Rosenberg, Klein & Lee
Apparatus and method for over-voltage and over-current protection for a step-up current-mode converter
In an apparatus for over-voltage and over-current protection for a step-up current-mode converter including an inductor connected via a phase node to a switch that is switched by a control signal to convert an input voltage to an output voltage, a controller has a multiplexed pin, and a resistor and a capacitor are connected in parallel between the multiplexed pin and the phase node. In an over-voltage protection mode, the controller senses the voltage on the multiplexed pin, and in an over-current protection mode, the controller supplies a current to flow through the resistor and senses the voltage on the multiplexed pin.
Richtek Technology Corp.
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additional inventional additional
Kwan-Jen Chung-Lung Jing-Meng Chun-Chin
Chu Pai Liu Tung