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1. 发明申请

WO2016127176A1 SOFT SWITCHING FLYBACK CONVERTER 审中-公开
标题翻译：软开关变频器
公开(公告)号：WO2016127176A1
公开(公告)日：2016-08-11
申请号：PCT/US2016/017006
申请日：2016-02-08
申请人： TEXAS INSTRUMENTS INCORPORATED , TEXAS INSTRUMENTS JAPAN LIMITED
发明人： COHEN, Isaac
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M3/33507 , H02M3/33576 , H02M2001/0058 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491
摘要： In described examples of synchronous rectifiers and flyback converters (100), integrated circuits (101) and operating methods, a first switch (SI) is turned on to allow current to flow for a first time period (Tl) in a first direction in a transformer primary winding (108) responsive to a first switch voltage (VDSl) transitioning below a first threshold (VTHl), and a second switch (S2) is turned on for a second time period (T2) after the first time period (Tl) to transfer energy from a secondary transformer winding (122) to drive a load (125). In the same converter cycle, the second switch (S2) is again turned on for a third time period (T3) in response to a second switch voltage (VDS2) transitioning below a second threshold (VTH2) at one of a series of troughs of a resonant ringing voltage waveform across the second switch (S2), to cause current flow in a second direction in the primary winding (108) to discharge a capacitance (CSl) of the first switch (SI) to cause the first switch voltage (VDSl) to transition below the first threshold (VTHl) to initiate a subsequent converter cycle.
摘要翻译：在同步整流器和回扫转换器（100），集成电路（101）和操作方法的所描述的示例中，第一开关（SI）导通，以允许电流在第一方向上流过第一时间段（T1）变压器初级绕组（108）响应第一开关电压（VDS1）转变到第一阈值（VTH1）以下，第二开关（S2）在第一时间段（T1）之后接通第二时间段（T2）以从次级变压器绕组（122）传递能量以驱动负载（125）。在相同的转换器周期中，第二开关（S2）响应于第二开关电压（VDS2）在一系列波谷（VTH2）中的一个的一个槽中转变为低于第二阈值（VTH2）而再次导通第三时间段在第二开关（S2）两端的谐振振铃电压波形，以使初级绕组（108）中的第二方向的电流流过，以释放第一开关（S1）的电容（CS1），以使第一开关电压（VDS1 ）转换到低于第一阈值（VTH1）以启动随后的转换器周期。

2. 发明申请

WO2014194214A1 AC-DC CONVERTER HAVING SOFT-SWITCHED TOTEM-POLE OUTPUT 审中-公开
标题翻译：交直流转换器，具有软开关输出端子输出
公开(公告)号：WO2014194214A1
公开(公告)日：2014-12-04
申请号：PCT/US2014/040267
申请日：2014-05-30
申请人： TEXAS INSTRUMENTS INCORPORATED , TEXAS INSTRUMENTS JAPAN LIMITED
发明人： COHEN, Isaac
IPC分类号： H02M7/217 , H02M1/42
CPC分类号： H02M7/217 , H02M2001/0009 , H02M2001/0058 , Y02B70/1491
摘要： In described examples, an AC-DC converter (100) includes a totem-pole output circuit having first and second semiconductor switches (Q1, Q2), each having a channel coupled to a switching node (SW) and having a parasitic capacitance (Cds1, Cds2) associated with the channel. An inductor (Lboost) has one terminal thereof connected to a switching node (SW). First and second bypass devices (SRI, SR2) are coupled to a second terminal of the inductor (Lboost) and are operable during at least portions of cycles of an input voltage (Vline) to allow reverse current from an output of the converter (100) to generate soft-switching of the first and second semiconductor switches (Q1, Q2).
摘要翻译：在所描述的示例中，AC-DC转换器（100）包括具有第一和第二半导体开关（Q1，Q2）的图腾柱输出电路，每个具有耦合到开关节点（SW）并具有寄生电容（Cds1 ，Cds2）。电感器（Lboost）具有一个端子连接到开关节点（SW）。第一和第二旁路装置（SRI，SR2）耦合到电感器（Lboost）的第二端子，并且可在至少部分输入电压（Vline）的周期期间操作以允许来自转换器（100）的输出的反向电流）以产生第一和第二半导体开关（Q1，Q2）的软开关。

