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1.发明授权DC/DC voltage regulator with automatic current sensing selectability for linear and switch mode operation utilizing a single voltage reference 有权DC / DC电压调节器，具有自动电流检测选择性，用于使用单个参考电压的线性和开关模式操作公开(公告)号：US07880456B2
公开(公告)日：2011-02-01
申请号：US12724289
申请日：2010-03-15
申请人： Christopher T. Falvey , Andrew Wu
发明人： Christopher T. Falvey , Andrew Wu
IPC分类号： G05F1/618
CPC分类号： H02M3/158 , H02M2001/0009 , H02M2001/0045
摘要： A switch-mode DC/DC converter and a linear low drop out (LDO) DC/DC regulator are connected in parallel to drive a single load. Both regulators share a common voltage reference, feedback network, input supply and output such that the regulated voltage is identical during each mode of operation. During heavy loads the switch-mode regulator is in operation and the linear regulator is disabled for the highest efficiency possible. Conversely at light loads the linear regulator is in operation with the switch-mode regulator disabled, also maximizing the efficiency. Each regulator senses load current to automatically transition between the appropriate voltage regulators at fixed load current levels. The presented invention also includes a make before break transition scheme of the voltage regulators to minimize the voltage transients.
摘要翻译： 开关模式DC / DC转换器和线性低压降（LDO）DC / DC调节器并联连接以驱动单个负载。 两个稳压器都有一个共同的参考电压，反馈网络，输入电源和输出，使得每个工作模式下的稳压电压相同。 在重负载期间，开关模式稳压器处于工作状态，线性稳压器被禁用，以实现最高的效率。 相反，轻负载时，线性稳压器工作在禁用开关模式调节器的同时，也使效率最大化。 每个调节器感测负载电流，以在固定负载电流水平下自适应在适当的稳压器之间转换。 本发明还包括电压调节器的断开前转换方案以使电压瞬变最小化。
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2.发明申请DC/DC VOLTAGE REGULATOR WITH AUTOMATIC CURRENT SENSING SELECTABILITY FOR LINEAR AND SWITCH MODE OPERATION UTILIZING A SINGLE VOLTAGE REFERENCE 有权具有自动电流传感选择性的直流/直流电压调节器，用于线性和开关模式操作，使用单电压参考公开(公告)号：US20100231190A1
公开(公告)日：2010-09-16
申请号：US12724289
申请日：2010-03-15
申请人： Christopher T. Falvey , Andrew Wu
发明人： Christopher T. Falvey , Andrew Wu
IPC分类号： G05F1/10
CPC分类号： H02M3/158 , H02M2001/0009 , H02M2001/0045
摘要： A switch-mode DC/DC converter and a linear low drop out (LDO) DC/DC regulator are connected in parallel to drive a single load. Both regulators share a common voltage reference, feedback network, input supply and output such that the regulated voltage is identical during each mode of operation. During heavy loads the switch-mode regulator is in operation and the linear regulator is disabled for the highest efficiency possible. Conversely at light loads the linear regulator is in operation with the switch-mode regulator disabled, also maximizing the efficiency. Each regulator senses load current to automatically transition between the appropriate voltage regulators at fixed load current levels. The presented invention also includes a make before break transition scheme of the voltage regulators to minimize the voltage transients.
摘要翻译： 开关模式DC / DC转换器和线性低压降（LDO）DC / DC调节器并联连接以驱动单个负载。 两个稳压器都有一个共同的参考电压，反馈网络，输入电源和输出，使得每个工作模式下的稳压电压相同。 在重负载期间，开关模式稳压器处于工作状态，线性稳压器被禁用，以实现最高的效率。 相反，轻负载时，线性稳压器工作在禁用开关模式调节器的同时，也使效率最大化。 每个调节器感测负载电流，以在固定负载电流水平下自适应在适当的稳压器之间转换。 本发明还包括电压调节器的断开前转换方案以使电压瞬变最小化。
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3.发明授权DC/DC voltage regulator with automatic current sensing selectability for linear and switch mode operation utilizing a single voltage reference 有权DC / DC电压调节器，具有自动电流检测选择性，用于使用单个参考电压的线性和开关模式操作公开(公告)号：US07679350B2
公开(公告)日：2010-03-16
申请号：US10587785
申请日：2004-02-05
申请人： Christopher T. Falvey , Andrew Wu
发明人： Christopher T. Falvey , Andrew Wu
IPC分类号： G05F1/618
CPC分类号： H02M3/158 , H02M2001/0009 , H02M2001/0045
摘要： A switch-mode DC/DC converter (101) and linear low drop out (LIDO) DC/DC regulator (105) are connected in parallel to drive a single load Both regulators share a common voltage reference, feedback network (103), input supply and output such that the regulated voltage is identical during each mode of operation. During heavy loads the switch-mode regulator (107) is in operation and the linear regulator is disabled for the highest efficiency possible. Conversely at light loads the linear regulator is in operation with the switch-mode regulator (107) disabled, also maximizing the efficiency. Each regulator senses load current (131) to automatically transition between the appropriate voltage regulators at fixed load current levels. The presented invention also includes a make before break transition scheme of the voltage regulators (103) to minimize the voltage transients.
