Patent ID: 7974057

Claim:
A device, comprising: a current limiter configured to selectively limit an inrushing current for a connected load, the current limiter comprising: a current limiting conductor, and an Insulated Gate Bipolar Transistor (IGBT) switch provided in parallel with the current limiting conductor; and a controller configured to control a switching operation of the IGBT switch, the controller comprising: a switch supply configured to provide a switch control signal to selectively turn on the IGBT switch, wherein the switch supply begins to provide the switch control signal after a delay period when an external power is first supplied to the device, and a low pass filter arranged between the switch supply and a gate terminal of the IGBT switch, the LPF being configured to low pass filter the switch control signal and to supply the low pass filtered switch control signal as a gate signal to the gate of the IGBT switch.