公开(公告)号：US09317047B2

公开(公告)日：2016-04-19

申请号：US14014896

申请日：2013-08-30

Applicant: STMicroelectronics S.r.l.

Inventor： Osvaldo Enrico Zambetti ,  Daniele Giorgetti ,  Alessandro Zafarana

IPC: G05F1/00 ,  G05F1/10 ,  H02M3/158 ,  H02M1/00 ,  H02M3/156

CPC classification number: G05F1/10 ,  H02M3/1584 ,  H02M2001/0032 ,  H02M2003/1566 ,  Y02B70/16

Abstract: In a multi-phase power supply voltage regulator functioning at a nominal switching frequency, one or more phases are kept off for optimizing energy efficiency at relatively low load conditions. Reactivation of stand-by phases in response to a load increase transient is made more efficiently by exploiting information already present in the output voltage control loop. The technique comprises a) deriving from the control loop information on the equivalent nominal switching frequency given by the product of the nominal switching frequency by the number of active phases; b) updating at every beat of a clock signal the instantaneous value of the equivalent switching frequency; c) determining the band of equivalent switching frequency values to which the instantaneous value belongs; d) logically combining the equivalent switching frequency information with a determined band of output current level, for switching on one or more stand-by phases in response to a load increase transient.

Abstract translation: 在标称开关频率下工作的多相电源电压调节器中，一个或多个相位被保持关闭，以在相对低的负载条件下优化能量效率。 通过利用已经存在于输出电压控制回路中的信息，更有效地重新启动响应于负载增加瞬态的待机阶段。 该技术包括：a）从控制环路得出关于由标称开关频率乘积给出的等效标称开关频率与有效相位数的信息; b）在时钟信号的每个节拍上更新等效开关频率的瞬时值; c）确定瞬时值所属的等效开关频率值的频带; d）将等效开关频率信息与确定的输出电流电平的频带进行逻辑组合，以响应于负载增加瞬态来接通一个或多个待机阶段。

公开(公告)号：US20160087527A1

公开(公告)日：2016-03-24

申请号：US14954798

申请日：2015-11-30

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Alessandro Zafarana ,  Osvaldo Enrico Zambetti

IPC: H02M3/156

CPC classification number: H02M3/156 ,  H02M3/1584

Abstract: A method is provided for controlling a converter of the multiphase interleaving type. According to the method, there is detected when a change of the load applied to an output terminal of the converter occurs. All the phases of the converter are simultaneously turned off, and a driving interleaving phase shift is recovered so as to restart a normal operation of the converter. A controller for carrying out such a method is also provided.

Abstract translation: 提供了一种用于控制多相交错类型的转换器的方法。 根据该方法，检测何时发生施加到转换器的输出端子的负载变化。 转换器的所有相同时关断，并且恢复驱动交错相移，以重新开始转换器的正常操作。 还提供了一种用于执行这种方法的控制器。

公开(公告)号：US11837953B2

公开(公告)日：2023-12-05

申请号：US17869508

申请日：2022-07-20

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro Dago ,  Alessandro Gasparini ,  Osvaldo Enrico Zambetti ,  Salvatore Levantino ,  Massimo Antonio Ghioni

IPC: H02M3/07 ,  H02M3/00 ,  H02M1/00

CPC classification number: H02M3/00 ,  H02M1/007 ,  H02J2207/20

Abstract: First and second circuit branches are coupled between an input node and ground. Each circuit branch includes a series coupling first-fourth transistors in a current flow path with an output node. A first capacitor is coupled between a first capacitor node and a second capacitor node intermediate the first transistor and the second transistor in the first circuit branch. A second capacitor is coupled between a third capacitor node and a fourth capacitor node intermediate the first transistor and the second transistor in the second circuit branch. An inter-branch circuit block between the first and second branches includes a first inter-branch transistor coupled between the first capacitor node in the first circuit branch and the fourth capacitor node in the second circuit branch and a second inter-branch transistor coupled between the third capacitor node in the second circuit branch and the second capacitor node in the first circuit branch.

公开(公告)号：US11223279B2

公开(公告)日：2022-01-11

申请号：US16867259

申请日：2020-05-05

Applicant: STMicroelectronics S.r.l.

