EP 1429222 B1 20060802 - Buck converter
Title (en)
Buck converter
Title (de)
Abwärtswandler
Title (fr)
Convertisseur abaisseur
Publication
Application
Priority
EP 02027400 A 20021209
Abstract (en)
[origin: EP1429222A1] Buck converter for generating a regulated DC output voltage (Vout) from an unregulated DC input voltage (Vin) comprising: switch means (S1) for switching said unregulated DC input voltage (Vin) to provide a pulse train; output filtering means (Ls,Cs) for low pass filtering of said pulse train; a regenerative loop providing regenerative feed back of said pulse train through a switching control circuit (SC) to a switching control input of said switch means (S1). <??>To obtain ripple reduction in the output signal of the buck converter in accordance with the invention in particular when using low ESR ceramic output capacitors, said regenerative loop includes a loop filter circuit (Lx, Cx or Rx, Cx) coupled between an output of said switch means (S1) and said switching control circuit (SC) and provides a loop time constant substantially smaller than the time constant of said output filtering means (Ls, Cs). <IMAGE>
IPC 8 full level
G05F 1/575 (2006.01)
CPC (source: EP)
G05F 1/575 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1429222 A1 20040616; EP 1429222 B1 20060802; DE 60213622 D1 20060914; DE 60213622 T2 20071018
DOCDB simple family (application)
EP 02027400 A 20021209; DE 60213622 T 20021209