公开(公告)号：US08102162B2

公开(公告)日：2012-01-24

申请号：US12482818

申请日：2009-06-11

申请人： Zaki Moussaoui ,  Leigh Cormie ,  Jun Liu

发明人： Zaki Moussaoui ,  Leigh Cormie ,  Jun Liu

IPC分类号： G05F1/563

CPC分类号： H02M3/1582

摘要： An integrated circuit controller for controlling the operation of a voltage converter which includes a first comparator for comparing a voltage associated with an input of a boost converter with a threshold voltage and generating a control signal in response thereto. A second comparator compares a second voltage associated with an output of the boost converter with the threshold voltage and generates a second control signal in response thereto. Driver circuitry generates a first switching transistor drive signal and a second switching transistor drive signal. The first switching transistor drive signal is used for driving an upper gate switching transistor of a buck converter. The second switching transistor drive signal may be configured in a first mode of operation to drive a lower gate switching transistor of the buck converter and may be configured in a second mode of operation to drive a switching transistor of the boost converter. Control logic enables/disables at least a portion of the driver circuitry responsive to the control signal and the second control signal.

摘要翻译： 一种用于控制电压转换器的操作的集成电路控制器，其包括用于将与升压转换器的输入相关联的电压与阈值电压进行比较的第一比较器，并响应于此产生控制信号。 第二比较器将与升压转换器的输出相关联的第二电压与阈值电压进行比较，并响应于此产生第二控制信号。 驱动器电路产生第一开关晶体管驱动信号和第二开关晶体管驱动信号。 第一开关晶体管驱动信号用于驱动降压转换器的上栅极开关晶体管。 第二开关晶体管驱动信号可以被配置为第一操作模式以驱动降压转换器的下栅极开关晶体管，并且可以被配置为驱动升压转换器的开关晶体管的第二操作模式。 响应于控制信号和第二控制信号，控制逻辑启用/禁用至少一部分驱动器电路。

公开(公告)号：US08570006B2

公开(公告)日：2013-10-29

申请号：US13303702

申请日：2011-11-23

申请人： Zaki Moussaoui ,  Jun Liu

发明人： Zaki Moussaoui ,  Jun Liu

IPC分类号： G05F1/40

CPC分类号： H02M3/1582 ,  H02M2001/0003

摘要： A circuit, device, and method for controlling a buck-boost circuit includes a bootstrap capacitor voltage regulator circuit and a comparator circuit. The bootstrap capacitor voltage regulator circuit is electrically coupled to a buck-mode bootstrap capacitor of the buck-boost converter and to a boost-mode bootstrap capacitor of the buck-boost converter. The comparator circuit is configured to control the bootstrap capacitor voltage regulator circuit to maintain a voltage of the bootstrap capacitors above a reference threshold voltage by transferring an amount energy from one of the bootstrap capacitors to the other bootstrap capacitors based on the particular mode of operation of the buck-boost converter.

摘要翻译： 用于控制降压 - 升压电路的电路，装置和方法包括自举电容器电压调节器电路和比较器电路。 自举电容器电压调节器电路电耦合到降压 - 升压转换器的降压模式自举电容器和降压 - 升压转换器的升压模式自举电容器。 比较器电路被配置为通过基于特定的操作模式将自举电容器电压调节器电路保持自举电容器的电压高于参考阈值电压，通过从自举电容器中的一个向另一个自举电容器传输一定量的能量 降压 - 升压转换器。

公开(公告)号：US08552703B2

公开(公告)日：2013-10-08

申请号：US13109299

申请日：2011-05-17

申请人： Jun Liu ,  Zaki Moussaoui ,  Kenneth L. Lenk

发明人： Jun Liu ,  Zaki Moussaoui ,  Kenneth L. Lenk

IPC分类号： G05F1/00

CPC分类号： G05F1/56 ,  H02M3/1588 ,  H02M2001/0032 ,  H02M2001/0045 ,  Y02B70/1466 ,  Y02B70/16

摘要： A regulator controller which controls conversion of an input voltage to an output voltage, including a switching regulator, a low dropout (LDO) regulator, and a mode controller. The switching regulator develops a pulse control signal to regulate the output voltage when enabled. The LDO regulator also regulates the output voltage when enabled. The mode controller enables or disables the switching regulator and the LDO regulator based on a load condition. The switching regulator is enabled and the LDO regulator is disabled during normal operation. The LDO regulator is enabled when the low load condition is detected, such as a skipped pulse on the pulse control signal. The switching regulator is disabled when the pulse control signal reaches a minimum level. The LDO regulator is disabled and the switching regulator is re-enabled based on threshold conditions of the current output of the LDO regulator.

