Power module and electronic device therewith
AssigneeSamsung Electronics Co., Ltd.
InventorsDongyeol Lee, Dongwook Suh, Wangsuk Sung
Life of this patent
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Abstract
Disclosed is a power module which includes a first power module that generates a first output current based on a first input voltage, a second power module that generates a second output voltage based on a second input voltage, generates a second output current based on the second output voltage, and generates the second output current when a level of the first input voltage is smaller than a level of a reference voltage, and a voltage controller that generates a feedback signal for regulating at least one of the level of the first input voltage and a level of the second input voltage based on current information about a current flowing in the power module.
Claims20
A power module comprising:
- a first power module configured to generate a first output current based on a first input voltage;
- a second power module configured to generate a second output voltage based on a second input voltage, to generate a second output current based on the second output voltage, and to generate the second output current when a level of the first input voltage is smaller than a level of a reference voltage;
- and
- a voltage controller configured to generate a feedback signal for regulating at least one of the level of the first input voltage and a level of the second input voltage based on current information about a current flowing in the power module.
A method of supplying power, the method comprising:
- generating a first output current based on a first input voltage;
- comparing a level of the first input voltage and a level of a reference voltage;
- generating a comparison signal based on a comparison result of comparing the level of the first input voltage and the level of the reference voltage;
- generating a result code corresponding to accumulated information of the comparison signal;
- generating a second output current based on the result code and a second input voltage;
- providing power to an external device based on the first output current and the second output current;
- sensing at least one of the first output current and the second output current to generate current information;
- generating a feedback signal for regulating a level of at least one of the first input voltage and the second input voltage based on the current information;
- and
- regulating and outputting the level of the at least one of the first input voltage and the second input voltage based on the feedback signal.
A display device comprising:
- a display panel configured to display an image;
- a power management integrated circuit configured to generate a first input voltage and a second input voltage;
- and
- a display driving circuit configured to generate gate signals on a plurality of gate lines and to generate data voltages on a plurality of data lines,
- wherein the display driving circuit includes:
- a power module configured to provide a power necessary for the display panel based on at least one of the first input voltage and the second input voltage,
- wherein the power module is configured to:
- generate a first current based on the first input voltage;
- when a drop of the first input voltage occurs, generate a second current based on the first input voltage and a second input voltage;
- and
- monitor the first current and the second current to generate a feedback signal for regulating a level of at least one of the first input voltage and the second input voltage based on at least one of the first current and the second current.
Dependencies are inferred from the claim text.