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US 10,768,648 B2Granted
Power management device and electronic device including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsKyungsoo Lee, Junghun Heo
Life of this patent
Estimating the term…
Abstract
A power management device includes at least one switching regulator to generate a conversion voltage from an input voltage, a plurality of low drop-out regulators to generate a plurality of output voltages from the conversion voltage, and a controller to estimate drop-out voltages of the low drop-out regulators based on output currents of the low drop-out regulators and to dynamically control the conversion voltage based on the estimated drop-out voltages.
Claims11
A power management device, comprising:
- first and second switching regulators to respectively generate first and second conversion voltages from an input voltage;
- a plurality of low drop-out (LDO) regulators to generate a plurality of output voltages from the first and second conversion voltages;
- and
- a controller to estimate drop-out voltages of the LDO regulators based on output currents of the LDO regulators, generate a plurality of voltage control signals based on the estimated drop-out voltages, and respectively provide the plurality of voltage control signals to the first and second switching regulators in order to dynamically control the first and second conversion voltages.
1 more element
An electronic device, comprising:
- a power management device to provide a plurality of output voltages to drive a plurality of functional blocks based on an input voltage;
- and
- an application processor (AP) to determine an operation state of each of the functional blocks, generate a power control signal based on the operation state, and provide the generated power control signal to the power management device,
- wherein the power management device includes:
- first and second switching regulators to respectively generate first and second conversion voltages from the input voltage;
- a plurality of low drop-out (LDO) regulators to generate a plurality of output voltages from the first and second conversion voltages, the output voltages being provided to the functional blocks;
- a plurality of selectors respectively connected to the LDO regulators;
- a controller that receives the power control signal, the controller to control the first and second conversion voltages based on the power control signal;
- and
- a plurality of current detectors to detect output currents of the LDO regulators and to provide the detected output currents to the controller,
- the AP includes a power controller to estimate drop-out voltages of the LDO regulators based on the determined operation state of the each of the functional blocks receiving the output voltages from the LDO regulators, and to generate the power control signal, and
- the controller included in the power management device generates a plurality of selection control signals and respectively provides the selection control signals to the selectors to control connections between the first and second switching regulators and the LDO regulators.
9 more elements
Dependencies are inferred from the claim text.