1.4 Power Management Circuits

With outputs that are not only electrically isolated from each other but also isolated from logic controls and ground reference, the HT0440 is useful in a variety of power management circuits. The simple application of input logic allows for power rails to directly switch up to 400V via high voltage N-channel MOSFETS. The HT0440 structure, which has a high degree of galvanic isolation, independently controls two separate power circuits. These power loops need not even have the same ground reference as the logic signals; they can be totally floating systems with their own “ground” references.