Intelligent control of a power supply system of an information handling system
A system, method, and non-transitory computer-readable medium are disclosed for intelligently controlling a power supply system of an information handling system. At least one embodiment is directed to a method that includes receiving power from an adapter and providing the power from the adapter to a switching power supply. At least one embodiment of the method also includes controlling the plurality of power switching elements to provide system power to an information handling system through the switching power supply; detecting a light loading power condition of the information handling system. In response to detecting the light loading power condition, the switching power supply is deactivated and a bypass control module is activated. In at least one embodiment, activation of the bypass control module directs power from the adapter through the bypass control module to the information handling system as the system power.
1. A method comprising:
receiving power from an adapter;
providing the power from the adapter to a switching power supply having a switching network including a plurality of power switching elements;
controlling the plurality of power switching elements to provide system power to an information handling system through the switching power supply;
detecting a light loading power condition of the information handling system;
in response to detecting the light loading power condition of the information handling system,
deactivating the switching power supply, and
activating a bypass control module wherein
activation of the bypass control module directs power from the adapter through the bypass control module to the information handling system as the system power;
detecting the light loading power condition at an embedded controller of the information handling system;
activating a bypass control signal at an output of the embedded controller in response to the detection of the light loading power condition; and
receiving the bypass control signal at an input of the bypass control module to activate the bypass control module, wherein
activation of the bypass control module directs power from the adapter to the information handling system as the system power.
2. The method of claim 1 , further comprising:
deactivating the plurality of power switching elements in response to detection of the light loading power condition to thereby deactivate the switching power supply.
3. The method of claim 1 , further comprising:
controlling the switching of the plurality of switching elements of the switching network using a charger controller during operation of the switching power supply.
4. The method of claim 1 , further comprising:
detecting that the information handling system is no longer operating in the light loading power condition;
in response to detecting that the information handling system is no longer operating in the light loading power condition,
deactivating the bypass control module to direct power from the adapter to the switching network; and
controlling the plurality of power switching elements to activate the switching power supply to provide system power to the information handling system.
5. A method comprising:
receiving power from an adapter;
providing the power from the adapter to a switching power supply having a switching network including a plurality of power switching elements;
controlling the plurality of power switching elements to provide system power to an information handling system through the switching power supply;
detecting a light loading power condition of the information handling system;
in response to detecting the light loading power condition of the information handling system,
deactivating the switching power supply, and
activating a bypass control module wherein
activation of the bypass control module directs power from the adapter through the bypass control module to the information handling system as the system power;
controlling the plurality of power switching elements to provide system power to the information handling system using a charger controller when system power is provided by the switching power supply;
detecting the light loading power condition at an embedded controller of the information handling system;
using the embedded controller to communicate with the charger controller to instruct the charger controller to deactivate the switching power supply;
using the embedded controller to communicate with a power delivery device, wherein the power delivery device directs the adapter to adjust a voltage output of the adapter to a predetermined voltage level;
activating a bypass control signal at an output of the embedded controller in response to the detection of the light loading power condition; and
receiving the bypass control signal at an input of the bypass control module to activate the bypass control module, wherein
activation of the bypass control module directs power from the adapter to the information handling system as the system power.
6. The method of claim 5 , wherein
the embedded controller communicates with a power delivery device to direct the adapter to reduce the voltage output of the adapter to the predetermined voltage level.
7. The method of claim 5 , further comprising:
detecting that the information handling system is no longer operating in the light loading power condition;
deactivating the bypass control signal at the output of the embedded controller in response to detecting that the information handling system is no longer operating in the light loading power condition;
receiving the deactivated bypass control signal at the bypass control module to deactivate the bypass control module, wherein
deactivating the bypass control module inhibits power flow through the bypass control module, and
deactivating the bypass control module directs power from the adapter to the switching network;
using the embedded controller to direct the adapter to adjust the voltage output of the adapter to a further predetermined voltage level;
using the embedded controller to communicate with the charger controller to instruct the charger controller to control the plurality of switching elements of the switching network to provide system power to the information handling system from the switching power supply; and
controlling the plurality of power switching elements using the charger controller to provide system power to the information handling system through the switching power supply.
8. The method of claim 7 , wherein
the embedded controller communicates with a power delivery device to instruct the adapter to raise the voltage output of the adapter to the further predetermined voltage output level.
