公开(公告)号：US20150002115A1

公开(公告)日：2015-01-01

申请号：US14319964

申请日：2014-06-30

Applicant: Texas Instruments Incorporated

Inventor： Pradeep S. Shenoy ,  Michael G. Amaro

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M3/1584

Abstract: A series-capacitor adaptively switched power conversion system includes, for example, a series-capacitor buck converter overlapping controller. The series-capacitor buck converter overlapping controller is arranged to provide reduced switching losses and improved system efficiency while the switched power conversion system is operating in a discontinuous conduction mode (DCM). While operating in the DCM, the series-capacitor buck converter overlapping controller generates precisely controlled frequency modulated waveforms that are adapted to independently drive control switches of one or more power converters. The series-capacitor buck converter overlapping controller is arranged to reduce (or eliminate) negative inductor current (and the associated conduction loss) that can be present in multiphase (two or more phases) series-capacitor buck converters.

Abstract translation: 串联电容器自适应切换电力转换系统包括例如串联电容降压转换器重叠控制器。 串联电容降压转换器重叠控制器布置成在开关电源转换系统工作在不连续导通模式（DCM）时提供降低的开关损耗并提高系统效率。 在DCM中工作时，串联电容降压转换器重叠控制器产生精确控制的调频波形，适用于独立驱动一个或多个功率转换器的控制开关。 串联电容降压转换器重叠控制器被布置为减少（或消除）可以存在于多相（两相或更多相）串联电容降压转换器中的负电感器电流（和相关的导通损耗）。

公开(公告)号：US20160261190A1

公开(公告)日：2016-09-08

申请号：US15060389

申请日：2016-03-03

Applicant: Texas Instruments Incorporated

Inventor： Pradeep S. Shenoy

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M1/14 ,  H02M3/1584 ,  H02M2001/0009 ,  H02M2003/1586

Abstract: A DC-to-DC power converter includes a power stage, an output stage and a ripple magnitude detector. The power stage includes a plurality of transistors, an energy transfer capacitor coupled between at least two of the transistors, and a switch node. The output stage includes an inductor coupled between switch node and a voltage output. The ripple magnitude detector detects a magnitude of a change in voltage across the energy transfer capacitor and determines an amount of current though the inductor based on the magnitude of the change in voltage across the energy transfer capacitor.

Abstract translation: DC-DC电力转换器包括功率级，输出级和纹波量值检测器。 功率级包括多个晶体管，耦合在至少两个晶体管之间的能量传输电容器和开关节点。 输出级包括耦合在开关节点和电压输出之间的电感器。 波纹幅度检测器检测能量传输电容器两端的电压变化的大小，并且基于能量传输电容器两端的电压变化幅度确定通过电感器的电流量。

公开(公告)号：US20160173029A1

公开(公告)日：2016-06-16

申请号：US15049765

申请日：2016-02-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Pradeep S. Shenoy

IPC: H02S50/00 ,  G01R19/25 ,  G01R19/00

CPC classification number: H02S50/00 ,  G01R19/0092 ,  G01R19/2513 ,  H02S50/10

Abstract: A method for determining a photovoltaic (PV) current from each of a plurality of PV elements arranged in a differential network is provided. The differential network is controlled with a plurality of control signals, where the differential network includes a plurality of inductors, and each control signal has a duty cycle. A plurality of controller parameters is received from the plurality of differential controllers. The PV current for each of the plurality of PV elements is calculated from the plurality of inductor currents and the duty cycle for each control signal.

Abstract translation: 提供了一种用于从布置在差分网络中的多个PV元件中的每一个确定光伏（PV）电流的方法。 差分网络由多个控制信号控制，其中差分网络包括多个电感器，并且每个控制信号具有占空比。 从多个差动控制器接收多个控制器参数。 根据多个电感电流和每个控制信号的占空比来计算多个PV元件中的每一个的PV电流。

公开(公告)号：US20160036312A1

公开(公告)日：2016-02-04

申请号：US14448959

申请日：2014-07-31

Applicant: Texas Instruments Incorporated

Inventor： Pradeep S. Shenoy

IPC: H02M1/00 ,  H02M3/158

Abstract: A method includes monitoring a resonant interval across a switching node. The method also includes detecting one or more preset values associated with the resonant interval across the switching node. The method further includes, in response to detecting the one or more preset values associated with the resonant interval across the switching node, initiating a high switch into an “on” operation.

