Patent ID: 9154026
Filing Date: 2015-10-06
Classification: H02M,Y02B

Abstract:
1. An apparatus comprising: a low-side switch coupled to an output node for providing regulated voltage supply; a first driver operable to cause the low-side switch to turn off when the output node rises above a first transistor threshold voltage; a high-side switch coupled to the output node; and a second driver operable to cause the high-side switch to turn on when either the output node reaches a second transistor threshold voltage or when a control signal causes the high-side switch to turn on, wherein the high-side switch comprises a cascode device including a first p-type transistor coupled to the output node and a second p-type transistor, wherein the second p-type transistor is driven by the second driver according to a voltage level on a node coupling the first p-type transistor to the second p-type transistor.