply are low. As the ambient temperature increases, the embodiments disclosed herein throttle (or incrementally reduce) the output power delivered by the external power supply until the maximum output power specified for the power supply is reached. Although not strictly limited to such, the external power supply may be a Universal Serial Bus (USB)-enabled AC/DC adapter, and more specifically, a USB Power Deliver (USB-PD) AC/DC adapter, in some embodiments.

External power supply and method to enhance the output power delivered by an external power supply

A disclosed method for LED control for a detachable reversable power cable includes detecting, at a power source, that a first connector at a first end of the power cable is connected to the power source, triggering, at the power source, a first pulse on a first wire of the power cable that turns off a first LED switch coupled to a first LED on the first connector, disabling the first LED, and triggering, at the power source, a second pulse on a second wire of the power cable that drives a second LED on a second connector at a second end of the power cable opposite the first end, the second LED being coupled to a second LED switch that is on. The method further includes, responsive to detecting that the second connector is connected to a power sink, modifying a driver path for the second LED.

LED control for reversable power cable

Systems and methods are provided to implement power supply units (PSUs) that are capable of operating on input power having different types of input voltage waveforms, including, but not limited to, pure sinusoidal waveforms, non-pure sinusoidal waveforms, and non-sinusoidal waveforms. Such a PSU may operate to continue supplying DC output power to a system load as long as the PSU is powered by any one of a variety of such different input power types, while at the same time also effectively monitoring for presence of input power provided to the PSU and shutting down the PSU in event of absence or termination of the input power to the PSU. Such a PSU may also automatically identify and adapt to changes between different types of input power while at the same time continuing to supply DC output power to a system load in an uninterrupted manner for as long as some type of input power is being provided to the PSU.

System and method for detecting the presence of input power of different types

A power supply unit for an information handling system, including a filter module configured to filter an AC voltage signal; a rectifier module to rectify the filtered AC voltage signal to generate a DC voltage signal, the DC voltage signal proportional to the AC voltage signal; a voltage regulator module configured to determine that the DC voltage signal is above a threshold voltage level, and in response, clamp the DC voltage signal such that the clamped DC voltage signal i) is not proportional to the AC voltage signal and ii) is less than the threshold voltage level; a capacitor module to average peaks voltages of the clamped DC voltage signal; and a DC/DC converter to convert the averaged DC voltage signal to a converted DC voltage signal, the converted DC voltage signal having a desired DC voltage level.

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Taipei, Taiwan

Chi Che Wu