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1. 发明授权

US10218263B2 Introducing jitter to a switching frequency by way of modulating current limit 有权
公开(公告)号：US10218263B2
公开(公告)日：2019-02-26
申请号：US15698408
申请日：2017-09-07
申请人： Power Integrations, Inc.
发明人： Roland Sylvere Saint-Pierre , Giao Minh Pham , Lance M. Wong , David Michael Hugh Matthews
IPC分类号： H02M3/335 , H02M1/44
摘要： A controller includes a switch controller coupled to a power switch coupled to an energy transfer element. The switch controller is coupled to receive a current sense signal representative of a drain current through the power switch. The switch controller is coupled to generate a drive signal to control switching of the power switch in response to the current sense signal and a modulated current limit signal to control a transfer of energy from an input to an output of the power converter. A control modulator is coupled to generate a first signal. A jitter modulator is coupled to generate a second signal. The second signal is a periodic signal having a modulation time period that is greater than a switching period of the drive signal. An arithmetic operator circuit is coupled to generate the modulated current limit signal in response to the first signal and the second signal.

2. 发明授权

US09621057B2 Single-stage power supply with power factor correction and constant current output 有权
公开(公告)号：US09621057B2
公开(公告)日：2017-04-11
申请号：US14987445
申请日：2016-01-04
申请人： Power Integrations, Inc.
发明人： Roland Sylvere Saint-Pierre
IPC分类号： H02M3/335 , H02M1/42 , H05B33/08 , H02M1/00
CPC分类号： H02M3/33515 , H02M1/425 , H02M3/33523 , H02M2001/0009 , H05B33/0809 , H05B33/0815 , Y02B70/126
摘要： A switched mode power converter includes a switch, an energy transfer element coupled to the switch, and a controller that includes a delayed ramp generator coupled to generate a delayed ramp signal, an input charge control signal generator coupled to generate an input charge control signal representative of an integral of an input current sense signal and a ratio of an input voltage sense signal to an output voltage sense signal, and a drive signal generator coupled to receive the delayed ramp signal and the input charge control signal, to regulate an output of the switch mode power converter. The drive signal generator produces a drive signal responsive to the input charge control signal and the delayed ramp signal. The drive signal is coupled to control the switch of the switch mode power converter.

3. 发明授权

US09618955B2 Method and apparatus to increase efficiency in a power factor correction circuit 有权
公开(公告)号：US09618955B2
公开(公告)日：2017-04-11
申请号：US14805228
申请日：2015-07-21
申请人： Power Integrations, Inc.
发明人： Roland Sylvere Saint-Pierre
IPC分类号： H02M1/42 , G05F1/70
CPC分类号： G05F1/70 , H02M1/4225 , Y02B70/126 , Y02P80/112
摘要： A power factor correction (PFC) controller includes a driver circuit coupled to vary the switching frequency of the power switch of the PFC converter in response to an input current of a PFC converter and an input voltage of the PFC converter, and to output a third signal to switch the power switch of the PFC converter to control the input current to substantially follow the input voltage. A frequency adjust circuit is coupled to receive an error voltage signal representative of an output of the PFC converter. The frequency adjust circuit is further coupled to output an adjusted error signal to adjust the end of the off time of the power switch of the PFC converter in response to the error voltage signal.

4. 发明授权

US09263958B2 Single-stage power supply with power factor correction and constant current output 有权
标题翻译：单级电源，功率因数校正和恒流输出
公开(公告)号：US09263958B2
公开(公告)日：2016-02-16
申请号：US14018274
申请日：2013-09-04
申请人： Power Integrations, Inc.
发明人： Roland Sylvere Saint-Pierre
IPC分类号： H02M3/335 , H02M1/42 , H05B33/08
CPC分类号： H02M3/33515 , H02M1/425 , H02M3/33523 , H02M2001/0009 , H05B33/0809 , H05B33/0815 , Y02B70/126
摘要： An example power supply includes an energy transfer element, a switch, and a controller. The switch is coupled to the energy transfer element to control a transfer of energy from an input to a galvanically isolated output of the power supply. The controller includes a delayed ramp generator, an integrator, an arithmetic operator, and a drive signal generator. The integrator generates a first signal responsive to integrating an input current of the power supply. The arithmetic operator generates a second signal responsive to the first signal and responsive to a ratio of a rectified input voltage to a dc output voltage of the power supply. The drive signal generator generates a drive signal in response to a delayed ramp signal and the second signal to control switching of the switch to provide power factor correction of the power supply and to provide a regulated current at the output.
摘要翻译：示例性电源包括能量传递元件，开关和控制器。开关耦合到能量传递元件以控制能量从电源的输入到电隔离输出的传递。控制器包括延迟斜坡发生器，积分器，算术运算器和驱动信号发生器。积分器响应于积分电源的输入电流而产生第一信号。算术运算器响应于第一信号产生响应于整流输入电压与电源的直流输出电压的比率的第二信号。驱动信号发生器响应于延迟的斜坡信号和第二信号产生驱动信号以控制开关的开关以提供电源的功率因数校正并在输出端提供调节电流。

