Monolithic MOSFET and Schottky diode for mobile phone boost converter
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United States of America Patent
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Apr 28, 2015
Grant Date -
Aug 21, 2014
app pub date -
Apr 24, 2014
filing date -
Jan 21, 2005
priority date (Note) -
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Abstract
A cell phone has a plurality of interconnected electronic components for performing the electrical functions of the phone. A DC/DC converter provides an operating voltage which is applied to power supply terminals of the plurality of interconnected electronic components. The DC/DC converter uses a monolithic semiconductor device containing a power metal oxide semiconductor field effect transistor (MOSFET) and Schottky diode. The semiconductor device has the lateral diffused MOSFET formed on a surface of the semiconductor device. The MOSFET is formed with a plurality conduction fingers. The Schottky diode is also formed on the surface of the semiconductor device and integrated between the plurality of conduction fingers of the MOSFET. The drain of the MOSFET is connected to the anode of the diode on the surface of the monolithic semiconductor device.
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