SWITCH MODE POWER SUPPLY WITH A CASCODE CIRCUIT
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United States of America Patent
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Issued Date -
Feb 11, 2016
app pub date -
Nov 18, 2013
filing date -
Dec 17, 2012
priority date (Note) -
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Abstract
The invention relates to a switch mode power supply (202) including a switch element (308) having an NPN-bipolar transistor (402) and a self-conductive field effect transistor (404). The NPN-bipolar transistor (402) and the field effect transistor (404) are connected to form a cascode (400). The NPN-bipolar transistor (402) is electrically connected to a winding (502) of a transformer (504), and an additional winding (508) of the transformer (504) is electrically connected to a base connection (408) of the bipolar transistor (402).
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