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US 2006/0189067 A1Published application
Power converter apparatus using silicon germanium bipolar transistor for power switching
OwnerOsamu Kawabata, Koji Nakano +1inventors
InventorsOsamu Kawabata, Koji Nakano, Jun Utsumi
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Abstract
A power converter is composed of a switching circuit including a bipolar transistor for switching a DC power input. A SiGe heterobipolar transistor is used as the aforementioned bipolar transistor. The high speed switching characteristics of the SiGe heterobipolar transistor effectively reduces loss of the power converter.
Claims18
A power converter comprising:
- a switching circuit including a bipolar transistor for switching a DC power input,
- wherein a base layer of said bipolar transistor includes a SiGe layer.
A power converting unit comprising:
- an external input terminal receiving an external power input;
- a plurality of power converters, each of which includes a switching circuit with a bipolar transistor for switching a DC power input, a base layer of said bipolar transistor comprising a SiGe layer,
- wherein said plurality of power converters are commonly connected to said external input terminal.
Dependencies are inferred from the claim text.