3. 发明申请

WO2018027038A1 PSEUDO CURRENT TRACKING FOR POWER SUPPLY REGULATION 审中-公开
标题翻译： PSEUDO电流跟踪电源调节
公开(公告)号：WO2018027038A1
公开(公告)日：2018-02-08
申请号：PCT/US2017/045308
申请日：2017-08-03
申请人： TEXAS INSTRUMENTS INCORPORATED , TEXAS INSTRUMENTS JAPAN LIMITED
发明人： COHEN, Isaac
IPC分类号： G05F1/46 , H02M3/00
摘要： In described examples, a power supply circuit (100) includes a regulation circuit (110) that receives an input voltage (VIN) and provides a regulated output voltage (VOUT) based on the input voltage (VIN). The regulation circuit (110) includes a switch device (120) having a switched output (122) that generates a ripple current waveform in a current regulator (124) to provide the regulated output voltage (VOUT). A control circuit (130) includes a pseudo current tracker (PCT) (134) that is operatively coupled to the regulation circuit (110). The PCT (134) receives a reference voltage (VREF) and generates a ripple voltage waveform that is proportional to the ripple current waveform. The control circuit (130) commands the switch device (120) to generate the ripple current waveform based on the ripple voltage waveform such that the regulated output voltage (VOUT) approximates the reference voltage (VREF).
摘要翻译：在所描述的示例中，电源电路（100）包括调节电路（110），该调节电路接收输入电压（VIN）并且基于输入电压（VIN）提供调节后的输出电压（VOUT））。调节电路（110）包括具有在电流调节器（124）中生成纹波电流波形以提供经调节的输出电压（VOUT）的开关输出（122）的开关装置（120）。控制电路（130）包括可操作地耦合到调节电路（110）的伪电流跟踪器（PCT）（134）。 PCT（134）接收参考电压（VREF）并且生成与纹波电流波形成比例的纹波电压波形。控制电路（130）命令开关装置（120）基于纹波电压波形生成纹波电流波形，使得调节后的输出电压（VOUT）接近参考电压（VREF）。

4. 发明申请

WO2015031534A1 METHOD AND APPARATUS FOR CALCULATING AN AVERAGE VALUE OF AN INACCESSIBLE CURRENT FROM AN ACESSIBLE CURRENT 审中-公开
标题翻译：用于计算不可逆电流的不确定电流的平均值的方法和装置
公开(公告)号：WO2015031534A1
公开(公告)日：2015-03-05
申请号：PCT/US2014/053004
申请日：2014-08-27
申请人： TEXAS INSTRUMENTS INCORPORATED , TEXAS INSTRUMENTS JAPAN LIMITED
发明人： COHEN, Isaac
IPC分类号： G05F1/46 , H02M1/08
CPC分类号： H05B33/0815 , G01R19/003 , G01R19/0038 , H02M1/08 , H02M1/088 , H02M3/156 , H02M3/1582 , H02M3/33507 , H02M3/33546 , H02M2001/0006 , H02M2001/0009 , H05B33/083 , H05B33/0845
摘要： In described examples, for operating a dimmable LED (1112), an LED driver circuit (1100) is coupled to a rectified output of AC dimmer (1102). A current (Iref) is related to an input voltage (Vin) of the LED driver circuit (1100). The value of the current (Iref) is multiplied by the input voltage (Vin) and a duty cycle of the LED driver circuit (1100) to generate a first voltage. The first voltage is compared with a voltage representative of current through a switch (1116) in the LED driver circuit (1100) to generate a comparison signal (PWM COMP). The comparison signal (PWM COMP) is used to generate a pulse width modulation (PWM) signal (D) for controlling the switch (1116) and the multiplication to drive the LED (1112).
摘要翻译：在所描述的示例中，为了操作可调光LED（1112），LED驱动器电路（1100）耦合到AC调光器（1102）的整流输出。电流（Iref）与LED驱动电路（1100）的输入电压（Vin）有关。将电流（Iref）的值乘以LED驱动器电路（1100）的输入电压（Vin）和占空比以产生第一电压。将第一电压与代表通过LED驱动电路（1100）中的开关（1116）的电流的电压进行比较，以产生比较信号（PWM COMP）。比较信号（PWM COMP）用于产生用于控制开关（1116）的脉宽调制（PWM）信号（D）和乘法驱动LED（1112）。

5. 发明申请

WO2011137424A2 SYSTEM AND METHODS FOR PROVIDING EQUAL CURRENTS TO CURRENT DRIVEN LOADS 审中-公开
标题翻译：用于向当前驱动负载提供均衡电流的系统和方法
公开(公告)号：WO2011137424A2
公开(公告)日：2011-11-03
申请号：PCT/US2011/034760
申请日：2011-05-02
申请人： TEXAS INSTRUMENTS INCORPORATED , TEXAS INSTRUMENTS JAPAN LIMITED , COHEN, Isaac
发明人： COHEN, Isaac
IPC分类号： H05B37/02
CPC分类号： H05B33/0815 , H02M3/33561 , Y02B20/347 , Y10T307/406
摘要： Systems and methods are provided for providing a substantially constant and equal current to a plurality of current driven loads (LED STRING #1 - LED STRING #N). In one embodiment, a system (20) is provided that comprises a plurality of current regulated outputs (OUTPUT #1 - OUTPUT #N) and a plurality of current driven loads (LED STRING #1 - LED STRING #N). The plurality of current regulated outputs and the plurality of current driven loads are arranged in a single current loop configuration with a respective current regulated output providing an output voltage (VOUT #1 - VOUT #N) to a respective current driven load of the plurality of current driven loads.
摘要翻译：提供的系统和方法用于向多个电流驱动负载（LED STRING＃1 - LED STRING #N）提供基本恒定和相等的电流。在一个实施例中，提供了一种系统（20），其包括多个电流调节输出（OUTPUT＃1-OUTPUT＃N）和多个电流驱动负载（LED STRING＃1 - LED STRING #N）。多个电流调节输出和多个电流驱动负载被布置成单个电流回路配置，其中相应的电流调节输出向多个电流驱动负载的相应电流驱动负载提供输出电压（VOUT＃1 -VOUT #N）电流驱动负载。

