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：WO2005086333A1

公开(公告)日：2005-09-15

申请号：PCT/EP2005/050737

申请日：2005-02-21

Applicant: STMICROELECTRONICS s.r.l. ,  ADRAGNA, Claudio ,  FAGNANI, Mauro

Inventor： ADRAGNA, Claudio ,  FAGNANI, Mauro

IPC: H02M3/28

CPC classification number: H02M3/28 ,  H02M2001/0006 ,  H02M2001/009

Abstract: The present invention refers to switching power supplies and in particular to a circuit for reducing the variations of auto-supply voltage of a control circuit of a switching power supply. In an embodiment thereof the circuit for reducing the variations of the auto-supply voltage (Vcc) of a control circuit (12) of a switching power supply where said control circuit (12) supplies an activation or deactivation signal of a power transistor comprises: a generator (Wa) of said auto-supply voltage (Vcc); characterized in that it comprises a controlled switch (T) capable of selectively connecting said generator (Wa) to said control circuit (12); and a driving circuit (SW2) of said controlled switch (T) that supplies a closing signal of said controlled switch (T) after a predefined delay of time (Td) starting from said deactivation command.

Abstract translation: 本发明涉及开关电源，特别是涉及用于减小开关电源的控制电路的自动供电电压的变化的电路。 在其实施例中，用于减小开关电源的控制电路（12）的变化的电路，其中所述控制电路（12）提供功率晶体管的激活或去激活信号包括： 所述自动电源电压（Vcc）的发电机（Wa）; 其特征在于，其包括能够选择性地将所述发电机（Wa）连接到所述控制电路（12）的受控开关（T）; 以及所述受控开关（T）的驱动电路（SW2），其在从所述去激活命令开始的预定的延迟时间（Td）之后提供所述受控开关（T）的闭合信号。

公开(公告)号：WO2012084845A1

公开(公告)日：2012-06-28

申请号：PCT/EP2011/073270

申请日：2011-12-19

Applicant: STMICROELECTRONICS S.R.L. ,  STROPPA, Alberto ,  SPINI, Claudio ,  ADRAGNA, Claudio

Inventor： STROPPA, Alberto ,  SPINI, Claudio ,  ADRAGNA, Claudio

IPC: H02M3/337

CPC classification number: H02M3/33507 ,  H02M3/3376 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A control device for a switching mode DC-DC converter, the converter comprising at least a half-bridge with at least first (Q1) and second (Q2) switches connected between an input voltage (Vin) and a reference voltage. The converter further comprises a transformer (20) with a primary coupled with the center point (HB) of the half -bridge and a secondary (22) coupled with a load (Load). The control device comprises an error detector (2) configured to determine an error signal (Se) between a first signal (Vout1) representative of the voltage (Vout) across the load and a first reference signal (Vref2) and a frequency controller (100) configured to increase the switching frequency of the half -bridge when the error signal (Se) is kept below a second signal (Vrefl).

Abstract translation: 一种用于开关模式DC-DC转换器的控制装置，所述转换器至少包括连接在输入电压（Vin）和参考电压之间的至少第一（Q1）和第二（Q2）开关的半桥。 该转换器还包括具有与半桥的中心点（HB）初级耦合的变压器（20）和与负载（负载）耦合的次级（22）。 控制装置包括误差检测器（2），其被配置为确定表示负载之间的电压（Vout）的第一信号（Vout1）与第一参考信号（Vref2）和频率控制器（100）之间的误差信号（Se） ）被配置为当误差信号（Se）保持低于第二信号（Vrefl）时增加半桥的开关频率。

公开(公告)号：WO2007148354A1

公开(公告)日：2007-12-27

申请号：PCT/IT2006/000476

申请日：2006-06-21

Applicant: STMICROELECTRONICS S.R.L. ,  ADRAGNA, Claudio ,  GATTAVARI, Giuseppe

Inventor： ADRAGNA, Claudio ,  GATTAVARI, Giuseppe

IPC: H02J1/10 ,  H02M3/158

CPC classification number: H02M3/1584 ,  H02J1/102 ,  H02M2001/0048 ,  Y02B70/1491 ,  Y10T307/406 ,  Y10T307/555 ,  Y10T307/707

Abstract: A control device of a plurality of switching converters (Convl.ConvN) is disclosed; each converter comprises at least one power switch and is associated with a control circuit (Mod1 ...ModN) of the at least one power switch. The control device comprises means (100) suitable for comparing a signal (CTRL) representative of the load of the plurality of converters (ConvL.ConvN) with a plurality of reference signals (Vref1 ...Vref(N-l)) and suitable for enabling or disabling at least one of said plurality of control circuits (Mod1...ModN) in response to said comparison.

