公开(公告)号：EP2054787B1

公开(公告)日：2009-12-23

申请号：EP06796258.9

申请日：2006-08-07

Applicant: STMicroelectronics S.r.l.

Inventor： FAGNANI, Mauro ,  BARTOLO, Vincenzo ,  ADRAGNA, Claudio

IPC: H02M1/42 ,  G05F1/70

CPC classification number: G05F1/70

公开(公告)号：EP2054787A1

公开(公告)日：2009-05-06

申请号：EP06796258.9

申请日：2006-08-07

Applicant: STMicroelectronics S.r.l.

Inventor： FAGNANI, Mauro ,  BARTOLO, Vincenzo ,  ADRAGNA, Claudio

IPC: G05F1/70 ,  H02M1/00

CPC classification number: G05F1/70

Abstract: Herein described is a control device of a device for the correction of the power factor in forced switching power supplies; said device for the correction of the power factor comprises a converter (20) and said control device (1) is coupled to the converter to obtain from an alternating input line voltage (Vin) a regulated output voltage (Vout) . The control device (1) comprises generating means (421-423) associated to a capacitor (Cf f) for generating a signal (Vff) representative of the root-mean- square value of the alternating line voltage; the generating means (421-424) are associated to means for discharging (Rf f) said capacitor. The control device comprises further means for discharging (Ml, COMPl, Cl; Ml 6, COMPI 1, CI 1; M50, COMP22, C0MP33, Cint) the capacitor (Cf f) suitable for discharging said capacitor when the signal (Vff) representative of the root-mean- square value of the alternating line voltage goes below a given value (VCl, VCI 1, Vint) .

Abstract translation: 这里描述的是用于强制开关电源中的功率因数校正的装置的控制装置; 所述用于校正功率因数的装置包括转换器（20），并且所述控制装置（1）耦合到转换器以从交流输入线电压（Vin）获得经调节的输出电压（Vout）。 控制装置（1）包括与电容器（Cff）相关联的产生装置（421-423），用于产生表示交流线电压的均方根值的信号（Vff） 生成装置（421-424）与用于放电（Rff）所述电容器的装置相关联。 所述控制装置包括用于当所述信号（Vff）代表性的信号（Vff）代表当所述信号（Vff）代表所述电容器（Cff）时适合于使所述电容器放电的另一装置（M1，COMP1，C1; M16，COMP1，CI1; M50，COMP22，C0MP33， 的交流线电压的均方根值低于给定值（VCl，VCI 1，Vint）。