Inventor： Osvaldo Enrico Zambetti

IPC: H02M3/158 ,  H02M7/219 ,  H03K17/693 ,  H02M1/00 ,  H02M7/48

Abstract: An electronic converter comprises first and second electronic switches that are connected between positive input and output terminals, where an intermediate node between the first and second electronic switches represents a first switching node. Third and fourth electronic switches are connected between the positive output terminal and a negative input terminal, where an intermediate node between the third and fourth electronic switches represents a second switching node. A first terminal of a primary winding of a transformer is connected to the second switching node, and a capacitor and inductance are connected in series between a second terminal of the primary winding and the first switching node. Fifth and sixth electronic switches are connected between the positive output terminal and a negative output terminal, where a first terminal of the secondary winding is connected to an intermediate node between the fifth and sixth electronic switches.

公开(公告)号：US20190052165A1

公开(公告)日：2019-02-14

申请号：US16047719

申请日：2018-07-27

Applicant: STMicroelectronics S.r.l

Inventor： Osvaldo Enrico Zambetti

IPC: H02M1/08 ,  H02M3/158

Abstract: A switching cell includes: a half-bridge circuit including a first electronic switch and a second electronic switch connected in series between a first input terminal and a second input terminal of an electronic converter, wherein a first capacitor is connected in parallel to the first electronic switch and a second capacitor is connected in parallel to the second electronic switch; a first inductor connected between a first output terminal of the electronic converter and an intermediate point between the first electronic switch and the second electronic switch; a second inductor and a first capacitor connected in series between a first terminal of the first inductor and the intermediate point; a switching circuit connected between the first terminal of the first inductor and a second output terminal of the electronic converter; and a third capacitance connected between the first terminal of the first inductor and the second input terminal.

公开(公告)号：US09537409B2

公开(公告)日：2017-01-03

申请号：US15167647

申请日：2016-05-27

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Osvaldo Enrico Zambetti ,  Stefano Saggini

IPC: H02M3/335 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M3/33546 ,  H02M1/08 ,  H02M3/33592 ,  H02M3/3376 ,  H02M2001/0009 ,  H02M2001/0058 ,  H02M2003/1586 ,  Y02B70/1425 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491

Abstract: A resonant converter includes a primary switching circuit having a primary winding and a primary switching stage configured to drive the primary winding; a secondary resonant circuit having a secondary winding magnetically coupled to the primary winding, a resonance capacitor connected in parallel to the secondary winding, and first and second secondary inductors respectively coupled between an output terminal of the converter and respective terminals of the resonance capacitor; a rectification stage connected in parallel with the resonance capacitor, and having first and second switches coupled to form a half-bridge; and a feedback command circuit. The command circuit is configured to receive feedback signals representing an output voltage and an output current at the output terminal of the resonant converter, receive voltages at the terminals of the resonance capacitor, and turn on/off, independently with respect to each other, the switches of the rectification stage and the primary switching stage.

Abstract translation: 谐振转换器包括具有初级绕组和被配置为驱动初级绕组的主开关级的初级开关电路; 次级谐振电路，具有磁耦合到初级绕组的次级绕组，与次级绕组并联连接的谐振电容器，以及分别耦合在转换器的输出端子和谐振电容器的各个端子之间的第一和第二次级电感器; 整流级与所述谐振电容并联连接，并且具有耦合以形成半桥的第一和第二开关; 和反馈指令电路。 命令电路被配置为接收表示谐振变换器的输出端子处的输出电压和输出电流的反馈信号，在谐振电容器的端子处接收电压，并相互独立地接通/断开， 整流级和主开关级的开关。

公开(公告)号：US20160276942A1

公开(公告)日：2016-09-22

申请号：US15167647

申请日：2016-05-27

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Osvaldo Enrico Zambetti ,  Stefano Saggini

IPC: H02M3/335 ,  H02M1/08

CPC classification number: H02M3/33546 ,  H02M1/08 ,  H02M3/33592 ,  H02M3/3376 ,  H02M2001/0009 ,  H02M2001/0058 ,  H02M2003/1586 ,  Y02B70/1425 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491

Abstract: A resonant converter includes a primary switching circuit having a primary winding and a primary switching stage configured to drive the primary winding; a secondary resonant circuit having a secondary winding magnetically coupled to the primary winding, a resonance capacitor connected in parallel to the secondary winding, and first and second secondary inductors respectively coupled between an output terminal of the converter and respective terminals of the resonance capacitor; a rectification stage connected in parallel with the resonance capacitor, and having first and second switches coupled to form a half-bridge; and a feedback command circuit. The command circuit is configured to receive feedback signals representing an output voltage and an output current at the output terminal of the resonant converter, receive voltages at the terminals of the resonance capacitor, and turn on/off, independently with respect to each other, the switches of the rectification stage and the primary switching stage.

