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1. 发明授权

US08841897B2 Voltage regulator having current and voltage foldback based upon load impedance 有权
标题翻译：电压调节器具有基于负载阻抗的电流和电压折返
公开(公告)号：US08841897B2
公开(公告)日：2014-09-23
申请号：US13353995
申请日：2012-01-19
申请人： Matthew Williams , Daniel Leonescu , Scott Dearborn , Christian Albrecht
发明人： Matthew Williams , Daniel Leonescu , Scott Dearborn , Christian Albrecht
IPC分类号： G05F1/10 , G05F1/573
CPC分类号： G05F1/5735
摘要： The regulated output voltage of a voltage regulator is maintained up to a current limit, Ilimit, then as the load impedance continues to decrease the output current does not increase past the current limit, Ilimit, but rather the output voltage decreases forcing the output current to also decrease to satisfy Ohm's Law: IOUT=VOUT/ZLoad. When the output voltage drops below the regulated voltage value because of current limiting the voltage regulator shifts from a current limit mode to a current foldback mode wherein the output current decreases with the decrease in output voltage until the output current reaches a current foldback minimum, Ifoldback, at an output voltage of substantially zero volts. As the load impedance increases so will the output voltage and current until the output voltage is back at substantially the regulation voltage value, and the output current is less than or equal to the current limit, Ilimit.
摘要翻译：电压调节器的稳压输出电压保持在电流限制Ilimit，因此当负载阻抗持续降低时，输出电流不会超过电流限制Ilimit，而是输出电压降低迫使输出电流也降低到符合欧姆定律：IOUT = VOUT / ZLoad。当输出电压由于电流限制而降低到调节电压值以下时，电压调节器从电流限制模式转换到电流折返模式，其中输出电流随着输出电压的降低而减小，直到输出电流达到当前折返最小值Ifoldback ，输出电压基本为零伏特。当负载阻抗增加时，输出电压和电流将直到输出电压恢复到基本上的调节电压值，并且输出电流小于或等于电流限制Ilimit。

2. 发明申请

US20110187340A1 EFFECTIVE CURRENT SENSING FOR HIGH VOLTAGE SWITCHING REGULATORS 失效
标题翻译：高电压开关稳压器的有效电流检测
公开(公告)号：US20110187340A1
公开(公告)日：2011-08-04
申请号：US12985746
申请日：2011-01-06
申请人： Philippe Deval , Philippe Gimmel , Marius Budaes , Daniel Leonescu , Terry Cleveland , Scott Dearborn
发明人： Philippe Deval , Philippe Gimmel , Marius Budaes , Daniel Leonescu , Terry Cleveland , Scott Dearborn
IPC分类号： G05F1/618
CPC分类号： H02M3/158 , G01R19/0092 , H02M2001/0009
摘要： A high voltage switching regulator has significantly reduced current sensing delay between measurement of input current and generation of sensed current values, while maintaining good accuracy of the current through a power transistor using current replication and a current conveyor. High sensing accuracy of the input current ensures good load regulation, and low sensing delay ensures fixed duty cycle over a wide range of output currents and high input to output voltage ratios. A current conveyor is used to transfer high side current values to low side control circuits, e.g., pulse width modulation (PWM) control. The current conveyor is always on, e.g., some current flow is always present, thus minimizing any current measurement delay. This is accomplished by dynamically biasing the current conveyor by draining to ground a current equal to the sensed current. Wherein balancing of the current conveyor is ensured and offset at the input of the current conveyor is minimized.
摘要翻译：高电压开关调节器在测量输入电流和产生感应电流值之间大大减少了电流检测延迟，同时通过使用电流复制和电流输送机的功率晶体管保持了良好的电流精度。输入电流的高感测精度确保良好的负载调节，并且低感测延迟确保在宽范围的输出电流和高输入到输出电压比下的固定占空比。目前的输送机用于将高侧电流值传送到低端控制电路，例如脉冲宽度调制（PWM）控制。当前的输送机总是打开，例如，一直存在一些电流，从而最小化任何电流测量延迟。这是通过将等于感测电流的电流通过引流接地来动态地偏置当前输送机来实现的。其中确保了当前输送机的平衡，并且在当前输送机的输入处的偏移被最小化。

