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公开(公告)号：US09595885B2
公开(公告)日：2017-03-14
申请号：US13889255
申请日：2013-05-07
Applicant: Chengdu Monolithic Power Systems Co., Ltd.
Inventor： Siran Wang , Junming Zhang , Yuancheng Ren
CPC classification number: H02M7/217 , H02M3/33523
Abstract: An isolated switching mode power supply, having: an input terminal; an output terminal; a transformer having a primary winding and a secondary winding; a primary power switch coupled to the primary winding; a secondary power switch coupled between the secondary winding and the output terminal of the power supply; a secondary controller configured to generate a frequency modulation signal based on the output voltage and the first feedback signal; a coupled device configured to provide a frequency control signal based on the output voltage and the frequency modulation signal; and a primary controller configured to provide a switching signal to control the primary power switch based on the current sense signal and the frequency control signal.
Abstract translation: 一种隔离开关电源，具有：输入端子; 输出端子; 具有初级绕组和次级绕组的变压器; 耦合到初级绕组的主电源开关; 二次电源开关，其耦合在所述次级绕组和所述电源的输出端子之间; 二次控制器，被配置为基于所述输出电压和所述第一反馈信号生成频率调制信号; 耦合器件，被配置为基于所述输出电压和所述频率调制信号来提供频率控制信号; 以及主控制器，被配置为基于所述电流检测信号和所述频率控制信号来提供开关信号以控制所述主电源开关。
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公开(公告)号：US09407151B2
公开(公告)日：2016-08-02
申请号：US14508929
申请日：2014-10-07
Applicant: Chengdu Monolithic Power Systems Co., Ltd.
Inventor： Junming Zhang , Yuancheng Ren
CPC classification number: H02M3/33507 , H02M2001/0032 , Y02B70/16
Abstract: An isolated switching converter includes a transformer having a primary winding, a secondary winding and an auxiliary winding, a primary switch coupled to the primary winding, a secondary switch coupled to the secondary winding, and a feedback circuit coupled to the auxiliary winding to generate a feedback signal indicative of the output voltage. Under normal operation, the primary switch is controlled based on the feedback signal and the secondary switch is controlled based on the status of the primary switch. Under light load condition, the secondary switch is controlled based on the output voltage. The secondary switch is turned on to generate a negative secondary current flowing through the secondary winding and turned off when the negative secondary current reaches a secondary current threshold. The primary switch is turned on based on a negative primary current and turned off when the primary current reaches a primary current threshold.
Abstract translation: 隔离开关转换器包括具有初级绕组，次级绕组和辅助绕组的变压器，耦合到初级绕组的初级开关，耦合到次级绕组的次级开关，以及耦合到辅助绕组的反馈电路，以产生 反馈信号表示输出电压。 在正常工作状态下，主开关根据反馈信号进行控制，二次开关根据主开关的状态进行控制。 在轻负载条件下，二次开关基于输出电压进行控制。 二次开关导通以产生流过次级绕组的负二次电流，当负二次电流达到次级电流阈值时，二次开关截止。 初级开关基于负初级电流导通，并在初级电流达到初级电流阈值时关闭。
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公开(公告)号：US09065348B2
公开(公告)日：2015-06-23
申请号：US13889223
申请日：2013-05-07
Applicant: Chengdu Monolithic Power Systems Co., Ltd.
Inventor： Siran Wang , Junming Zhang , Yuancheng Ren
CPC classification number: H02M3/33523 , H02M1/36
Abstract: An isolated switching mode power supply, having: a transformer having a primary winding, a secondary winding and a third winding; a current limit comparator configured to provide a current limit signal based on the current sense signal and the peak current signal; a logic circuit configured to provide a logic control signal based on the frequency control signal and the current limit signal; a startup control circuit configured to generate a startup control signal based on the current sense signal; a load detecting circuit configured to provide a load detecting signal based on the second feedback signal and the switching signal; and a selector configured to provide the logic control signal or the startup control signal based on the load detecting signal.
Abstract translation: 一种隔离开关电源，具有：具有初级绕组，次级绕组和第三绕组的变压器; 电流限制比较器，被配置为基于电流检测信号和峰值电流信号提供限流信号; 逻辑电路，被配置为基于所述频率控制信号和所述电流限制信号来提供逻辑控制信号; 启动控制电路，被配置为基于所述电流检测信号产生启动控制信号; 负载检测电路，被配置为基于所述第二反馈信号和所述开关信号提供负载检测信号; 以及选择器，其被配置为基于所述负载检测信号来提供所述逻辑控制信号或所述启动控制信号。
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公开(公告)号：US20150016154A1
公开(公告)日：2015-01-15
申请号：US14327219
申请日：2014-07-09
Applicant: Chengdu Monolithic Power Systems Co., Ltd.
Inventor： Siran Wang , Yike Li , Kun Yi , Yuancheng Ren , Junming Zhang , En Li
IPC: H03K5/1532 , H02M3/335
CPC classification number: H02M1/4258 , Y02B70/126
Abstract: A peak sample circuit for AC voltage, including: a rectifier coupled to receive an AC voltage and to rectify the AC voltage to generate a rectified signal; a delay circuit coupled to receive the rectified signal and to delay the rectified signal to generate a delayed rectified signal; a comparison circuit coupled to receive the delayed rectified signal and to generate a square signal based on the comparison of the rectified signal and the delayed rectified signal; and a sample output circuit coupled to receive the rectified signal, wherein the sample output circuit samples the rectified signal under the control of the square signal and provides a peak sample signal representative of the peak value of the AC voltage.