摘要翻译： 开关模式DC / DC转换器（101）和线性低压降（LIDO）DC / DC稳压器（105）并联连接以驱动单个负载。两个稳压器共享公共参考电压，反馈网络（103），输入 供应和输出，使得在每个操作模式期间调节电压相同。 在重负载期间，开关模式稳压器（107）处于工作状态，线性稳压器被禁用，以实现最高的效率。 相反，轻负载时，线性稳压器在开关模式稳压器（107）禁用的情况下运行，同时也使效率最大化。 每个调节器感测负载电流（131），以在固定负载电流水平下自适应在适当的电压调节器之间转换。 本发明还包括电压调节器（103）的断开前转换方案以最小化电压瞬变。
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4.发明授权Constant-peak-current minimum-off-time pulse frequency modulator for switching regulators 有权用于开关稳压器的恒峰值电流最小关断时间脉冲频率调制器公开(公告)号：US07439720B2
公开(公告)日：2008-10-21
申请号：US11509908
申请日：2006-08-25
CPC分类号： H02M3/156
摘要： Methods and apparatus are disclosed for controlling switching regulators to automatically switch from a traditional pulse-width modulation (PWM) mode, when the load current is higher than a predetermined value, to a pulse-frequency modulation (PFM) mode, when the load current drops to a point lower than the predetermine value. Switching modes increases the efficiency of the regulator when the load current is low without provoking a large output voltage transient. In some embodiments, a single switching cycle regulates the output in the PFM mode, which reduces the switching losses and enhances the efficiency of the regulator.
摘要翻译： 公开了用于当负载电流高于预定值时将控制开关调节器自动从传统脉宽调制（PWM）模式切换到脉冲 - 频率调制（PFM）模式的方法和装置，当负载电流 下降到低于预定值的点。 当负载电流低时，开关模式会提高调节器的效率，而不会引起大的输出电压瞬变。 在一些实施例中，单个开关周期调节PFM模式中的输出，这降低了开关损耗并提高了调节器的效率。
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5.发明授权Constant-peak-current minimum-off-time pulse frequency modulator for switching regulators 有权用于开关稳压器的恒峰值电流最小关断时间脉冲频率调制器公开(公告)号：US07116089B1
公开(公告)日：2006-10-03
申请号：US11261874
申请日：2005-10-28
IPC分类号： G05F1/613
CPC分类号： H02M3/156
摘要： Methods and apparatus are disclosed for controlling switching regulators to automatically switch from a traditional pulse-width modulation (PWM) mode, when the load current is higher than a predetermined value, to a pulse-frequency modulation (PFM) mode, when the load current drops to a point lower than the predetermine value. Switching modes increases the efficiency of the regulator when the load current is low without provoking a large output voltage transient. In some embodiments, a single switching cycle regulates the output in the PFM mode, which reduces the switching losses and enhances the efficiency of the regulator.
摘要翻译： 公开了用于当负载电流高于预定值时将控制开关调节器自动从传统脉宽调制（PWM）模式切换到脉冲 - 频率调制（PFM）模式的方法和装置，当负载电流 下降到低于预定值的点。 当负载电流低时，开关模式会提高调节器的效率，而不会引起大的输出电压瞬变。 在一些实施例中，单个开关周期调节PFM模式中的输出，这降低了开关损耗并提高了调节器的效率。
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