公开(公告)号：US20140133195A1

公开(公告)日：2014-05-15

申请号：US14157244

申请日：2014-01-16

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Giovanni LOMBARDO ,  Claudio ADRAGNA ,  Salvatore TUMMINARO

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M3/33507 ,  Y02B70/1433 ,  Y10T307/826

Abstract: A control device for controlling a switching power supply adapted to convert an input voltage into an output voltage according to a switching rate of a switching element. The control device includes first control means for switching the switching element in a first working mode at a constant frequency and second control means for switching the switching element in a second working mode at a variable frequency, under a maximum frequency, in response to the detection of a predefined operative condition of the switching power supply. The control device further includes means for selecting the first working mode or the second working mode.

Abstract translation: 一种用于控制开关电源的控制装置，其适于根据开关元件的开关速率将输入电压转换成输出电压。 控制装置包括用于以恒定频率切换第一工作模式的开关元件的第一控制装置和用于响应于检测以最大频率以可变频率在第二工作模式下切换开关元件的第二控制装置 的开关电源的预定操作条件。 控制装置还包括用于选择第一工作模式或第二工作模式的装置。