Abstract translation: 一种方法包括监视跨越交换节点的谐振间隔。 该方法还包括检测与交换节点之间的谐振间隔相关联的一个或多个预设值。 该方法还包括响应于检测到与交换节点之间的谐振间隔相关联的一个或多个预设值，启动高开关进入“接通”操作。

公开(公告)号：US11211865B2

公开(公告)日：2021-12-28

申请号：US16799112

申请日：2020-02-24

Applicant: Texas Instruments Incorporated

Inventor： Joseph Maurice Khayat ,  Sergio Carlo-Rodriquez ,  Michael G. Amaro ,  Ramanathan Ramani ,  Pradeep S. Shenoy

IPC: H02M3/158 ,  H02M3/07

Abstract: A series capacitor buck converter includes a first half-bridge circuit including a first high side power switch (HSA) and first low side power switch (LSA) connected in series having a first switching node (SWA) therebetween which drives a first output inductor, a second half-bridge circuit including a second HS power switch (HSB) and second LS power switch (LSB) connected in series having a second switching node (SWB) therebetween which drives a second output inductor. A transfer capacitor (Ct) is connected in series with HSA and LSA and between the first and second half-bridge circuits. A first current source is coupled for precharging Ct with a charging current (I_in) and a second current source is coupled to Ct for providing an output current (I_out). A feedback network providing negative feedback forces I_out to match I_in.

公开(公告)号：US10693371B2

公开(公告)日：2020-06-23

申请号：US14448959

申请日：2014-07-31

Applicant: Texas Instruments Incorporated

Inventor： Pradeep S. Shenoy

IPC: H02M3/156 ,  H02M1/00

Abstract: A method includes monitoring a resonant interval across a switching node. The method also includes detecting one or more preset values associated with the resonant interval across the switching node. The method further includes, in response to detecting the one or more preset values associated with the resonant interval across the switching node, initiating a high switch into an “on” operation.

公开(公告)号：US10033276B2

公开(公告)日：2018-07-24

申请号：US15060389

申请日：2016-03-03

Applicant: Texas Instruments Incorporated

Inventor： Pradeep S. Shenoy

IPC: H02M3/158 ,  H02M1/14 ,  H02M1/00

Abstract: A DC-to-DC power converter includes a power stage, an output stage and a ripple magnitude detector. The power stage includes a plurality of transistors, an energy transfer capacitor coupled between at least two of the transistors, and a switch node. The output stage includes an inductor coupled between switch node and a voltage output. The ripple magnitude detector detects a magnitude of a change in voltage across the energy transfer capacitor and determines an amount of current though the inductor based on the magnitude of the change in voltage across the energy transfer capacitor.

公开(公告)号：US09548648B2

公开(公告)日：2017-01-17

申请号：US14318238

申请日：2014-06-27

Applicant: Texas Instruments Incorporated

Inventor： Michael G. Amaro ,  Joseph Maurice Khayat ,  Pradeep S. Shenoy

IPC: H02M3/158 ,  H02M1/08 ,  H02M3/07

CPC classification number: H02M1/08 ,  H02M3/07 ,  H02M3/1584 ,  H02M3/1588 ,  Y02B70/1466

Abstract: A power converter includes at least a first phase including a high-side MOSFET transistor (HSA) and a low-side (LS) MOSFET transistor (LSA) driving a first output inductor. The first phase further includes an active gate drive assist circuit including first MOSFET switch (first switch) and second MOSFET switch (second switch) positioned in series between a source of HSA and a drain of LSA. A capacitor (CS) is between the source of HSA and drain of LSA. A bootstrap capacitor (CA) having a reference terminal is connected to a node between the first switch and the second switch.

Abstract translation: 功率转换器至少包括驱动第一输出电感器的高边MOSFET晶体管（HSA）和低侧（LS）MOSFET晶体管（LSA））的第一相。 第一阶段还包括有源栅极驱动辅助电路，其包括串联在HSA源和LSA漏极之间的第一MOSFET开关（第一开关）和第二MOSFET开关（第二开关）。 电容器（CS）位于HSA的源极和LSA的漏极之间。 具有参考端的自举电容器（CA）连接到第一开关和第二开关之间的节点。

公开(公告)号：US20150207400A1

公开(公告)日：2015-07-23

申请号：US14159638

申请日：2014-01-21

Applicant: Texas Instruments Incorporated

Inventor： Pradeep S. Shenoy ,  Michael DiRenzo

IPC: H02M1/32 ,  H02M3/158

CPC classification number: H02M3/1584 ,  H02M3/157 ,  H02M2001/327

Abstract: Integrated circuit apparatus and processes are presented for controlling a plurality of parallel-connected DC-DC converter phases forming a multiphase DC-DC conversion system in which individual converter phases are successively activated or deactivated for increasing and decreasing load conditions, respectively, according to an ordered phase sequence, and the phase sequence is selectively modified to promote thermal balancing of the DC-DC converter phases.

Abstract translation: 提出了集成电路装置和过程，用于控制形成多相DC-DC转换系统的多个并联连接的DC-DC转换器相，其中各个转换器相分别依次激活或停用以增加和减小负载条件，根据 选择性修改相序以促进DC-DC转换器相的热平衡。