POWER CONVERTER AND SWITCH CONTROL MODULE THEREIN
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United States of America Patent
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Jun 22, 2017
app pub date -
Jun 1, 2016
filing date -
Dec 16, 2015
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Abstract
A power converter includes: a transformer having a primary side winding to receive a rectified voltage, and a secondary side winding to generate an output DC voltage; a gallium nitride (GaN) M0SFET, coupled to the primary side winding for controlling a primary side current flowing through the primary side winding; a sensing resistor coupled to the GaN transistor switch, for sensing the primary side current to generate a current sensing signal; and a switch control unit, for controlling the GaN transistor switch according to the current sensing signal. The sensing resistor and the GaN transistor switch are connected at a ground node having a voltage level which is the ground of the primary side.
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