Abstract translation: 公开了多个开关转换器（Convl.ConvN）的控制装置; 每个转换器包括至少一个电源开关并与所述至少一个电源开关的控制电路（Mod1 ... ModN）相关联。 控制装置包括适于将表示多个转换器（ConvL.ConvN）的负载的信号（CTRL）与多个参考信号（Vref1 ... Vref（N1））进行比较并且适合于使能的装置（100） 或者响应于所述比较而禁用所述多个控制电路（Mod1 ... ModN）中的至少一个。

公开(公告)号：WO2005091481A1

公开(公告)日：2005-09-29

申请号：PCT/EP2005/050880

申请日：2005-03-01

Applicant: STMICROELECTRONICS S.R.L. ,  ADRAGNA, Claudio

Inventor： ADRAGNA, Claudio

IPC: H02M1/00

CPC classification number: H02M1/32

Abstract: The present invention relates to switching. power supplies, and especially to a method and the related circuit for protection against malfunctioning of the feedback loop in switching power supplies. More particularly it relates to a circuit for the identification of a condition of excessively high voltage at the output. In one embodiment the circuit for the protection against malfunctioning of the feedback loop of a switching power supply comprises: means for generating (vaux R1, R2) a voltage proportional to the output voltage of said switching power supply; a comparator (15) for comparing said voltage proportional to the output voltage with a reference voltage (vth); a counter (17) coupled to said comparator capable of supplying an output signal when said voltage proportional to the output voltage exceeds said reference voltage a preset number of times; said output signal is indicative of a malfunctioning of the feedback loop.

Abstract translation: 本发明涉及切换。 电源，特别是用于防止开关电源中的反馈回路故障的方法和相关电路。 更具体地说，涉及用于识别输出端的过高电压条件的电路。 在一个实施例中，用于防止开关电源的反馈回路故障保护的电路包括：用于产生与所述开关电源的输出电压成比例的电压的装置（vaux R1，R2） 比较器（15），用于将与输出电压成比例的所述电压与参考电压（vth）进行比较; 当与所述输出电压成比例的所述电压超过所述参考电压预定次数时，耦合到所述比较器的计数器（17）能够提供输出信号; 所述输出信号表示反馈回路的故障。

公开(公告)号：WO2004027965A1

公开(公告)日：2004-04-01

申请号：PCT/IT2002/000602

申请日：2002-09-20

Applicant: STMICROELECTRONICS S.R.L. ,  PIDUTTI, Albino ,  ADRAGNA, Claudio ,  FAGNANI, Mauro

Inventor： PIDUTTI, Albino ,  ADRAGNA, Claudio ,  FAGNANI, Mauro

IPC: H02M1/00

CPC classification number: H02M1/4225 ,  Y02B70/126

Abstract: A power factor correction device for switching power supplies is described, which comprises a converter (20) and a control device (100;200;300) coupled with said converter (20) in such a way as to obtain from a input network alternated voltage (Vin) a direct regulated voltage (Vout) at the output terminal. The converter (20) comprises a power transistor (M) and the control device (100;200;300) comprises an error amplifier (3) having in input at the inverting terminal a first signal (Vr) proportional to said regulated voltage (Vout) at at the non-inverting terminal a voltage reference (Vref), at least one capacitor (C) having a first terminal and a second terminal which are coupled respectively with the inverting terminal and the output terminal (31) of the error amplifier (3) and a driving circuit (4-6) of said power transistor (M) which is coupled with the second terminal of said capacitor (C). The control device (100;200;300) comprises interruption means (SW)placed between the output terminal (31) of said error amplifier (3) and said driving circuit (4-6) for at least one time period (T) lower than the time period (Tciclo) in which said control device (100; 200; 300) is operative.