公开(公告)号：US09379628B2

公开(公告)日：2016-06-28

申请号：US14612124

申请日：2015-02-02

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Osvaldo Enrico Zambetti ,  Stefano Saggini

IPC: H02M3/335 ,  H02M3/337 ,  H02M1/00 ,  H02M3/158

CPC classification number: H02M3/33546 ,  H02M1/08 ,  H02M3/33592 ,  H02M3/3376 ,  H02M2001/0009 ,  H02M2001/0058 ,  H02M2003/1586 ,  Y02B70/1425 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491

Abstract: A resonant converter includes a primary switching circuit having a primary winding and a primary switching stage configured to drive the primary winding; a secondary resonant circuit having a secondary winding magnetically coupled to the primary winding, a resonance capacitor connected in parallel to the secondary winding, and first and second secondary inductors respectively coupled between an output terminal of the converter and respective terminals of the resonance capacitor; a rectification stage connected in parallel with the resonance capacitor, and having first and second switches coupled to form a half-bridge; and a feedback command circuit. The command circuit is configured to receive feedback signals representing an output voltage and an output current at the output terminal of the resonant converter, receive voltages at the terminals of the resonance capacitor, and turn on/off, independently with respect to each other, the switches of the rectification stage and the primary switching stage.

Abstract translation: 谐振转换器包括具有初级绕组和被配置为驱动初级绕组的主开关级的初级开关电路; 次级谐振电路，具有磁耦合到初级绕组的次级绕组，与次级绕组并联连接的谐振电容器，以及分别耦合在转换器的输出端子和谐振电容器的各个端子之间的第一和第二次级电感器; 整流级与所述谐振电容并联连接，并且具有耦合以形成半桥的第一和第二开关; 和反馈指令电路。 命令电路被配置为接收表示谐振变换器的输出端子处的输出电压和输出电流的反馈信号，在谐振电容器的端子处接收电压，并相互独立地接通/断开， 整流级和主开关级的开关。

公开(公告)号：US20150222193A1

公开(公告)日：2015-08-06

申请号：US14612124

申请日：2015-02-02

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Osvaldo Enrico Zambetti ,  Stefano Saggini

IPC: H02M3/335

CPC classification number: H02M3/33546 ,  H02M1/08 ,  H02M3/33592 ,  H02M3/3376 ,  H02M2001/0009 ,  H02M2001/0058 ,  H02M2003/1586 ,  Y02B70/1425 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491

Abstract: A resonant converter includes a primary switching circuit having a primary winding and a primary switching stage configured to drive the primary winding; a secondary resonant circuit having a secondary winding magnetically coupled to the primary winding, a resonance capacitor connected in parallel to the secondary winding, and first and second secondary inductors respectively coupled between an output terminal of the converter and respective terminals of the resonance capacitor; a rectification stage connected in parallel with the resonance capacitor, and having first and second switches coupled to form a half-bridge; and a feedback command circuit. The command circuit is configured to receive feedback signals representing an output voltage and an output current at the output terminal of the resonant converter, receive voltages at the terminals of the resonance capacitor, and turn on/off, independently with respect to each other, the switches of the rectification stage and the primary switching stage.

Abstract translation: 谐振转换器包括具有初级绕组和被配置为驱动初级绕组的主开关级的初级开关电路; 次级谐振电路，具有磁耦合到初级绕组的次级绕组，与次级绕组并联连接的谐振电容器，以及分别耦合在转换器的输出端子和谐振电容器的各个端子之间的第一和第二次级电感器; 整流级与所述谐振电容并联连接，并且具有耦合以形成半桥的第一和第二开关; 和反馈指令电路。 命令电路被配置为接收表示谐振变换器的输出端子处的输出电压和输出电流的反馈信号，在谐振电容器的端子处接收电压，并相互独立地接通/断开， 整流级和主开关级的开关。