Patent ID: 7259473
Filing Date: 2007-08-21
Classification: H02J

Abstract:
1. A DC-DC converter comprising: a plurality of DC-DC converter channels having outputs thereof combined at an output (VOUT) to provide a composite DC power output to a load, and wherein one of said channels comprises a fast transient response power path, said fast transient response power path having voltage feedback from VOUT to its input and a first current sensing circuit in its output current path for sensing output current provided by said fast transient response power path and another of said channels comprises a high efficiency power path, said high efficiency power path having a difference amplifier coupled to its input, wherein said high efficiency power path does not include any voltage feedback from said VOUT to its input; and wherein an output of said first current sensing circuit is coupled to one input of said difference amplifier, the other input of said difference amplifier referenced to a reference level associated with a reference current.