Abstract translation: 描述了用于开关电源的功率因数校正装置，其包括与所述转换器（20）耦合的转换器（20）和控制装置（100; 200; 300），以便从输入网络获得交替电压 （Vin）在输出端子处的直接调节电压（Vout）。 所述转换器（20）包括功率晶体管（M），所述控制装置（100; 200; 300）包括误差放大器（3），所述误差放大器（3）在所述反相端子处具有与所述调节电压（Vout ）在非反相端子处具有电压基准（Vref），至少一个具有第一端子和第二端子的电容器（C），其分别与误差放大器的反相端子和输出端子（31）耦合 3）和与所述电容器（C）的第二端子耦合的所述功率晶体管（M）的驱动电路（4-6）。 控制装置（100; 200; 300）包括放置在所述误差放大器（3）的输出端（31）和所述驱动电路（4-6）之间的至少一个时间段（T）较低的中断装置（SW） 比所述控制装置（100; 200; 300）可操作的时间段（Tciclo）高。

公开(公告)号：WO2004010569A1

公开(公告)日：2004-01-29

申请号：PCT/IT2002/000478

申请日：2002-07-19

Applicant: STMICROELECTRONICS S.R.L. ,  FAGNANI, Mauro ,  PIDUTTI, Albino ,  ADRAGNA, Claudio

Inventor： FAGNANI, Mauro ,  PIDUTTI, Albino ,  ADRAGNA, Claudio

IPC: H02M1/00

CPC classification number: H02M1/36 ,  H02M3/335 ,  H02M2001/0006

Abstract: The present invention refers to a starting circuit for switching power supplies (SMPS), to a switching power supply comprising a starting circuit )and an integrated circuit of a switching power supply. In an embodiment thereof the starting circuit (13) for switching power supplies having a first supply voltage (Vin) coming from a first terminal and a second supply voltage (Vcc) coming from a second terminal and a third tenninal (30); said starting circuit comprises: a first current path between said first terminal and said third terminal (30); a second current path between said first tenninal and said second terminal; a third current path between said second terminal and said third terminal (30); a two-way voltage regulator (M3, Dz2, R5, R6) placed along said second current path.

Abstract translation: 本发明涉及用于切换电源（SMPS）的起动电路，包括起动电路的开关电源）和开关电源的集成电路。 在其实施例中，用于切换来自第一端子的第一电源电压（Vin）和来自第二端子和第三端子（30）的第二电源电压（Vcc）的电源的启动电路（13）。 所述启动电路包括：在所述第一端子和所述第三端子之间的第一电流路径; 所述第一终端和所述第二终端之间的第二电流路径; 所述第二端子和所述第三端子之间的第三电流通路; 沿着所述第二电流路径放置的双向电压调节器（M3，Dz2，R5，R6）。

公开(公告)号：WO2011151269A2

公开(公告)日：2011-12-08

申请号：PCT/EP2011/058766

申请日：2011-05-27

Applicant: STMICROELECTRONICS S.R.L. ,  ADRAGNA, Claudio

Inventor： ADRAGNA, Claudio

IPC: H02M3/335 ,  H02M7/217

CPC classification number: H02M3/3353 ,  H02M3/33507 ,  H02M3/33523 ,  H02M7/2176 ,  H02M2001/0022

Abstract: An integrated circuit controls a switch of a switching current regulator. The current regulator comprises primary and secondary windings where a first and a second current flow, respectively. The switch is adapted to initiate or interrupt the circulation of the first current in the primary winding. The control integrated circuit comprises a comparator configured to compare a first signal representative of said first current to a second signal and a divider circuit configured to generate said second signal as a ratio of a third signal, proportional to a voltage on the primary winding, with a voltage on a capacitor. The capacitor is charged by a further current controlled by the third signal when the second current is different from zero and is discharged through resistor when the value of said second current is substantially zero.