3. 发明授权

US08786266B2 Effective current sensing for high voltage switching regulators 失效
标题翻译：高电压开关稳压器的有效电流检测
公开(公告)号：US08786266B2
公开(公告)日：2014-07-22
申请号：US12985746
申请日：2011-01-06
申请人： Philippe Deval , Philippe Gimmel , Marius Budaes , Daniel Leonescu , Terry Cleveland , Scott Dearborn
发明人： Philippe Deval , Philippe Gimmel , Marius Budaes , Daniel Leonescu , Terry Cleveland , Scott Dearborn
IPC分类号： G05F1/00
CPC分类号： H02M3/158 , G01R19/0092 , H02M2001/0009
摘要： A high voltage switching regulator has significantly reduced current sensing delay between measurement of input current and generation of sensed current values, while maintaining good accuracy of the current through a power transistor using current replication and a current conveyor. High sensing accuracy of the input current ensures good load regulation, and low sensing delay ensures fixed duty cycle over a wide range of output currents and high input to output voltage ratios. A current conveyor is used to transfer high side current values to low side control circuits, e.g., pulse width modulation (PWM) control. The current conveyor is always on, e.g., some current flow is always present, thus minimizing any current measurement delay. This is accomplished by dynamically biasing the current conveyor by draining to ground a current equal to the sensed current. Wherein balancing of the current conveyor is ensured and offset at the input of the current conveyor is minimized.
摘要翻译：高电压开关调节器在测量输入电流和产生感应电流值之间大大减少了电流检测延迟，同时通过使用电流复制和电流输送机的功率晶体管保持了良好的电流精度。输入电流的高感测精度确保良好的负载调节，并且低感测延迟确保在宽范围的输出电流和高输入到输出电压比下的固定占空比。目前的输送机用于将高侧电流值传送到低端控制电路，例如脉冲宽度调制（PWM）控制。当前的输送机总是打开，例如，一直存在一些电流，从而最小化任何电流测量延迟。这是通过将等于感测电流的电流通过引流接地来动态地偏置当前输送机来实现的。其中确保了当前输送机的平衡，并且在当前输送机的输入处的偏移被最小化。

4. 发明申请

US20120187930A1 VOLTAGE REGULATOR HAVING CURRENT AND VOLTAGE FOLDBACK BASED UPON LOAD IMPEDANCE 有权
标题翻译：具有基于负载阻抗的电流和电压回归的电压调节器
公开(公告)号：US20120187930A1
公开(公告)日：2012-07-26
申请号：US13353995
申请日：2012-01-19
申请人： Matthew Williams , Daniel Leonescu , Scott Dearborn , Christian Albrecht
发明人： Matthew Williams , Daniel Leonescu , Scott Dearborn , Christian Albrecht
IPC分类号： G05F1/10
CPC分类号： G05F1/5735
摘要： The regulated output voltage of a voltage regulator is maintained up to a current limit, Ilimit, then as the load impedance continues to decrease the output current does not increase past the current limit, Ilimit, but rather the output voltage decreases forcing the output current to also decrease to satisfy Ohm's Law: IOUT=VOUT/ZLoad. When the output voltage drops below the regulated voltage value because of current limiting the voltage regulator shifts from a current limit mode to a current foldback mode wherein the output current decreases with the decrease in output voltage until the output current reaches a current foldback minimum, Ifoldback, at an output voltage of substantially zero volts. As the load impedance increases so will the output voltage and current until the output voltage is back at substantially the regulation voltage value, and the output current is less than or equal to the current limit, Ilimit.
摘要翻译：电压调节器的稳压输出电压保持在电流限制Ilimit，因此当负载阻抗持续降低时，输出电流不会超过电流限制Ilimit，而是输出电压降低迫使输出电流也降低到符合欧姆定律：IOUT = VOUT / ZLoad。当输出电压由于电流限制而降低到调节电压值以下时，电压调节器从电流限制模式转换到电流折返模式，其中输出电流随着输出电压的降低而减小，直到输出电流达到当前折返最小值Ifoldback ，输出电压基本为零伏特。当负载阻抗增加时，输出电压和电流将直到输出电压恢复到基本上的调节电压值，并且输出电流小于或等于电流限制Ilimit。

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