公开(公告)号：WO2012102951A3

公开(公告)日：2013-06-27

申请号：PCT/US2012021971

申请日：2012-01-20

Applicant: MICROCHIP TECH INC ,  WILLIAMS MATTHEW ,  LEONESCU DANIEL ,  DEARBORN SCOTT ,  ALBRECHT CHRISTIAN

Inventor： WILLIAMS MATTHEW ,  LEONESCU DANIEL ,  DEARBORN SCOTT ,  ALBRECHT CHRISTIAN

IPC: G05F1/573

CPC classification number: G05F1/5735

Abstract: A voltage regulator has a regulated output voltage that is maintained up to a current limit, Ilimit, then as the load continues to decrease in resistance (impedance) the 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: lout = Vout/ZLoad- When the output voltage starts dropping 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 resistance (impedance) begins to increase so will the output voltage and thus output 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.

Abstract translation: 电压调节器具有稳定的输出电压，其维持在电流限制Ilimit，然后随着负载在电阻（阻抗）中继续减小，电流不会超过电流限制Ilimit，而是输出电压降低 输出电流也减小到满足欧姆定律：lout = Vout / ZLoad-当电流限制从输出电压开始下降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 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时，输出电压降低。 当负载电阻（阻抗）开始增加时，输出电压和输出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。

公开(公告)号：WO2012102951A2

公开(公告)日：2012-08-02

申请号：PCT/US2012/021971

申请日：2012-01-20

Applicant: MICROCHIP TECHNOLOGY INCORPORATED ,  WILLIAMS, Matthew ,  LEONESCU, Daniel ,  DEARBORN, Scott ,  ALBRECHT, Christian

Inventor： WILLIAMS, Matthew ,  LEONESCU, Daniel ,  DEARBORN, Scott ,  ALBRECHT, Christian

IPC: G05F1/10

CPC classification number: G05F1/5735

Abstract: A voltage regulator has a regulated output voltage that is maintained up to a current limit, I limit , then as the load continues to decrease in resistance (impedance) the current does not increase past the current limit, I limit , but rather the output voltage decreases forcing the output current to also decrease to satisfy Ohm's Law: l out = V out /Z Load - When the output voltage starts dropping 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, I foldback , at an output voltage of substantially zero volts. As the load resistance (impedance) begins to increase so will the output voltage and thus output 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, I limit .

Abstract translation: 电压调节器具有稳定的输出电压，其维持在电流限制Ilimit，然后随着负载在电阻（阻抗）中继续减小，电流不会超过电流限制Ilimit，而是输出电压降低 输出电流也减小到满足欧姆定律：lout = Vout / ZLoad-当电流限制从输出电压开始下降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 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时，输出电压降低。 当负载电阻（阻抗）开始增加时，输出电压和输出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。

公开(公告)号：WO2011094477A3

公开(公告)日：2011-11-24

申请号：PCT/US2011022837

申请日：2011-01-28

Applicant: MICROCHIP TECH INC ,  DEVAL PHILIPPE ,  GIMMEL PHILIPPE ,  BUDAES MARIUS ,  LEONESCU DANIEL ,  CLEVELAND TERRY ,  DEARBORN SCOTT

Inventor： DEVAL PHILIPPE ,  GIMMEL PHILIPPE ,  BUDAES MARIUS ,  LEONESCU DANIEL ,  CLEVELAND TERRY ,  DEARBORN SCOTT

IPC: H02M3/158 ,  G01R19/00

CPC classification number: H02M3/158 ,  G01R19/0092 ,  H02M2001/0009

Abstract: 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.

Abstract translation: 高压开关稳压器在测量输入电流和产生感测电流值之间显着降低了电流感测延迟，同时通过使用电流复制和电流传送器保持通过功率晶体管的电流的高精度。 输入电流的高检测精度确保良好的负载调整率，低感应延迟确保在宽范围的输出电流和高输入输出电压比下的固定占空比。 电流传送器用于将高侧电流值传送到低侧控制电路，例如脉宽调制（PWM）控制。 电流传送器始终打开，例如，总是存在一些电流，从而使任何电流测量延迟最小化。 这是通过将电流传送器通过消耗等于感测电流的电流而动态偏置来实现的。 其中确保电流传送器的平衡并且使电流传送器的输入处的偏移最小化。

公开(公告)号：WO2011094477A2

公开(公告)日：2011-08-04

申请号：PCT/US2011/022837

申请日：2011-01-28

Applicant: MICROCHIP TECHNOLOGY INCORPORATED ,  DEVAL, Philippe ,  GIMMEL, Philippe ,  BUDAES, Marius ,  LEONESCU, Daniel ,  CLEVELAND, Terry ,  DEARBORN, Scott

Inventor： DEVAL, Philippe ,  GIMMEL, Philippe ,  BUDAES, Marius ,  LEONESCU, Daniel ,  CLEVELAND, Terry ,  DEARBORN, Scott

IPC: G05F1/618

CPC classification number: H02M3/158 ,  G01R19/0092 ,  H02M2001/0009

Abstract: 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.

Abstract translation: 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。