6. 发明申请

WO2022011137A1 POWER SUPPLY SYSTEM 审中-公开
公开(公告)号：WO2022011137A1
公开(公告)日：2022-01-13
申请号：PCT/US2021/040887
申请日：2021-07-08
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： COHEN, Isaac
IPC分类号： H02M9/04 , H02M1/08 , H02J3/00 , H02M3/01 , H02M3/33573 , H02M3/33592
摘要： A circuit (100) includes a transformer (104) having first and second transformer inputs and first and second transformer outputs. The first transformer output can be adapted to be coupled through a capacitor to a first input of an output stage (106). The second transformer output can be adapted to be coupled to a second input of the output stage (106). The circuit (100) also includes a switching system (102) having first and second inputs and first and second switching outputs. The first input can be configured to receive a switching signal. The second input can be configured to receive an input voltage. The first and second switching outputs respectively can be coupled to the first and second transformer inputs.

7. 发明申请

WO2017066254A1 ADAPTIVE BUS VOLTAGE AUTO-SELECTION SYSTEM 审中-公开
标题翻译：自适应总线电压自动选择系统
公开(公告)号：WO2017066254A1
公开(公告)日：2017-04-20
申请号：PCT/US2016/056548
申请日：2016-10-12
申请人： TEXAS INSTRUMENTS INCORPORATED , TEXAS INSTRUMENTS JAPAN LIMITED
发明人： COHEN, Isaac
IPC分类号： H02M7/12 , G05F1/10
CPC分类号： H02M1/10
摘要： In described examples, an adaptive bus voltage auto-selection system (10) includes an input bridge (12) configured to rectify an AC input line voltage to generate a DC bus voltage. The system (10) also includes a voltage monitor (14) configured to monitor an amplitude of the AC input line voltage and to generate an activation signal based on the amplitude of the AC input line voltage relative to a predetermined reference voltage. The system (10) further includes an anti-series transistor switch pair (16) that is controlled via the activation signal to selectively couple and decouple the input bridge (12) to an output stage (18) to provide the DC bus voltage at a first amplitude based on a first state of the activation signal and at a second amplitude based on a second state of the activation signal, respectively.
摘要翻译：在所描述的示例中，自适应总线电压自动选择系统（10）包括被配置为对AC输入线电压进行整流以生成DC总线电压的输入桥（12）。系统（10）还包括电压监测器（14），该电压监测器被配置为监测AC输入线电压的幅度并且基于AC输入线电压相对于预定参考电压的幅度产生激活信号。该系统（10）还包括反串联晶体管开关对（16），该反串联晶体管开关对经由激活信号被控制以选择性地将输入电桥（12）耦合和去耦合到输出级（18），以在第一幅度分别基于激活信号的第一状态和第二幅度基于激活信号的第二状态。

8. 发明申请

WO2012149518A2 POWER CONVERSION SYSTEM AND METHOD 审中-公开
标题翻译：电力转换系统和方法
公开(公告)号：WO2012149518A2
公开(公告)日：2012-11-01
申请号：PCT/US2012/035751
申请日：2012-04-30
申请人： TEXAS INSTRUMENTS INCORPORATED , TEXAS INSTRUMENTS JAPAN LIMITED , COHEN, Isaac
发明人： COHEN, Isaac
IPC分类号： H02M3/28 , H02M1/42
CPC分类号： H02M3/33507 , H02M3/156 , H02M2001/0009
摘要： A power conversion system (10) includes a converter (12) configured to convert an input voltage (VIN) to an output voltage (VOUT). The converter includes a switch (14) that is controlled in response to an activation signal (ACT) to provide current through an inductor (16). A transition mode controller (18) provides the activation signal (ACT) based on a measure of charge derived from current through the switch and based on the current through the inductor.
摘要翻译：电力转换系统（10）包括被配置为将输入电压（VIN）转换为输出电压（VOUT）的转换器（12）。转换器包括响应于激活信号（ACT）来控制以提供电流通过电感器（16）的开关（14）。过渡模式控制器（18）基于从通过开关的电流导出的电荷的量度，并且基于通过电感器的电流来提供激活信号（ACT）。

