System and method for dynamically identifying a power adaptor power rating based on operating conditions

Patent metadata

Field	Value
Publication number	US-2020225721-A1
Application number	US-201916248318-A
Country	US
Kind code	A1
Filing date	Jan 15, 2019
Priority date	Jan 15, 2019
Publication date	Jul 16, 2020
Grant date	—

Abstract

A power adaptor system may comprise a power source supplying input voltage according to a dynamic power rating to an operably connected host information handling system, a power source identification (PSID) module of the power adaptor receiving an adjustable setting voltage from the power source via a setting voltage port of the PSID module, and a controller of the PSID module executing code instructions to select the dynamic power rating for the power source based on a measurement of the adjustable setting voltage indicating an operating condition of the power adaptor or based on an indication of an operating condition the operably connected host information handling system, wherein the dynamic power rating is one of a plurality of dynamic power ratings in including an adjustable range of power levels at each dynamic power rating at which the power source is capable of operating.

First claim

What is claimed is:

1 . A power adaptor system comprising:
a power source supplying input voltage according to a dynamic power rating to an operably connected host information handling system; a power source identification (PSID) module of the power adaptor receiving an adjustable setting voltage from the power source via a setting voltage port of the PSID module; and a controller of the PSID module executing code instructions to:
select the dynamic power rating for the power source based on a measurement of the adjustable setting voltage indicating an operating condition of the power adaptor or based on an indication of an operating condition the operably connected host information handling system,
wherein the dynamic power rating is one of a plurality of dynamic power ratings in including an adjustable range of power levels at each dynamic power rating at which the power source is capable of operating.

2 . The power adaptor system of claim 1 , wherein the operating condition of the power adaptor that forms the basis of the selection of the power rating for the power source is a measured temperature of an internal component of the power adaptor.

3 . The power adaptor system of claim 1 further comprising:
a thermal sensor measuring a temperature of an internal component of the power adaptor and adjusting, via an electronic switch, the adjustable setting voltage based on the temperature of the internal component, wherein the temperature of the internal component is the operating condition of the power adaptor that forms the basis of the selection of the dynamic power rating.

4 . The power adaptor system of claim 3 , wherein the temperature sensor is a thermistor.

5 . The power adaptor system of claim 1 further comprising:
the controller determining the operating condition of the operably connected host information handling system based on receipt of an override signal from the operably connected host information handling system, wherein the controller receives the override signal when the host information handling system has been receiving the input voltage at a peak power level within the adjustable range of power levels of selected dynamic power rating for a preset maximum duration of time; and
the controller selecting a default power level from the adjustable range of power levels of the selected dynamic power rating.

6 . The power adaptor system of claim 1 further comprising:
the controller transmitting a reset instruction to the operably connected host information handling system upon a startup event of the host information handling system;
the controller determining the operating condition of the operably connected host information handling system is capable of accepting peak power at startup based on receipt of a reply to the reset instruction from the operably connected host information handling system;
the controller selecting a peak power level from the adjustable range of power levels of the selected dynamic power rating.

7 . The power adaptor system of claim 1 further comprising:
a light emitting diode of the power adaptor receiving current from a power source and emitting light;
a fault detection circuit of the PSID module determining a fault condition has occurred; and
the fault detection circuit interrupting the flow of current to the light emitting diode such that the light emitting diode discontinues emitting light via an electronic switch upon detection of the fault condition.

8 . A method of determining a dynamic power source identification (PSID) for a power adapter comprising:
supplying input voltage according to a dynamic power rating to an operably connected host information handling system; measuring an adjustable setting voltage at a setting voltage pin of a PSID module, wherein the value of the setting voltage is dependent upon a measured internal temperature of a power adaptor component to electronically switch a voltage divider of a power source voltage to set the setting voltage; identifying, via a controller, the dynamic power rating for the power adapter based on a measurement of the adjustable setting voltage, or identifying the dynamic power rating based on an operating condition of the operably connected host information handling system, wherein the dynamic power rating is one of a plurality of power ratings each with an adjustable range of power levels at which the power adapter is capable of operating.

9 . The method of claim 8 further comprising:
controlling the setting voltage based on the temperature of the internal component via a combination of a thermal sensor controlled electronic switch to implement an adjustable voltage divider via a plurality of resistors.

10 . The method of claim 9 , wherein the electronic switch is a metal-oxide substrate field effect transistor (MOSFET).

11 . The method of claim 8 further comprising:
receiving an override signal from the host information handling system indicating that the host information handling system has been receiving the input voltage at a peak power level for a preset maximum duration of time as the operating condition of the operably connected host information handling system; and
selecting a default power level from the adjustable range of power levels of the identified dynamic power rating.

12 . The method of claim 8 further comprising:
transmitting a reset instruction to the operably connected host information handling system, via the controller, upon a startup event of the host information handling system;
determining the capability of accepting peak power at startup as the operating condition of the operably connected host information handling system based on a receipt of a reply to the reset instruction from the operably connected host information handling system; and
selecting a peak power level from the adjustable range of power levels of the identified dynamic power rating.

13 . The method of claim 8 further comprising:
transmitting a reset instruction to the operably connected host information handling system, via the controller, upon a startup event of the host information handling system; and
determining the capability of accepting peak power at startup as the operating condition of the operably connected host information handling system based on a lack of receipt of a reply to the reset instruction from the operably connected host information handling system; and
selecting a default power from the adjustable range of power levels of the identified dynamic power rating.

14 . The method of claim 8 further comprising:
emitting light from a light emitting diode receiving current from the power source voltage;
determining a fault condition has occurred via a fault detection circuit of the PSID module; and
interrupting the flow of current to the light emitting diode, via the fault detection circuit pulling a fault pin low, such that the light emitting diode discontinues emitting light.

15 . A power adaptor system comprising:
a power adapter supplying input voltage according to a dynamic power rating to an operably connected host information handling system selected from a plurality of dynamic power ratings available at which the power adapter is capable of operating; a controller executing a power source identification (PSID) module of the power adaptor receiving an adjustable setting voltage from a power source voltage divided via a setting voltage input to a setting voltage port of the PSID module; a light emitting diode of the power adaptor receiving current from the power source and adapted to emit light during operation; the controll

Assignees

• Dell Products Lp

Inventors

• Yu Wei-Cheng
• Liao Tsung-Cheng
• Liang Tun-Chieh
• Chang Wen-Yung
• Wu Chi-Che

Classifications

• G06F1/30

  Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations (for resetting only G06F1/24) · CPC title

• G06F1/28

  Supervision thereof, e.g. detecting power-supply failure by out of limits supervision · CPC title

• G06F1/26 Primary

  Power supply means, e.g. regulation thereof (for memories G11C) · CPC title