Patent ID: 8358157
Filing Date: 2013-01-22
Classification: H01L,H03K

Abstract:
1. A power switch comprising: a first power transistor having a first source electrode, a first gate electrode, and a first drain electrode; a second power transistor having a second source electrode, a second gate electrode, and a second drain electrode; and a first pilot transistor having a third source electrode, a third gate electrode, and a third drain electrode, wherein: the first, second and third drain electrodes are electrically connected together, the first and second source electrodes are electrically connected together, the first and third gate electrodes are electrically connected together and can be biased independently from the second gate electrode, the first power transistor has a first size equal to or smaller than a second size of the second power transistor, and the first size of the first power transistor is larger than a third size of the first pilot transistor, and the first power transistor, the second power transistor, and the first pilot transistor are monolithically integrated in an integrated circuit.