5. 发明授权

US09116538B2 Method and apparatus to increase efficiency in a power factor correction circuit 有权
标题翻译：提高功率因数校正电路效率的方法和装置
公开(公告)号：US09116538B2
公开(公告)日：2015-08-25
申请号：US13951771
申请日：2013-07-26
申请人： Power Integrations, Inc.
发明人： Roland Sylvere Saint-Pierre
IPC分类号： G05F1/00 , G05F1/70 , H02M1/42
CPC分类号： G05F1/70 , H02M1/4225 , Y02B70/126 , Y02P80/112
摘要： A power factor correction (PFC) controller includes a capacitor, an error amplifier, a switching frequency adjuster, a comparator, and a drive signal generator. The current source generates a current that is representative of an instantaneous input voltage of a PFC converter to charge the capacitor when a power switch of the PFC converter is off. The switching frequency adjuster generates an adjusted error signal in response to an error signal generated by the error amplifier. The comparator compares a voltage on the capacitor with the adjusted error signal to generate a first signal to end an off time of the power switch. The drive signal generator controls switching of the power switch in response to the first signal. The switching frequency adjuster changes the adjusted error signal in response to changes in the error signal to adjust an average switching frequency of the power switch.
摘要翻译：功率因数校正（PFC）控制器包括电容器，误差放大器，开关频率调节器，比较器和驱动信号发生器。当PFC转换器的电源开关关闭时，电流源产生代表PFC转换器的瞬时输入电压以对电容器充电的电流。开关频率调节器响应于由误差放大器产生的误差信号产生调整后的误差信号。比较器将电容器上的电压与调整后的误差信号进行比较，以产生第一个信号，以结束电源开关的关闭时间。驱动信号发生器响应于第一信号控制电源开关的切换。开关频率调节器根据误差信号的变化改变调整后的误差信号，调整电源开关的平均开关频率。

6. 发明申请

US20140268951A1 LOAD-SELECTIVE INPUT VOLTAGE SENSOR 有权
标题翻译：负载选择性输入电压传感器
公开(公告)号：US20140268951A1
公开(公告)日：2014-09-18
申请号：US13801980
申请日：2013-03-13
申请人： POWER INTEGRATIONS, INC.
发明人： Zhao-Jun Wang , Giao Minh Pham , Roland Sylvere Saint-Pierre
IPC分类号： H02M7/12
CPC分类号： H02M3/33515 , H02M1/08 , H02M1/32 , H02M3/33523 , H02M7/06 , H02M7/12 , H02M2001/0009 , H02M2001/0032 , Y02B70/16
摘要： A power converter controller includes a switch driver circuit coupled to generate a drive signal to control switching of a power switch to control a transfer of energy from an input of the power converter to an output of the power converter. An input sense circuit is coupled to receive an input sense signal representative of the input of a power converter. A sense enable circuit is coupled to receive the drive signal to generate a sense enable signal to control the input sense circuit in response to the drive signal. The sense enable signal is coupled to control the input sense circuit to sense the input sense signal continuously in response to a first load condition, and sense the input sense signal only during a fraction of a switching period of the power switch in response to a second load condition.
摘要翻译：电力转换器控制器包括开关驱动器电路，其耦合以产生驱动信号以控制功率开关的切换以控制能量从功率转换器的输入到功率转换器的输出的转移。输入检测电路被耦合以接收表示功率转换器的输入的输入检测信号。感测使能电路被耦合以接收驱动信号以产生感测使能信号，以响应于驱动信号来控制输入检测电路。感测使能信号被耦合以控制输入检测电路以响应于第一负载条件连续地感测输入检测信号，并且仅在功率开关的开关周期的一小部分期间响应于第二负载条件检测输入检测信号负载条件。