Abstract translation: 集成电路控制开关电流调节器的开关。 电流调节器包括分别具有第一和第二电流的初级和次级绕组。 开关适于启动或中断初级绕组中的第一电流的循环。 所述控制集成电路包括：比较器，被配置为将表示所述第一电流的第一信号与第二信号进行比较;以及分频器电路，其被配置为产生所述第二信号，所述比较器与所述初级绕组上的电压成正比的第三信号与 电容上的电压。 当第二电流不同于零时，电容器被由第三信号控制的另外的电流充电，并且当所述第二电流的值基本上为零时，通过电阻放电。

公开(公告)号：WO2011138276A3

公开(公告)日：2011-11-10

申请号：PCT/EP2011/056956

申请日：2011-05-02

Applicant: STMICROELECTRONICS S.R.L. ,  SPINI, Claudio ,  ADRAGNA, Claudio

Inventor： SPINI, Claudio ,  ADRAGNA, Claudio

IPC: H02M3/335

Abstract: An integrated control circuit of a switch is described, which is adapted to open or close a current path; said integrated circuit includes a comparator to compare a first signal with a second signal representative of the current flowing through said current path. The comparator outputs a third variable signal between a low logic level and a high logic level according to whether said second signal is lower than said first signal or vice versa; the integrated circuit has a driver to generate a signal to drive said switch in response to the third signal, and is configured to detect a spike on the leading edge of said second signal and to blank said third signal for a first blanking time period which depends on a turn-on delay of said switch and a second blanking period which depends on the duration of said spike on the leading edge of said second signal.

公开(公告)号：WO2005091480A1

公开(公告)日：2005-09-29

申请号：PCT/EP2005/050848

申请日：2005-02-28

Applicant: STMICROELECTRONICS s.r.l. ,  ADRAGNA, Claudio ,  FAGNANI, Mauro ,  MORICONI, Ugo

Inventor： ADRAGNA, Claudio ,  FAGNANI, Mauro ,  MORICONI, Ugo

IPC: H02M1/00

CPC classification number: H02M1/32 ,  H02M1/4225 ,  Y02B70/126

Abstract: There is described a device for the correction of the power factor in forced switching power supplies. The device comprises a converter (20) and a control device (100) coupled with the converter (20) in order to obtain from an alternated mains input voltage (Vin) a regulated voltage (Vout) on the output terminal; the converter (20) comprises a power transistor (M) and said control device (100) comprises an error amplifier (3) having in input on the inverting terminal a signal (Vr) proportional to the regulated voltage (Vout) and on the non-inverting terminal a reference voltage (Vref). The signal (Vr) proportional to the regulated voltage is produced by a first resistance (R1) and a second resistance (R2) coupled in series to which is applied said regulated voltage (Vout); a terminal of the second resistance (R2) is connected with the inverting terminal of the error amplifier (3). The device for the correction of the power factor comprises first means (D50) positioned between the first resistance (RI) and the inverting terminal of the error amplifier (3) and second means (50) suitable for detecting the electrical connection of the first means (D50) with the output terminal of said device for the correction of the power factor and suitable for detecting an output signal (Vr2) of the second resistance (R2). The second means (50) are suitable for supplying a malfunction signal (Fault) of the device for the correction of the power factor when the second means (50) detect electric disconnection of the first means (D50) from said output terminal (Out) or when the output signal (Vr2) of the second resistance (R2) tends to zero.

Abstract translation: 描述了用于在强制开关电源中校正功率因数的装置。 该装置包括与转换器（20）耦合的转换器（20）和控制装置（100），以便从输出端子上的交流电源输入电压（Vin）获得调节电压（Vout）; 所述转换器（20）包括功率晶体管（M），并且所述控制装置（100）包括误差放大器（3），所述误差放大器（3）在反相端子上具有与调节电压（Vout）成比例的信号（Vr） - 反相端子参考电压（Vref）。 与调节电压成比例的信号（Vr）由与所述调节电压（Vout）一起施加的串联耦合的第一电阻（R1）和第二电阻（R2）产生; 第二电阻（R2）的端子与误差放大器（3）的反相端连接。 用于校正功率因数的装置包括位于误差放大器（3）的第一电阻（RI）和反相端之间的第一装置（D50）和第二装置（50），适于检测第一装置 （D50）与所述装置的输出端子进行功率因数的校正，并适于检测第二电阻（R2）的输出信号（Vr2）。 第二装置（50）适用于当第二装置（50）检测到第一装置（D50）从所述输出端子（Out）的电断开时，提供用于校正功率因数的装置的故障信号（Fault） 或者当第二电阻（R2）的输出信号（Vr2）变为零时。