Patent ID: 6567261
Filing Date: 2003-05-20
Classification: H01L,H02M

Abstract:
A DCâ€”DC step-down converter including a plurality of power MOSFETs, a drive circuit for supplying a drive signal to control electrodes of said plurality of power MOSFETs to drive said power MOSFETs, a smoothing coil connected at one end to a connection point of said power MOSFETs, and a charge storage device connected to an other end of said smoothing coil, comprising:a control circuit for producing a control signal for said drive circuit in accordance with a difference between a reference voltage and a voltage of a connection point of said smoothing coil and said charge storage device; wherein said smoothing coil includes an electric double-layer capacitor having a plurality of positive electrode terminals and a plurality of negative electrode terminals, and said plurality of positive and negative-electrode terminals are disposed on a surface identical to a surface of said electric double-layer capacitor.