POWER SWITCH STRUCTURE AND METHOD

摘要

In one embodiment, a power switch device ( 33 ) includes a first MOSFET device 41 and a second MOSFET device ( 42 ). A split gate structure ( 84 ) including a first gate electrode ( 48,87 ) controls the first MOSFET device ( 41 ). A second gate electrode ( 49,92 ) controls the second MOSFET device ( 42 ). A current limit device ( 38 ) is coupled to the first gate electrode ( 48,97 ) to turn on the first MOSFET device during a current limit mode. A comparator device ( 36 ) is coupled to the second gate electrode ( 49,92 ) to turn on the second MOSFET device ( 42 ) when the power switch device ( 33 ) is no longer in current limit mode.