公开(公告)号：US09413225B2

公开(公告)日：2016-08-09

申请号：US14549211

申请日：2014-11-20

Applicant: STMicroelectronics S.r.l.

Inventor： Claudia Castelli ,  Claudio Adragna

IPC: H02M1/42 ,  H02M1/00

CPC classification number: H02M1/4208 ,  H02M1/4225 ,  H02M2001/0032 ,  Y02B70/126 ,  Y02B70/16

Abstract: A method controls a power factor correction converter that includes a boost inductor and a switch. The method generates a sense signal representing a rectified AC input voltage or an inductor current through the boost inductor, turns on the switch in response to determining, based on the sense signal, a zero current condition through the boost inductor, turns off the switch after an on-time interval, generates a feedback signal based on an output voltage of the converter, and compares the feedback signal with a threshold. If the feedback signal is smaller than the threshold, the method generates a command signal, representing a phase domain including 0 and π, based on the feedback signal and the power threshold, and keeps the switch off when a phase of the input rectified AC voltage or of the inductor current is in the phase domain even if the zero current condition has been determined.

Abstract translation: 一种方法控制包括升压电感和开关的功率因数校正转换器。 该方法产生表示经过升压电感的整流AC输入电压或电感电流的感测信号，响应于基于感测信号确定通过升压电感器的零电流状态来导通开关，在开关之后关闭开关 导通时间间隔，基于转换器的输出电压产生反馈信号，并将反馈信号与阈值进行比较。 如果反馈信号小于阈值，则该方法基于反馈信号和功率阈值产生表示包括0和π的相位域的指令信号，并且当输入整流AC电压的相位保持关闭 或者电感电流处于相位域，即使已经确定了零电流状态。

公开(公告)号：US09356535B2

公开(公告)日：2016-05-31

申请号：US14458078

申请日：2014-08-12

Applicant: DORA S.p.A. ,  STMicroelectronics S.r.l.

Inventor： Alberto Iorio ,  Giuseppe Scappatura ,  Alberto Bianco ,  Claudio Adragna ,  Silvio De Simone ,  Maurizio Foresta

IPC: H02M7/217 ,  H02M3/335 ,  H02M1/00

CPC classification number: H02M7/217 ,  H02M3/33507 ,  H02M3/33592 ,  H02M2001/0058 ,  Y02B70/1475 ,  Y02B70/1491

Abstract: A control device for a transistor of a switching converter rectifier generates a control signal of the transistor and includes a circuit to measure the conduction time of the body diode of the transistor cycle by cycle. When the conduction time is greater than a first threshold, the off time instant of the transistor is delayed by a first quantity in the next cycles, until the conduction time is less than the first threshold and greater than a second threshold. When the conduction time is between the first and second thresholds, the off time instant is delayed by a fixed second quantity in the next cycles until the conduction time is lower than the second threshold, with the second quantity less than the first quantity. When the conduction time is lower than the second threshold, the off time instant is advanced by the second quantity in the next cycle.

Abstract translation: 用于开关转换器整流器的晶体管的控制装置产生晶体管的控制信号，并且包括用于逐周期地测量晶体管体二极管的导通时间的电路。 当导通时间大于第一阈值时，晶体管的截止时间瞬间在下一个周期中延迟第一量，直到导通时间小于第一阈值并大于第二阈值。 当导通时间在第一阈值和第二阈值之间时，关闭时刻在下一个周期中延迟固定的第二数量，直到导通时间低于第二阈值，第二数量小于第一数量。 当导通时间低于第二阈值时，关闭时刻在下一个周期中提前第二个数量。

公开(公告)号：US20140029316A1

公开(公告)日：2014-01-30

申请号：US13951259

申请日：2013-07-25

Applicant: STMicroelectronics S.r.l.

Inventor： Claudio Adragna

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M3/315 ,  H02M3/335 ,  H02M3/33515 ,  H02M3/33523 ,  Y02B70/1433

Abstract: A method for controlling a switching regulator includes defining a waiting time during which a trigger signal corresponding to a recirculation signal of the switching regulator is ignored holding a control switch in an open condition, and detecting a number of local valleys of the recirculation signal during the waiting time. In particular, defining the waiting time is performed for each switching cycle by adding a first value, which is determined on the basis of a load on the regulator, to a second variable value, which is proportional to the number valleys detected during the waiting time of the preceding switching cycle.

Abstract translation: 用于控制开关调节器的方法包括定义等待时间，在该等待时间期间，与开关调节器的再循环信号相对应的触发信号被忽略，保持控制开关处于打开状态，并且在该期间检测再循环信号的局部谷数 等待的时间。 特别地，通过将​​基于调节器上的负载确定的第一值与在等待时间内检测到的数量谷成正比的第二可变值相加来为每个切换周期执行定义等待时间 的前一个开关周期。

公开(公告)号：US20130194842A1

公开(公告)日：2013-08-01

申请号：US13749539

申请日：2013-01-24

Applicant: DORA S.P.A. ,  STMicroelectronics S.r.l.

Inventor： Alberto Bianco ,  Claudio Adragna

IPC: H02M3/156

CPC classification number: H02M3/156 ,  H02M1/4225 ,  H02M3/157 ,  Y02B70/126

Abstract: A control device controls a switching converter. The converter has an input alternating supply voltage, a regulated direct voltage on the output terminal, and a switch connected to an inductor. The control device controls the closing and opening time period of said switch for each cycle and receives a first input signal representative of the current flowing through one element of the converter. The control device comprises a counter configured to count a time period, a comparator configured to compare said first input signal with a second signal, digital control block configured to control the closing and opening of said switch and to activate said counter to start the counting of said time period when the said first input signal crosses said second signal, with said switch being closed. The digital control block is configured to open the switch when the counter finishes the counting of said time period.

Abstract translation: 控制装置控制开关转换器。 转换器具有输入交流电源电压，输出端子上的稳压直流电压和连接到电感器的开关。 控制装置控制每个周期的所述开关的闭合和打开时间周期，并且接收表示流过转换器的一个元件的电流的第一输入信号。 控制装置包括配置成对时间段进行计数的计数器，被配置为将所述第一输入信号与第二信号进行比较的比较器，被配置为控制所述开关的关闭和打开的数字控制块，并激活所述计数器以开始计数 所述时间段，当所述第一输入信号与所述第二信号相交时，所述开关闭合。 数字控制块被配置为当计数器完成所述时间段的计数时打开开关。