9. 发明申请

WO2016069945A1 SYNCHRONOUS RECTIFIER DRIVE AND SOFT SWITCHING CIRCUIT 审中-公开
标题翻译：同步整流器驱动和软开关电路
公开(公告)号：WO2016069945A1
公开(公告)日：2016-05-06
申请号：PCT/US2015/058151
申请日：2015-10-29
申请人： TEXAS INSTRUMENTS INCORPORATED , TEXAS INSTRUMENTS JAPAN LIMITED
发明人： COHEN, Isaac
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M3/33592 , H02M2001/0009 , H02M2001/0058 , Y02B70/1475 , Y02B70/1491
摘要： In described examples, a circuit (100) includes a synchronous rectifier (120) that receives an alternating current (AC) voltage from a transformer secondary (110) and provides a rectified direct current (DC) output voltage (VOUT) in response to a control input signal. A secondary rectifier switching circuit (130) generates the control input signal. A current replica circuit (134) generates a control voltage that replicates a current in the transformer secondary (110). The control voltage is employed to control switching of the secondary rectifier switching circuit (130) based on the current in the transformer secondary (110). An offset circuit (144) forces the control voltage in a predetermined direction to mitigate voltage error accumulations in the current replica circuit (134). A clamp circuit (150) limits the control voltage to a predetermined voltage value.
摘要翻译：在所描述的示例中，电路（100）包括同步整流器（120），其从变压器次级（110）接收交流电（AC）电压，并且响应于所述的整流的直流（DC）输出电压（VOUT）控制输入信号。次级整流器开关电路（130）产生控制输入信号。当前复制电路（134）产生复制变压器次级（110）中的电流的控制电压。控制电压用于基于变压器次级（110）中的电流来控制次级整流器开关电路（130）的开关。偏移电路（144）强制控制电压在预定方向上以减轻当前复制电路（134）中的电压误差累积。钳位电路（150）将控制电压限制在预定的电压值。

10. 发明申请

WO2015050810A1 INTERLEAVED FORWARD CONVERTER WITH WIDE INPUT AND OUTPUT DYNAMIC RANGE 审中-公开
标题翻译：具有宽输入和输出动态范围的交互式前向转换器
公开(公告)号：WO2015050810A1
公开(公告)日：2015-04-09
申请号：PCT/US2014/057998
申请日：2014-09-29
申请人： TEXAS INSTRUMENTS INCORPORATED , TEXAS INSTRUMENTS JAPAN LIMITED
发明人： COHEN, Isaac
IPC分类号： H02M3/337
CPC分类号： H02M3/33546 , H02M3/285 , H02M3/33538 , H02M3/33569
摘要： In described examples of an interleaved forward voltage converter (400), a first inverter stage includes a first transformer (T1) having a turns ratio N1and a primary winding (410) having one terminal coupled to a source of input voltage (Vin) and another terminal coupled to a first switching transistor (Q1). A first secondary winding (412) for the first transformer (T1) has a first terminal coupled to a first terminal of a filter inductor (Lf), and a second terminal coupled to a first diode (Df1). A second converter stage includes a second transformer (T2) having a turns ratio N2 and a primary winding having one terminal coupled to the source of input voltage (Vin) and another terminal coupled to a second switching transistor (Q2). A second secondary winding (416) for the second transformer (T2) has a first terminal coupled to the first terminal of the filter inductor (Lf) through a second diode (Df2), and a second terminal coupled to a reference voltage source. A third diode (Ds) is coupled between the first terminal of the second secondary winding (416) for the second transformer (T2) and the second terminal of the first secondary winding (412) of the first transformer (T1).
摘要翻译：在交错正向电压转换器（400）的所述示例中，第一反相器级包括具有匝数比N1的第一变压器（T1）和具有耦合到输入电压源（Vin）的一端的另一端的初级绕组（410）端子耦合到第一开关晶体管（Q1）。用于第一变压器（T1）的第一次级绕组（412）具有耦合到滤波电感器（Lf）的第一端子的第一端子和耦合到第一二极管（Df1）的第二端子。第二转换器级包括具有匝数比N2的第二变压器（T2）和具有耦合到输入电压源（Vin）的一个端子和耦合到第二开关晶体管（Q2）的另一个端子的初级绕组。用于第二变压器（T2）的第二次级绕组（416）具有通过第二二极管（Df2）耦合到滤波电感器（Lf）的第一端子的第一端子，以及耦合到参考电压源的第二端子。第三二极管（Ds）耦合在第二变压器（T2）的第二次级绕组（416）的第一端子和第一变压器（T1）的第一次级绕组（412）的第二端子之间。

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