EP 0925635 A4 20000112 - A PROGRESSIVE START-UP CHARGE PUMP AND METHOD THEREFOR
Title (en)
A PROGRESSIVE START-UP CHARGE PUMP AND METHOD THEREFOR
Title (de)
LADUNGSPUMPE MIT PROGRESSIVEM ANLAUF UND VERFAHREN DAFÜR
Title (fr)
POMPE DE CHARGE A DEMARRAGE PROGRESSIF ET PROCEDE CORRESPONDANT
Publication
Application
Priority
- US 9723066 W 19971129
- US 89134397 A 19970710
Abstract (en)
[origin: WO9903192A1] A progressive start-up charge pump (10) that eliminates the start-up problems of p-channel charge pump stages (12) by starting the charge pump (10) one stage (12) at a time. The charge pump (10) has a plurality of charge pump stages (12) wherein each of the plurality of charge pump stages (12) are coupled to a successive charge pump stage (12) in a cascade mode. An enabling circuit (14) is coupled to each of the plurality of charge pump stages (12) for individually starting each of the plurality of charge pump stages (12) one charge pump stage (12) at a time starting with a last charge pump stage (12) and successively turning on a directly previous charge pump stage (12) until the first charge pump stage (12) is started. This will ensure that the voltage output node (12B) is at a greater potential than the voltage input node (12A) for each of the plurality of charge pump stages (12) during start-up.
IPC 1-7
IPC 8 full level
G05F 3/02 (2006.01); H02M 1/00 (2006.01); H02M 1/36 (2007.01); H02M 3/07 (2006.01)
CPC (source: EP KR)
H02M 1/36 (2013.01 - EP); H02M 3/073 (2013.01 - EP); H02M 3/18 (2013.01 - KR); H02M 1/007 (2021.05 - EP)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 9903192A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9903192 A1 19990121; EP 0925635 A1 19990630; EP 0925635 A4 20000112; JP 2001500300 A 20010109; KR 20000068537 A 20001125; TW 432768 B 20010501
DOCDB simple family (application)
US 9723066 W 19971129; EP 97949816 A 19971129; JP 50861099 A 19971129; KR 19997002025 A 19990310; TW 87102071 A 19980216