Switching transformers and electronic devices including the same
AssigneeSamsung Electronics Co., Ltd.
InventorsYoungmin Kim, Sunwoo Lee
Life of this patent
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Abstract
A switching transformer includes a primary circuit and a secondary circuit. The primary circuit includes a first input/output (I/O) terminal, a plurality of primary windings, and primary switching circuitry including at least one switch configured to selectively connect the plurality of primary windings in series or in parallel. The secondary circuit includes a second I/O terminal, a plurality of secondary windings, and secondary switching circuitry including at least one switch configured to selectively connect the plurality of secondary windings in series or in parallel.
Claims15
A switching transformer comprising:
- a primary circuit comprising a first input/output (I/O) terminal, which is a single ended terminal, a plurality of primary windings, and primary switching circuitry comprising a plurality of switches configured to selectively connect the plurality of primary windings in series between a supply voltage terminal and the single ended terminal, and to selectively connect the plurality of primary windings in parallel between the supply voltage terminal and the single ended terminal;
- and
- a secondary circuit comprising first and second differential I/O terminals, first, second, third and fourth secondary windings, and secondary switching circuitry comprising a plurality of switches configured to selectively connect the first and second secondary windings in series between the first differential I/O terminal and a center tab node, selectively connect the first and second secondary windings in parallel between the first differential I/O terminal and the center tab node, selectively connect the third and fourth secondary windings in series between the second differential I/O terminal and the center tab node, and selectively connect the third and fourth secondary windings in parallel between the second differential terminal and the center tab node,
- wherein each of the primary switching circuitry and the secondary switching circuitry performs a switching operation based on a frequency band of an input signal received from the first I/O terminal.
An electronic device comprising:
- a primary circuit comprising a first input/output (I/O) terminal, which is a single ended terminal, a plurality of primary windings, and primary switching circuitry comprising a plurality of switches configured to selectively connect the plurality of primary windings in series between a supply voltage terminal and the single ended terminal, and to selectively connect the plurality of primary windings in parallel between the supply voltage terminal and the single ended terminal;
- a secondary circuit comprising first and second differential I/O terminals, first, second, third and fourth secondary windings, and secondary switching circuitry comprising a plurality of switches configured to selectively connect the first and second secondary windings in series between the first differential I/O terminal and a center tab node, selectively connect the first and second secondary windings in parallel between the first differential I/O terminal and the center tab node, selectively connect the third and fourth secondary windings in series between the second differential I/O terminal and the center tab node, and selectively connect the third and fourth secondary windings in parallel between the second differential I/O terminal and the center tab node;
- and
- control logic configured to output a switching control signal to the primary switching circuitry and the secondary switching circuitry to thereby activate one of a plurality of modes.
Dependencies are inferred from the claim text.