Patent ID: 6654264
Filing Date: 2003-11-25
Classification: G05F,H02J,H02M,Y02B

Abstract:
A voltage regulator system comprising:an output terminal to connect to a load impedance; a first voltage regulator to generate a regulated output voltage on said output terminal; and a second voltage regulator to generate a regulated output voltage on said output terminal, wherein said second voltage regulator is enabled based upon an output current of said first voltage regulator; wherein said first voltage regulator generates an over current indication when the output current of said first voltage regulator exceeds a threshold value, said second voltage regulator being enabled in response to said over current indication generated by said first voltage regulator, said second voltage regulator being enabled via a logic circuit having a first input terminal to receive an over current indication of said first voltage regulator and an output terminal coupled to an enable input of the second voltage regulator; and wherein said second voltage regulator is disabled based upon an output current of said second voltage regulator.