7. 发明申请

US20210028708A1 SWITCHED MODE POWER CONVERTER CONTROLLER WITH RAMP TIME MODULATION 有权
公开(公告)号：US20210028708A1
公开(公告)日：2021-01-28
申请号：US17018840
申请日：2020-09-11
申请人： Power Integrations, Inc.
发明人： Balu Balakrishnan , Roland Sylvere Saint-Pierre , Giao Minh Pham , Lance M. Wong
IPC分类号： H02M3/335 , H02M3/156 , H02M1/08
摘要： A controller to regulate a power converter includes a terminal that receives an enable signal including enable events representative of an output of the power converter. A drive circuit generates a drive signal to control switching of a power switch to control an energy transfer from an input to an output of the power converter. The drive circuit turns on the power switch when an enable event is received in the enable signal. A current limit threshold generator is coupled to the drive circuit to generate a threshold signal. The threshold signal increases in response to the power switch turning off and subsequently decreases. The threshold signal and a time between consecutive enable events are used to modulate the drive signal to regulate the output of the power converter.

8. 发明授权

US10811977B2 Switched mode power converter controller with ramp time modulation 有权
公开(公告)号：US10811977B2
公开(公告)日：2020-10-20
申请号：US16173843
申请日：2018-10-29
申请人： Power Integrations, Inc.
发明人： Balu Balakrishnan , Roland Sylvere Saint-Pierre , Giao Minh Pham , Lance M. Wong
IPC分类号： H02M3/335 , H02M3/156 , H02M1/08 , H02M3/157 , H02M1/00
摘要： A controller to regulate a power converter includes a terminal coupled to receive an enable signal including enable events representative of an output of the power converter. A drive circuit is coupled to generate a drive signal to control switching of a power switch to control a transfer of energy from an input of the power converter to the output of the power converter. The drive circuit is coupled to turn on the power switch when an enable event is received in the enable signal. A current limit threshold generator is coupled to the drive circuit to generate a current limit threshold signal. The current limit threshold signal varies each switching cycle of the power switch. A time between consecutive enable events in the enable signal is the switching cycle of the power switch.

9. 发明授权

US10447149B2 Introducing jitter to a switching frequency by way of modulating current limit 有权
公开(公告)号：US10447149B2
公开(公告)日：2019-10-15
申请号：US16243775
申请日：2019-01-09
申请人： Power Integrations, Inc.
发明人： Roland Sylvere Saint-Pierre , Giao Minh Pham , Lance M. Wong , David Michael Hugh Matthews
IPC分类号： H02M3/335 , H02M1/44
摘要： A controller includes a switch controller, a current limit generator, a jitter modulator, and an arithmetic operator circuit. The switch controller is coupled to generate a drive signal to control switching of a power switch in response to a current sense signal and a modulated current limit signal to control a transfer of energy from an input of a power converter to an output of the power converter. The current limit generator is coupled to generate a current limit signal. The jitter modulator is coupled to generate a jitter signal for jittering a switching period of the drive signal without an oscillator. The arithmetic operator circuit is coupled to receive the current limit signal and the jitter signal and is coupled to generate a modulated current limit signal in response to the current limit signal and the jitter signal.

10. 发明授权

US10158295B2 Switched mode power converter controller with ramp time modulation 有权
公开(公告)号：US10158295B2
公开(公告)日：2018-12-18
申请号：US15795785
申请日：2017-10-27
申请人： Power Integrations, Inc.
发明人： Balu Balakrishnan , Roland Sylvere Saint-Pierre , Giao Minh Pham , Lance M. Wong
IPC分类号： H02M3/335 , H02M3/156 , H02M1/00
摘要： A power converter includes an energy transfer element that includes a primary winding and a secondary winding, and is coupled to transfer energy between the primary winding and the secondary winding. An enable circuit is coupled to generate an enable signal in response to a feedback signal falling below a threshold. A controller is coupled to control switching of a power switch coupled to the primary winding to regulate an output of the power converter. The controller includes a drive circuit coupled to output a drive signal in response to the enable signal, and a current limit threshold generator coupled to output a current limit threshold signal to the drive circuit in response to the drive signal. The current limit threshold signal varies in response to a time between events of the enable signal over a range of loads coupled to the output of the power converter.

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