摘要翻译： 调节器控制器，其控制输入电压到输出电压的转换，包括开关稳压器，低压差（LDO）调节器和模式控制器。 开关稳压器产生脉冲控制信号，以便在使能时调节输出电压。 LDO调节器在使能时也调节输出电压。 模式控制器根据负载条件启用或禁用开关稳压器和LDO稳压器。 开关稳压器使能，LDO稳压器在正常工作期间被禁止。 当检测到低负载条件时，例如脉冲控制信号上的跳过脉冲，LDO稳压器被使能。 当脉冲控制信号达到最小电平时，开关稳压器被禁止。 LDO稳压器被禁止，并且基于LDO稳压器的电流输出的阈值条件重新使能开关稳压器。

公开(公告)号：US20110109346A1

公开(公告)日：2011-05-12

申请号：US12716654

申请日：2010-03-03

申请人： Zaki Moussaoui ,  Weihong Qiu ,  Jun Liu

发明人： Zaki Moussaoui ,  Weihong Qiu ,  Jun Liu

IPC分类号： G01R19/00

CPC分类号： H01L31/02021 ,  G05F1/67 ,  H02J3/385 ,  Y02E10/58

摘要： Circuitry and methodology for tracking the maximum power point (MPP) of a solar panel is disclosed. The voltage and current generated by the solar panel are monitored and used to generate a pulse signal for charging a capacitor. The changes in the voltage and current generated by the solar panel are also monitored, and that information is used to generate a pulse signal for discharging the capacitor. The charging and the discharging pulse signals are used to charge and discharge the capacitor. A reference signal indicative of the charge level of the capacitor is generated. As the current and voltage generated by the solar panel approach the maximum power point (MPP), the frequency of the discharging pulse signal becomes progressively higher, so that the capacitor charging occurs in progressively smaller increments. When the MPP is reached, the reference signal level becomes steady because the charge level of the capacitor becomes steady.

摘要翻译： 公开了用于跟踪太阳能电池板的最大功率点（MPP）的电路和方法。 由太阳能电池板产生的电压和电流被监测并用于产生用于对电容器充电的脉冲信号。 还监视太阳能电池板产生的电压和电流的变化，并且该信息用于产生用于放电电容器的脉冲信号。 充电和放电脉冲信号用于对电容器进行充电和放电。 产生表示电容器的充电电平的参考信号。 当太阳能电池板产生的电流和电压接近最大功率点（MPP）时，放电脉冲信号的频率逐渐变高，电容器充电逐渐增加。 当达到MPP时，由于电容器的充电电平变得稳定，参考信号电平变得稳定。

公开(公告)号：US08400134B2

公开(公告)日：2013-03-19

申请号：US12716654

申请日：2010-03-03

申请人： Zaki Moussaoui ,  Weihong Qiu ,  Jun Liu

发明人： Zaki Moussaoui ,  Weihong Qiu ,  Jun Liu

IPC分类号： G05F1/67 ,  G05F5/00

CPC分类号： H01L31/02021 ,  G05F1/67 ,  H02J3/385 ,  Y02E10/58

摘要： Circuitry and methodology for tracking the maximum power point (MPP) of a solar panel is disclosed. The voltage and current generated by the solar panel are monitored and used to generate a pulse signal for charging a capacitor. The changes in the voltage and current generated by the solar panel are also monitored, and that information is used to generate a pulse signal for discharging the capacitor. The charging and the discharging pulse signals are used to charge and discharge the capacitor. A reference signal indicative of the charge level of the capacitor is generated. As the current and voltage generated by the solar panel approach the maximum power point (MPP), the frequency of the discharging pulse signal becomes progressively higher, so that the capacitor charging occurs in progressively smaller increments. When the MPP is reached, the reference signal level becomes steady because the charge level of the capacitor becomes steady.

