Lossless over-current detection circuit for Royer oscillators and push-pull converters
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United States of America Patent
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Jun 5, 2018
Issued Date -
Aug 27, 2015
app pub date -
Oct 9, 2013
filing date -
Oct 9, 2012
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Abstract
A circuit including over-current protection includes a voltage input, first and second switching transistors that are complementarily switched and that receive current from the voltage input, a first resistor, a first diode including a first anode and a first cathode, and a second diode including a second anode and a second cathode. The first anode and the second anode are connected to each other and are connected to the voltage input via the first resistor. The first cathode is connected to the first switching transistor and the second cathode is connected to the second switching transistor such that the connection of the first and second anodes provides an over-current signal that is related to the current in the first and second switching transistors.
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