EP 1624357 A1 20060208 - Voltage regulator having inverse adaptive control means
Title (en)
Voltage regulator having inverse adaptive control means
Title (de)
Spannungsregler mit adaptiven Umkehrregelungsmitteln
Title (fr)
Régulateur de tension avec moyens de commande inverse adaptatives
Publication
Application
Priority
EP 04018702 A 20040806
Abstract (en)
A low drop-out (LDO) voltage regulator that has high a PSRR (Power Supply Ripple Rejection) performance and a high load regulation with low current consumption is disclosed. The voltage regulator does not require any high gain error amplifier that may cause instability in the voltage regulator. A novel voltage-controlled current-feedback means (90) is presented that generates an inverse phase signal and compensation voltage for a ripple noise and dropout voltage, respectively. The voltage-controlled current-feedback means (90) generates a negative voltage slope with regard to the power supply voltage, which can cancel the ripple noise at the output terminal. Said means creates a positive coefficient voltage with regard to the load current, which compensates the voltage drop caused by parasitic resistances.
IPC 8 full level
G05F 1/575 (2006.01)
CPC (source: EP)
G05F 1/575 (2013.01)
Citation (search report)
- [XA] US 5055767 A 19911008 - NELSON CARL T [US]
- [XA] US 4315207 A 19820209 - APFEL RUSSELL J
- [XA] US 3870896 A 19750311 - KIKO FREDERICK
- [A] US 5408173 A 19950418 - KNAPP HERBERT C [US]
- [A] US 4535276 A 19850813 - YOKOBORI NOBUYOSHI [JP]
Designated contracting state (EPC)
BE DE FI FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04018702 A 20040806