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US 10,855,185 B2Granted
Semiconductor circuit including a DC-DC converter and a voltage regulator
AssigneeSamsung Electronics Co., Ltd.
InventorsKi Jae Song, Jong Woon Yoo
Life of this patent
Estimating the term…
Abstract
A semiconductor circuit includes a reference voltage generating circuit which generates a first reference voltage; a voltage control circuit which receives the first reference voltage from the reference voltage generating circuit to output a second reference voltage; a DC-DC conversion circuit which executes DC-DC conversion on the basis of the second reference voltage which is output from the voltage control circuit, and provides an output thereof to a first node; and a voltage regulator which executes voltage regulating on the basis of the first reference voltage which is output from the reference voltage generating circuit, and a voltage of the first node, and provides an output thereof to a second node.
Claims19
A semiconductor circuit comprising:
- a voltage control circuit configured to generate a second reference voltage by adding, to a first reference voltage, a dropout voltage corresponding to a difference between an input voltage and an output voltage;
- a DC-DC conversion circuit configured to perform DC-DC conversion based on the second reference voltage to generate the input voltage such that the dropout voltage corresponding to the difference between the input voltage and the output voltage is constantly maintained at a difference between the second reference voltage and the first reference voltage, and to provide the input voltage to a first node;
- and
- a voltage regulator configured to generate the output voltage by regulating the input voltage based on the first reference voltage and the input voltage;
- and
- a reference voltage generating circuit configured to generate a first reference voltage, and to separately provide the first reference voltage to both the voltage control circuit that generates the second reference voltage used to generate the input voltage and to the voltage regulator that regulates the input voltage to generate the output voltage.
3 more elements
A semiconductor circuit comprising:
- a reference voltage generating circuit configured to generate a first reference voltage;
- a DC-DC conversion circuit configured to perform DC-DC conversion based on a second reference voltage to generate an input voltage, and to provide the input voltage to a first node, the second reference voltage having a voltage level different from the first reference voltage;
- and
- a voltage regulator configured to generate an output voltage by regulating the input voltage based on the first reference voltage and the input voltage such that the reference voltage generating circuit separately provides the first reference voltage to both the DC-DC conversion circuit that generates the input voltage and to the voltage regulator that regulates the input voltage to generate the output voltage, and to provide the output voltage to a second node, wherein
- the semiconductor circuit is configured to maintain a constant difference between the input voltage output by the DC-DC conversion circuit and the output voltage output by the voltage regulator by varying the input voltage based on a difference between the second reference voltage and the first reference voltage such that the constant difference corresponds to the difference between the second reference voltage and the first reference voltage irrespective of variations in the input voltage due to fluctuations in the output voltage.
2 more elements
A semiconductor circuit comprising:
- a reference voltage generating circuit configured to generate a first reference voltage;
- a voltage control circuit configured to receive the first reference voltage from the reference voltage generating circuit, and to generate a second reference voltage based on at least the first reference voltage;
- a DC-DC conversion circuit configured to generate an input voltage, the input voltage being applied to a first node, the DC-DC conversion circuit including a first comparator, the first comparator having a non-inverting terminal and an inverting terminal, the non-inverting terminal configured to receive the second reference voltage and the inverting terminal configured to receive the input voltage applied to the first node;
- and
- a voltage regulator configured to generate an output voltage, the voltage regulator including a second comparator, the second comparator having an inverting terminal configured to receive the first reference voltage such that the reference voltage generating circuit separately provides the first reference voltage to both the voltage control circuit that generates the second reference voltage used to generate the input voltage and to the voltage regulator that regulates the input voltage to generate the output voltage, the output voltage being applied to a second node.
2 more elements
Dependencies are inferred from the claim text.