公开(公告)号：EP2509205A1

公开(公告)日：2012-10-10

申请号：EP12162990.1

申请日：2012-04-03

Applicant: STMicroelectronics S.r.l.

Inventor： De Simone, Silvio ,  Adragna, Claudio

IPC: H02M3/338 ,  H02M1/44

CPC classification number: H02M3/3381 ,  H02M1/44 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1441 ,  Y02B70/1491

Abstract: A control device for a QR switching power converter is described; said power converter is adapted to convert an input signal (Vin) to a DC output signal (Vout) and comprises a power switch (Q1) connected to said input signal and adapted to regulate said DC output signal and magnetic storage means (1). The control device is able to determine the switching frequency of the power switch (Q1) and it is supplied by a feedback signal (Vf) deriving from a feedback circuit (12, 11) coupled to the output signal (Vout) of the power converter; said control device performs a control loop regulating the DC output signal (Vout) by controlling a control variable (Ton, Ipkp). The control device comprises modulating means (100) adapted to modulate said control variable (Ton, Ipkp) as a function of at least one modulating signal (Smod; Smodl...Smodn) having a frequency higher than the control loop bandwidth.

Abstract translation: 用于QR开关功率转换器的控制装置进行说明; 所述功率转换器是angepasst对输入信号（Vin）转换为DC输出信号（Vout），并且包括连接至所述输入信号和angepasst电源开关（Q1），以调节所述DC输出信号和磁存储装置（1）。 所述控制装置能够确定的矿井功率开关（Q1）的开关频率，它是由从耦合到所述功率转换器的输出信号（Vout）的反馈电路（12，11）导出的反馈信号（VF）SUPPLIED ; 所述控制设备执行的控制环路调节通过控制的控制变量（声音，Ipkp）直流输出信号（Vout）。 该控制装置包括调制装置（100）angepasst来调制所述控制变量（声音，Ipkp），为至少一个调制信号（S MOD; Smodl ... Smodn）的函数具有比控制回路带宽高的频率。