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1. 发明申请

US20060158169A1 Method for starting a voltage-mode switching power supply into a biased load 有权
标题翻译：将电压模式开关电源启动到偏置负载的方法
公开(公告)号：US20060158169A1
公开(公告)日：2006-07-20
申请号：US11035908
申请日：2005-01-14
申请人： Bruce Inn , Ramesh Selvaraj
发明人： Bruce Inn , Ramesh Selvaraj
IPC分类号： G05F1/40 , G05F1/618
CPC分类号： H02M1/36 , Y10S323/901
摘要： A method for starting up a voltage-mode switching power supply into a biased load includes computing a ratio of the load voltage at the biased load to an input voltage of the switching power supply, generating a first signal indicative of the duty cycle of the voltage-mode switching power supply, comparing the first signal indicative of the duty cycle to the ratio, and turning on an output stage of the voltage-mode switching power supply only when the first signal indicative of the duty cycle is equal to the ratio. In this manner, the voltage-mode switching power supply can be started up to supply power to a biased load without dragging down the load voltage of the biased load.
摘要翻译：用于将电压模式开关电源启动到偏置负载的方法包括计算偏置负载处的负载电压与开关电源的输入电压的比率，产生指示电压的占空比的第一信号模式开关电源，将表示占空比的第一信号与比率进行比较，仅在表示占空比的第一信号等于该比率时，接通电压模式开关电源的输出级。以这种方式，可以启动电压模式开关电源，以向负载负载供电，而不会降低偏置负载的负载电压。

2. 发明申请

US20050035748A1 SELECTIVE HIGH-SIDE AND LOW-SIDE CURRENT SENSING IN SWITCHING POWER SUPPLIES 有权
标题翻译：切换电源中选择性高边和低端电流传感
公开(公告)号：US20050035748A1
公开(公告)日：2005-02-17
申请号：US10639066
申请日：2003-08-11
申请人： Bruce Inn
发明人： Bruce Inn
IPC分类号： H02M3/158 , G05F1/40
CPC分类号： H02M3/1588 , H02M2001/0009 , Y02B70/1466
摘要： A current mode switching regulator implementing a dual sense scheme includes a first current sensing circuit for sensing a current through a first switch and providing a first current sense signal, and a second current sensing circuit for sensing a current through a second switch and providing a second current sense signal. The switching regulator includes a control circuit for generating switch control signals for driving the first and second switches in response to one of the first and second current sense signals. The regulator further includes a duty cycle detection circuit coupled to determine a duty cycle of the switching regulator. The detection circuit asserts a first select signal to select the first current sense signal when the duty cycle exceeds a first threshold level and asserts a second select signal to select the second current sense signal when the duty cycle is less than a second threshold level.
摘要翻译：实现双重感测方案的电流模式开关调节器包括用于感测通过第一开关的电流并提供第一电流感测信号的第一电流感测电路和用于感测通过第二开关的电流的第二电流感测电路，电流检测信号。开关调节器包括用于响应于第一和第二电流检测信号中的一个产生用于驱动第一和第二开关的开关控制信号的控制电路。该调节器还包括一个占空比检测电路，其耦合以确定开关调节器的占空比。当占空比超过第一阈值电平时，检测电路断言第一选择信号以选择第一电流检测信号，并且当占空比小于第二阈值电平时，断言第二选择信号以选择第二电流检测信号。

3. 发明申请

US20060158165A1 Dual mode buck regulator with improved transition between LDO and PWM operation 有权
标题翻译：双模式降压稳压器，具有改善LDO和PWM操作之间的转换
公开(公告)号：US20060158165A1
公开(公告)日：2006-07-20
申请号：US11038547
申请日：2005-01-18
申请人： Bruce Inn , Ioan Stoichita
发明人： Bruce Inn , Ioan Stoichita
IPC分类号： G05F1/56 , G05F1/618
CPC分类号： G05F1/575 , H02M1/36 , H02M3/1588 , H02M2001/0025 , H02M2001/0032 , H02M2001/0045 , Y02B70/1466 , Y02B70/16
摘要： A dual mode regulator, having a high current PWM regulator mode and a low current LDO regulator mode, briefly changes the operating parameters of the PWM and LDO regulators during a transition between modes. Changes during the transition period include: raising the error amplifier reference voltage of the LDO or PWM regulator to ensure a definite handover, raising the bias current in the LDO stages during the transition to cause the LDO regulator to quickly and stably respond to voltage glitches, and augmenting the LDO regulator series pass transistors with one or more additional pass transistors during the transition to enable the LDO regulator to handle higher currents. After the transition, the operating parameters of the enabled regulator portion are reset to their nominal values. The PWM regulator is started with a soft start routine to limit current through the power transistor. If the PWM regulator uses a synchronous rectifier, a reverse current limiting circuit is preferably used to limit reverse current when the PWM regulator is starting up to avoid loading down the LDO regulator.
摘要翻译：具有高电流PWM调节器模式和低电流LDO稳压器模式的双模式调节器在模式之间的转换期间，会简单地更改PWM和LDO稳压器的工作参数。过渡期间的变化包括：提高LDO或PWM调节器的误差放大器参考电压，以确保切换，确保转换期间LDO级中的偏置电流，使LDO稳压器快速稳定地响应电压毛刺，并且在转变期间增加LDO调节器串联传输具有一个或多个附加传输晶体管的晶体管，以使LDO调节器能够处理更高的电流。转换后，使能稳压器部分的工作参数被复位到其标称值。 PWM调节器通过软启动程序启动，以限制通过功率晶体管的电流。如果PWM调节器使用同步整流器，则优选使用反向限流电路来限制PWM调节器启动时的反向电流，以避免降低LDO稳压器。

