Patent ID: 6034517
Filing Date: 2000-03-07
Classification: H02M,H03K

Abstract:
A switching regulator circuit having an input terminal for connection to a source of input supply voltage and an output terminal for supplying a regulated output voltage to a load, said switching regulator circuit comprising:an output switch section that includes a first switching device coupled between said input terminal and said output terminal; anda logic section coupled to said output switch section, said logic section providing a first signal that turns ON said output switch section, a second signal that turns OFF said output switch section, and a third signal that activates one of at least two turn-on-speed modes of said output switch section, said logic section comprising a latch that receives signals indicating whether said output switch section should be turned ON or OFF;wherein said output switch section selectively operates in at least one of a first turn-on-speed mode having relatively faster voltage transitions for higher efficiency and a second turn-on-speed mode having relatively slower voltage transitions for lighter loads.