Rectifiers and ac-dc power supplies employ large bulk capacitors. During power-up, these capacitors require a large amount of current to charge up, resulting in a large inrush current. This inrush current creates limitations in the operation of power devices and interference of those devices with the power line and circuit breakers. It also affects the reliability of the power system due to overstress caused by instantaneous but huge surge in initial current at power up. Known solutions to limit inrush current1,2 require resistors or conventional NTC thermistors, which contribute significant power loss and decrease the efficiency...
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