Switching regulator for dynamically changing output voltage and power supply circuit including the switching regulator
AssigneeSamsung Electronics Co., Ltd.
InventorsDong-su KIM, Jong-beom Baek
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Abstract
A switching regulator configured to generate an output voltage based on an input voltage is provided. The switching regulator includes: an inductor; and a capacitor circuit configured to generate the output voltage by charging an inductor current passing through the inductor from the input voltage, provide a first capacitance as a load capacitance based on the output voltage being a first level or a second level, and provide a second capacitance, which is less than the first capacitance, as the load capacitance based on the output voltage being between the first level to the second level.
Claims22
A switching regulator configured to generate an output voltage based on an input voltage, the switching regulator comprising:
- an inductor;
- and
- a capacitor circuit configured to generate the output voltage by charging an inductor current passing through the inductor from the input voltage, provide a first capacitance as a load capacitance based on the output voltage being a first level, provide the first capacitance as the load capacitance based on the output voltage being a second level, and provide a second capacitance, which is less than the first capacitance, as the load capacitance based on the output voltage being between the first level and the second level.
(canceled)
A switching regulator configured to generate an output voltage based on an input voltage, the switching regulator comprising:
- an inductor;
- and
- a capacitor circuit configured to provide a load capacitance, generate the output voltage by charging an inductor current passing through the inductor from the input voltage, and rapidly change the load capacitance from a first capacitance to a second capacitance that is less than the first capacitance and gradually change the load capacitance from the second capacitance to the first capacitance based on the output voltage.
A power supply circuit configured to generate a supply voltage based on an input voltage, the power supply circuit comprising:
- a first voltage regulator configured to generate a first output voltage based on the input voltage and a reference voltage;
- a switch configured to change a load capacitance between a ground voltage and the first output voltage based on a control signal;
- and
- a power controller configured to generate the reference voltage to control the first voltage regulator to change the first output voltage according to a load condition and generate the control signal to control the switch to maintain the load capacitance at a first capacitance based on the first output voltage being constant and maintain the load capacitance at a second capacitance that is less than the first capacitance based on the first output voltage changing.
22-28. (canceled)
Dependencies are inferred from the claim text.