Voltage converter, method of voltage conversion using the same and display apparatus including the same
AssigneeSamsung Display Co., Ltd.
InventorsKWANGHUN KANG, SUNGCHUN PARK
Life of this patent
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Abstract
A voltage converter includes a first switching element, a second switching element, and a forced maintaining circuit. The first switching element is configured to operate based on a switching control signal. The second switching element is connected to the first switching element. The second switching element is configured to operate based on the switching control signal in a synchronous mode and operate in a diode mode in an asynchronous mode. The forced maintaining circuit is connected to the second switching element and configured to maintain the asynchronous mode for a forced maintaining period after entering the asynchronous mode.
Claims20
A voltage converter comprising:
- a first switching element configured to operate based on a switching control signal;
- a second switching element connected to the first switching element, wherein the second switching element is configured to operate based on the switching control signal in a synchronous mode, and the second switching element is further configured to operate in a diode mode in an asynchronous mode;
- and
- a forced maintaining circuit connected to the second switching element and configured to maintain the asynchronous mode for a forced maintaining period after entering the asynchronous mode.
A method of voltage conversion, the method comprising:
- operating a first switching element based on a switching control signal;
- in a synchronous mode, operating a second switching element based on the switching control signal;
- in an asynchronous mode, operating the second switching element in a diode mode by turning off the second switching element;
- and
- maintaining the asynchronous mode for a forced maintaining period after entering the asynchronous mode using a forced maintaining circuit that is connected to the second switching element.
A display apparatus comprising:
- a display panel comprising a plurality of gate lines, a plurality of data lines, and a plurality of pixels connected to the plurality of gate lines and the plurality of data lines;
- a gate driver configured to output a gate signal to the plurality of gate lines;
- a data driver configured to output a data voltage to the plurality of data lines;
- and
- a power voltage generator configured to provide a power voltage to the display panel,
- wherein the power voltage generator comprises:
- a first switching element configured to operate based on a switching control signal;
- a second switching element connected to the first switching element, wherein the second switching element is configured to operate based on the switching control signal in a synchronous mode, and the second switching element is further configured to operate in a diode mode in an asynchronous mode;
- and
- a forced maintaining circuit connected to the second switching element and configured to maintain the asynchronous mode for a forced maintaining period after entering the asynchronous mode.
Dependencies are inferred from the claim text.