公开(公告)号：WO2010115976A1

公开(公告)日：2010-10-14

申请号：PCT/EP2010/054694

申请日：2010-04-09

Applicant: STMICROELECTRONICS S.R.L. ,  ADRAGNA, Claudio ,  SANTORO, Christian Leone ,  NOVELLI, Aldo Vittorio

Inventor： ADRAGNA, Claudio ,  SANTORO, Christian Leone ,  NOVELLI, Aldo Vittorio

IPC: H02M3/337

CPC classification number: H02M3/337 ,  Y02B70/1433

Abstract: A resonant dc-dc converter for converting an input dc voltage to an output dc voltage is provided. The converter includes a switching circuit for receiving the input dc voltage and generating a periodic square wave voltage oscillating between a high value corresponding to the input dc voltage and a low value corresponding to a fixed voltage. The square wave voltage oscillates at a main frequency with a main duty cycle. The converter further includes a switching driving circuit for driving the switching circuit. The switching driving circuit includes a timing circuit for setting the main frequency and the main duty cycle of the square wave voltage. The timing circuit is configured to set the value of the main duty cycle to about 50% when the converter operates in steady state. The converter includes a conversion circuit based on a resonant circuit for generating the output dc voltage from the square wave voltage based on the main frequency and on the main duty cycle. The converter further includes a disabling circuit for temporarily halting the timing circuit after a power on of the converter in such a way to temporarily vary the main duty cycle of the square wave voltage during at least one period of the square wave voltage.

Abstract translation: 提供了用于将输入直流电压转换为输出直流电压的谐振dc-dc转换器。 转换器包括用于接收输入直流电压并产生在对应于输入直流电压的高值与对应于固定电压的低值之间振荡的周期性方波电压的开关电路。 方波电压在主频率下以主占空比振荡。 该转换器还包括用于驱动开关电路的开关驱动电路。 开关驱动电路包括用于设定方波电压的主频率和主占空比的定时电路。 定时电路被配置为当转换器处于稳定状态时将主占空比的值设置为约50％。 转换器包括基于谐振电路的转换电路，用于根据主频率和主占空比从方波电压产生输出直流电压。 该转换器还包括禁止电路，用于在转换器通电之后临时停止定时电路，从而在方波电压的至少一个周期期间临时改变方波电压的主占空比。

公开(公告)号：EP2417697A1

公开(公告)日：2012-02-15

申请号：EP10715196.1

申请日：2010-04-09

Applicant: STMicroelectronics S.r.l.

Inventor： ADRAGNA, Claudio ,  SANTORO, Christian Leone ,  NOVELLI, Aldo Vittorio

IPC: H02M3/337

CPC classification number: H02M3/337 ,  Y02B70/1433

Abstract: A resonant dc-dc converter for converting an input dc voltage to an output dc voltage is provided. The converter includes a switching circuit for receiving the input dc voltage and generating a periodic square wave voltage oscillating between a high value corresponding to the input dc voltage and a low value corresponding to a fixed voltage. The square wave voltage oscillates at a main frequency with a main duty cycle. The converter further includes a switching driving circuit for driving the switching circuit. The switching driving circuit includes a timing circuit for setting the main frequency and the main duty cycle of the square wave voltage. The timing circuit is configured to set the value of the main duty cycle to about 50% when the converter operates in steady state. The converter includes a conversion circuit based on a resonant circuit for generating the output dc voltage from the square wave voltage based on the main frequency and on the main duty cycle. The converter further includes a disabling circuit for temporarily halting the timing circuit after a power on of the converter in such a way to temporarily vary the main duty cycle of the square wave voltage during at least one period of the square wave voltage.