摘要翻译： 公开了用于跟踪太阳能电池板的最大功率点（MPP）的电路和方法。 由太阳能电池板产生的电压和电流被监测并用于产生用于对电容器充电的脉冲信号。 还监视太阳能电池板产生的电压和电流的变化，并且该信息用于产生用于放电电容器的脉冲信号。 充电和放电脉冲信号用于对电容器进行充电和放电。 产生表示电容器的充电电平的参考信号。 当太阳能电池板产生的电流和电压接近最大功率点（MPP）时，放电脉冲信号的频率逐渐变高，电容器充电逐渐增加。 当达到MPP时，由于电容器的充电电平变得稳定，参考信号电平变得稳定。

公开(公告)号：US20130021015A1

公开(公告)日：2013-01-24

申请号：US13303702

申请日：2011-11-23

申请人： Zaki Moussaoui ,  Jun Liu

发明人： Zaki Moussaoui ,  Jun Liu

IPC分类号： G05F3/08

CPC分类号： H02M3/1582 ,  H02M2001/0003

摘要： A circuit, device, and method for controlling a buck-boost circuit includes a bootstrap capacitor voltage regulator circuit and a comparator circuit. The bootstrap capacitor voltage regulator circuit is electrically coupled to a buck-mode bootstrap capacitor of the buck-boost converter and to a boost-mode bootstrap capacitor of the buck-boost converter. The comparator circuit is configured to control the bootstrap capacitor voltage regulator circuit to maintain a voltage of the bootstrap capacitors above a reference threshold voltage by transferring an amount energy from one of the bootstrap capacitors to the other bootstrap capacitors based on the particular mode of operation of the buck-boost converter.

摘要翻译： 用于控制降压 - 升压电路的电路，装置和方法包括自举电容器电压调节器电路和比较器电路。 自举电容器电压调节器电路电耦合到降压 - 升压转换器的降压模式自举电容器和降压 - 升压转换器的升压模式自举电容器。 比较器电路被配置为通过基于特定的操作模式将自举电容器电压调节器电路保持自举电容器的电压高于参考阈值电压，通过从自举电容器中的一个向另一个自举电容器传输一定量的能量 降压 - 升压转换器。

公开(公告)号：US08330435B2

公开(公告)日：2012-12-11

申请号：US12903683

申请日：2010-10-13

申请人： Weihong Qiu ,  Zaki Moussaoui ,  Jun Liu

发明人： Weihong Qiu ,  Zaki Moussaoui ,  Jun Liu

IPC分类号： G05F1/613

CPC分类号： G05F1/613 ,  H02M3/156 ,  H02M3/1582

摘要： An apparatus includes a buck boost converter for generating a regulated output voltage responsive to an input voltage. The buck boost converter includes an inductor, a first pair of switching transistors responsive to a first PWM signal and a second pair of switching transistors responsive to a second PWM signal. An error amplifier generates an error voltage responsive to the regulated output voltage and a reference voltage. A control circuit generates the first PWM signal and the second PWM signal responsive to the error voltage and a sensed current voltage responsive to a sensed current through the inductor. The control circuit controls switching of the first pair of switching transistors and the second pair of switching transistors using the first PWM signal and the second PWM signal responsive to the sensed current through the inductor and a plurality of offset error voltages based on the error voltage.

摘要翻译： 一种装置包括用于响应于输入电压产生稳定的输出电压的降压升压转换器。 降压升压转换器包括电感器，响应于第一PWM信号的第一对开关晶体管和响应于第二PWM信号的第二对开关晶体管。 误差放大器响应于调节的输出电压和参考电压产生误差电压。 控制电路响应于误差电压产生第一PWM信号和第二PWM信号，响应于通过电感器的感测电流产生感测的电流电压。 控制电路响应于通过电感器的感测电流和基于误差电压的多个偏移误差电压来控制第一对开关晶体管和第二对开关晶体管的开关，使用第一PWM信号和第二PWM信号。

公开(公告)号：US20120223687A1

公开(公告)日：2012-09-06

申请号：US13109299

申请日：2011-05-17

申请人： Jun Liu ,  Zaki Moussaoui ,  Kenneth L. Lenk

发明人： Jun Liu ,  Zaki Moussaoui ,  Kenneth L. Lenk

IPC分类号： G05F1/56

CPC分类号： G05F1/56 ,  H02M3/1588 ,  H02M2001/0032 ,  H02M2001/0045 ,  Y02B70/1466 ,  Y02B70/16

摘要： A regulator controller which controls conversion of an input voltage to an output voltage, including a switching regulator, a low dropout (LDO) regulator, and a mode controller. The switching regulator develops a pulse control signal to regulate the output voltage when enabled. The LDO regulator also regulates the output voltage when enabled. The mode controller enables or disables the switching regulator and the LDO regulator based on a load condition. The switching regulator is enabled and the LDO regulator is disabled during normal operation. The LDO regulator is enabled when the low load condition is detected, such as a skipped pulse on the pulse control signal. The switching regulator is disabled when the pulse control signal reaches a minimum level. The LDO regulator is disabled and the switching regulator is re-enabled based on threshold conditions of the current output of the LDO regulator.

