Patent ID: 6759856
Filing Date: 2004-07-06
Classification: G01R

Abstract:
A switching regulator having first, second, third and fourth terminals, comprising:a first power transistor disposed between the first terminal and a first node, the first power transistor being partitioned into a plurality of individually-addressable first transistor segments; a second power transistor disposed between the first node and a second node, the second node coupling the second and fourth terminals, the second power transistor being partitioned into a plurality of individually-addressable second transistor segments; a filter including a capacitor and an inductor, the inductor being disposed between the first node and the third terminal, and the capacitor being disposed between the third and fourth terminals; and a controller operable in a plurality of modes including a normal mode in which the controller opens and closes all of the first transistor segments and all of the second transistor segments; and a test mode in which the controller opens and closes less than all of the first transistor segments and all of the second transistor segments.