SBT4000 Product Details

The SBT4000 is an automatic DC Current controller used to control the DC inrush current into a rectified DC capacitor or in AC to DC electronic fuse (E-Fuse) type applications. When power is first applied, the SBT4000 gradually ramps up the charge on the DC bus capacitor until the peak of the AC input voltage is reached. When this happens, the controller sets the Power Good indicator to high, after which, the load can then be turned on. If at any time the current sense circuit senses that the load current is too high, then it will set the Power Good indicator low, and re-start the turn-on sequence. In this configuration, the SBT4000 can also be used as an electronic fuse (E-Fuse).