摘要翻译： 调节器控制器，其控制输入电压到输出电压的转换，包括开关稳压器，低压差（LDO）调节器和模式控制器。 开关稳压器产生脉冲控制信号，以便在使能时调节输出电压。 LDO调节器在使能时也调节输出电压。 模式控制器根据负载条件启用或禁用开关稳压器和LDO稳压器。 开关稳压器使能，LDO稳压器在正常工作期间被禁止。 当检测到低负载条件时，例如脉冲控制信号上的跳过脉冲，LDO稳压器被使能。 当脉冲控制信号达到最小电平时，开关稳压器被禁止。 LDO稳压器被禁止，并且基于LDO稳压器的电流输出的阈值条件重新使能开关稳压器。

公开(公告)号：US08552699B2

公开(公告)日：2013-10-08

申请号：US13286346

申请日：2011-11-01

申请人： Zaki Moussaoui ,  Jifeng Qin ,  Colm Brazil

发明人： Zaki Moussaoui ,  Jifeng Qin ,  Colm Brazil

IPC分类号： G05F1/613 ,  G05F1/00

CPC分类号： H02M1/44 ,  H02M3/156 ,  H02M2001/0058 ,  Y02B70/1491

摘要： An EMI reduction network for a converter, the converter including upper and lower power switches provided between an input voltage node and a reference node. An inductance is coupled between the input voltage node and the upper switch at a first node, a capacitance and an auxiliary power switch are coupled in series between the first and reference nodes, and a controller is provided to control switching. The controller switches the upper switch based on a PWM signal. The controller keeps the lower switch turned on until the phase node goes positive while the upper switch is on. The controller turns the auxiliary switch on after the lower power switch is turned off and turns the auxiliary switch off after the upper power switch is turned off. The lower and auxiliary switches may be zero voltage switched, and the upper switch may be zero current switched.

摘要翻译： 一种用于转换器的EMI降低网络，该转换器包括设置在输入电压节点和参考节点之间的上和下功率开关。 电感耦合在第一节点处的输入电压节点和上部开关之间，电容和辅助电力开关串联耦合在第一参考节点和参考节点之间，并且提供控制器来控制切换。 控制器根据PWM信号切换上部开关。 控制器保持下部开关打开，直到相位节点变为正，而上部开关打开。 在下电源开关关闭后，控制器打开辅助开关，并在上电源开关关闭后关闭辅助开关。 下部和辅助开关可以是零电压切换，并且上部开关可以是零电流切换。

公开(公告)号：US20120049820A1

公开(公告)日：2012-03-01

申请号：US13094007

申请日：2011-04-26

申请人： Zaki Moussaoui ,  Jifeng Qin ,  Joseph Buxton

发明人： Zaki Moussaoui ,  Jifeng Qin ,  Joseph Buxton

IPC分类号： G05F1/618

CPC分类号： H02M1/36 ,  H02M3/1582

摘要： A system and method for reducing negative inductor current during soft start of a bidirectional direct current (DC)-to-DC converter is provided. Typically, the bidirectional DC-to-DC converter includes an active switch and a passive switch. The system employs a soft start circuit that controls the duty cycle of the passive switch during soft start of the active switch. In one aspect, the soft start circuit gradually increases the duty cycle of the passive switch from zero to a steady state value, and provides a soft start for the passive switch concurrently/simultaneously during the soft start of the active switch. Moreover, the soft start circuit disclosed herein can avoid the reverse transient inductor current during start-up, prevent system damage and make the design of the bidirectional DC-to-DC converter more robust.

摘要翻译： 提供了一种用于在双向直流（DC）至DC转换器的软启动期间减小负电感电流的系统和方法。 通常，双向DC-DC转换器包括有源开关和无源开关。 该系统采用软起动电路，在有源开关的软启动期间控制无源开关的占空比。 在一个方面，软启动电路逐渐将无源开关的占空比从零增加到稳态值，并且在有源开关的软启动期间同时/同时提供无源开关的软启动。 此外，本文公开的软启动电路可以避免启动期间的反向瞬态电感器电流，防止系统损坏并且使双向DC-DC转换器的设计更加坚固。