4. 发明申请

US20050275290A1 ELIMINATION OF RECIRCULATION CURRENT LOSS IN LOAD-SHARED SWITCHING MODE POWER SUPPLIES 有权
标题翻译：负荷共享切换模式电源消除电流损耗
公开(公告)号：US20050275290A1
公开(公告)日：2005-12-15
申请号：US10864014
申请日：2004-06-09
申请人： Bruce Inn , Ramesh Selvaraj
发明人： Bruce Inn , Ramesh Selvaraj
IPC分类号： H02M7/21 , H02J1/10 , H02M3/00 , H02M3/155 , H02M3/158 , H02J1/12
CPC分类号： H02J1/102 , H02M3/1584 , Y10T307/352 , Y10T307/565
摘要： In master-slave current-tracking load-share systems using switching power supplies, a method and apparatus for preventing current recirculation at light-load and no-load operational conditions. The slave power supply is run in a discontinuous mode when load current falls to light-load or no-load state, preventing the slave from sinking current, therefore preventing recirculation from the master to the slave. The slave power supply is run at a lower current level than the master, preventing recirculation from the slave to the master.
摘要翻译：在使用开关电源的主从电流跟踪负载共享系统中，用于在轻负载和空载操作条件下防止电流再循环的方法和装置。当负载电流下降到轻负载或无负载状态时，从电源以不连续模式运行，从而防止从器件陷入电流，从而防止从主器件到从器件的再循环。从电源以比主机低的电流运行，防止从从机向主机的再循环。

5. 发明授权

US07002263B2 Elimination of recirculation current loss in load-shared switching mode power supplies 有权
标题翻译：消除负载共享开关模式电源中的再循环电流损耗
公开(公告)号：US07002263B2
公开(公告)日：2006-02-21
申请号：US10864014
申请日：2004-06-09
申请人： Bruce Inn , Ramesh Selvaraj
发明人： Bruce Inn , Ramesh Selvaraj
IPC分类号： H02J1/12
CPC分类号： H02J1/102 , H02M3/1584 , Y10T307/352 , Y10T307/565
摘要： In master-slave current-tracking load-share systems using switching power supplies, a method and apparatus for preventing current recirculation at light-load and no-load operational conditions. The slave power supply is run in a discontinuous mode when load current falls to light-load or no-load state, preventing the slave from sinking current, therefore preventing recirculation from the master to the slave. The slave power supply is run at a lower current level than the master, preventing recirculation from the slave to the master.
摘要翻译：在使用开关电源的主从电流跟踪负载共享系统中，用于在轻负载和空载操作条件下防止电流再循环的方法和装置。当负载电流下降到轻负载或无负载状态时，从电源以不连续模式运行，从而防止从器件陷入电流，从而防止从主器件到从器件的再循环。从电源以比主机低的电流运行，防止从从机向主机的再循环。

6. 发明申请

US20050046401A1 Compensator to achieve constant bandwidth in a switching regulator 有权
标题翻译：补偿器在开关稳压器中实现恒定带宽
公开(公告)号：US20050046401A1
公开(公告)日：2005-03-03
申请号：US10652347
申请日：2003-08-29
申请人： Bruce Inn , Chuck Vinn
发明人： Bruce Inn , Chuck Vinn
IPC分类号： H02M3/156 , G05F1/40
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A switching regulator includes a compensation circuit for applying a scaling factor to the loop gain of the feedback control loop of the regulator. In operation, the loop gain of the feedback control loop has a dependency on the input and output voltages of the switching regulator. The compensation circuit applies a function as the scaling factor where the function is a reciprocal function of the loop gain dependency on the input voltage and output voltage. In one embodiment, the loop gain has a dependency on the ratio VIN/VOUT and a scaling factor having a value indicative of the ratio VOUT/VIN is applied by the compensation circuit. In one embodiment, the compensation circuit is coupled in series with the output circuit of an error amplifier in the feedback control loop of the regulator. In another embodiment, the compensation circuit is subsumed within the circuitry of the error amplifier.
摘要翻译：开关调节器包括用于将调节因子应用于调节器的反馈控制环路的环路增益的补偿电路。在操作中，反馈控制环路的环路增益与开关稳压器的输入和输出电压有关。补偿电路作为缩放因子应用函数，其中函数是对输入电压和输出电压的环路增益依赖性的互逆函数。在一个实施例中，环路增益与VIN / VOUT比率有关，并且具有表示补偿电路施加的比VOUT / VIN的值的比例因子。在一个实施例中，补偿电路与调节器的反馈控制环路中的误差放大器的输出电路串联耦合。在另一个实施例中，补偿电路被包含在误差放大器的电路内。

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