9. An information handling system comprising:
a power port configured for connection to an adapter;
a power supply system configured to receive power from the adapter through the power port, wherein
the power supply system is operable in a first mode of operation in which system power is provided to the information handling system by a switching power supply having a plurality of switching elements, and
the power supply system is operable in a second mode of operation in which the system power is provided to the information handling system by the adapter, wherein the switching power supply is deactivated in the second mode of operation; and
a power control system configured to operate the power supply system in the first mode of operation and the second mode of operation, wherein
the power control system operates the power supply system in the second mode of operation when the information handling system is in a light loading power condition, and
the power control system operates the power supply system in the first mode of operation when the information handling system exits the light loading power condition;
a charger controller configured to control the switching elements of the switching power supply to control power provided by the switching power supply when the power supply is operating in the first mode of operation;
a power delivery device configured for communication with the adapter; and
an embedded controller configured for communication with the charger controller, the bypass control module, and the power delivery device.
10. The system of claim 9 , wherein the power control system comprises:
a bypass control module configured to direct power from the adapter through the bypass control module for provision as system power to the information handling system when the power supply system is operating in the second mode of operation; and
the bypass control module is configured to direct power from the adapter to the switching elements of the switching power supply when the power supply system is operating in the first mode of operation.
11. The system of claim 10 , wherein
the bypass control module is configured to direct power from the adapter to the switching elements of the switching power supply by preventing power flow through the bypass control module in the first mode of operation.
12. The system of claim 9 , wherein the embedded controller is configured for:
detecting the light loading power condition of the information handling system; and
in response to detecting that the information handling system is in the light loading power condition,
instructing the charger controller to direct the switching elements of the switching power supply to an inactive state in response to the detection of the light loading power condition to thereby deactivate the switching power supply;
instructing the power delivery device to instruct the adapter to adjust a voltage output of the adapter to a predetermined voltage level; and
providing an active bypass control signal to the bypass control module in response to the detection of the light loading power condition, wherein the bypass control module is responsive to the active bypass control signal to direct power from the adapter through the bypass control module for provision as system power to the information handling system.
13. The system of claim 12 , wherein the embedded controller is further configured for:
detecting that the information handling system is no longer in the light loading power condition; and
in response to detecting that the information handling system is no longer in the light loading power condition,
instructing the power delivery device to direct the adapter to adjust the voltage output of the adapter to a predetermined voltage level,
deactivating the bypass control signal to the bypass control module, wherein the deactivation of the bypass control module directs power from the adapter to the switching elements of the switching power supply, and
instructing the charger controller to control the switching elements of the switching power supply to provide the system power to the information handling system.
14. The system of claim 10 , wherein
the switching power supply is a buck-boost switching power supply.
15. A non-transitory, computer-readable storage medium embodying computer program code, the computer program code comprising instructions executable by an embedded controller, the instructions being configured for:
directing a power supply system to operate in a first mode of operation in which system power is provided to an information handling system by a switching power supply having a plurality of switching elements, wherein power is provided to the plurality of switching elements from an adapter; and
detecting a light loading power condition of an information handling system;
in response to detecting the light loading power condition of the information handling system,
directing the power supply system to operate in a second mode of operation, wherein
the system power is provided to the information handling system by the adapter, and
the switching power supply is deactivated;
communicating with a charger controller of the switching power supply to direct operation of the charger controller in the first mode of operation and the second mode of operation, wherein
the charger controller is directed to provide power through the switching elements of the switching power supply in the first mode of operation of the power supply system, and
the charger controller is directed to deactivate the switching power supply in the second mode of operation.
16. The non-transitory, computer-readable storage medium of claim 15 , wherein the instructions are further configured for:
communicating with a power delivery device to direct the adapter to adjust a voltage output of the adapter, wherein
the adapter is directed to adjust the voltage output of the adapter to a first predetermined voltage level in the first mode of operation of the power supply system, and
the adapter is directed to adjust the voltage output of the adapter to a second predetermined voltage level in the second mode of operation of the power supply system, and
the first predetermined voltage level is greater than the second predetermined voltage level.
17. The non-transitory, computer-readable storage medium of claim 15 , wherein the instructions are further configured for:
generating a bypass control signal to a bypass control module, wherein
an activated state of the bypass control signal is generated in the second mode of operation, and
in response to receipt of the activated state of the bypass control signal,
the bypass control module is configured to direct power from the adapter through the bypass control module for provision as system power to the information handling system, and
a deactivated state of the bypass control signal is generated in the first mode of operation, in response to a deactivated state of the bypass control signal,
the bypass control module is configured to direct power from the adapter to the switching elements of the switching power supply.