Abstract translation: 一种用于AC电压的峰值采样电路，包括：整流器，被耦合以接收AC电压并且对AC电压进行整流以产生整流信号; 延迟电路，被耦合以接收整流信号并延迟整流信号以产生延迟整流信号; 比较电路，其耦合以接收延迟整流信号，并且基于整流信号与延迟整流信号的比较产生平方信号; 以及耦合以接收整流信号的采样输出电路，其中所述采样输出电路在所述平方信号的控制下对所述整流信号进行采样，并提供表示所述AC电压的峰值的峰值采样信号。
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公开(公告)号：US09479046B2
公开(公告)日：2016-10-25
申请号：US14222451
申请日：2014-03-21
Applicant: Chengdu Monolithic Power Systems Co., Ltd.
Inventor： Sicong Lin , Yiqing Jin , Yuancheng Ren , Junming Zhang
CPC classification number: H02M1/4225 , H02M1/40 , H02M1/42 , Y02B70/126 , Y02P80/112
Abstract: A PFC circuit includes: a switching circuit having a power switch; an on time control circuit for controlling an on time period of the power switch; a first off time control circuit; a second off time control circuit; and a logic circuit selectively controls the power switch working under CCM or DCM; when working under CCM, the first off time control circuit controls an off time period of the power switch and when working under DCM, the second off time control circuit controls the off time period of the power switch.
Abstract translation: PFC电路包括：具有电源开关的开关电路; 用于控制电源开关的接通时间段的准时控制电路; 第一关断时间控制电路; 第二关闭时间控制电路; 并且逻辑电路选择性地控制在CCM或DCM下工作的电源开关; 当在CCM下工作时，第一关闭时间控制电路控制电源开关的关闭时间段，并且在DCM下工作时，第二关断时间控制电路控制电源开关的关闭时间段。
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Patent Agency Ranking
公开(公告)号：US20140153301A1
公开(公告)日：2014-06-05
申请号：US13931749
申请日：2013-06-28
Applicant: Chengdu Monolithic Power Systems Co., Ltd.
Inventor： Siran Wang , Yike Li , Kun Yi , Yuancheng Ren , Junming Zhang , En Li
CPC classification number: G01R19/175 , G01R31/42
Abstract: An AC signal detector having: a rectify circuit having a first input terminal and a second input terminal configured to receive an AC signal, and an output terminal configured to provide a rectified signal based on the AC signal; a detecting circuit having an input terminal coupled to the output terminal of the rectify circuit to receive the rectified signal, and an output terminal configured to provide a square signal based on the rectified signal; and an unplug indicate circuit having an input terminal coupled to the detecting circuit to receive the square signal, and an output terminal configured to provide an unplug indicate signal based on the square signal.
Abstract translation: 一种AC信号检测器，具有：具有第一输入端和被配置为接收AC信号的第二输入端的整流电路，以及输出端，被配置为基于所述AC信号提供整流信号; 检测电路，其具有耦合到整流电路的输出端以接收整流信号的输入端子，以及输出端子，被配置为基于整流信号提供平方信号; 以及拔出指示电路，其具有耦合到所述检测电路的输入端子以接收所述平方信号，以及输出端子，被配置为基于所述平方信号提供拔出指示信号。
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公开(公告)号：US20130301311A1
公开(公告)日：2013-11-14
申请号：US13889286
申请日：2013-05-07
Applicant: CHENGDU MONOLITHIC POWER SYSTEMS CO., LTD.
Inventor： Siran Wang , Junming Zhang , Yuancheng Ren
IPC: H02M3/335
CPC classification number: H02M3/33515 , H02M3/33507 , H02M3/33523
Abstract: A switching mode power supply, having: an input port; an output port; an energy storage component and a pair of power switches coupled between input port and the output port; an error amplifier configured to generate an amplified error signal based on the feedback signal and the reference signal; an error comparator configured to generate a frequency control signal based on the amplified error signal and the first sawtooth signal; a peak current generator configured to generate a peak current signal based on the frequency control signal; a peak current comparator configured to generate a current limit signal based on the peak current signal and the current sense signal; and a logic circuit configured to generate a switching signal to control the power switches based on the frequency control signal and the current limit signal.
Abstract translation: 一种开关模式电源，具有：输入端口; 输出端口 耦合在输入端口和输出端口之间的能量存储部件和一对电源开关; 误差放大器，被配置为基于所述反馈信号和所述参考信号产生放大的误差信号; 误差比较器，被配置为基于放大的误差信号和第一锯齿波信号产生频率控制信号; 峰值电流发生器，被配置为基于所述频率控制信号产生峰值电流信号; 峰值电流比较器，被配置为基于峰值电流信号和电流检测信号产生限流信号; 以及逻辑电路，被配置为基于所述频率控制信号和所述电流限制信号产生开关信号以控制所述功率开关。
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公开(公告)号：US20130301310A1
公开(公告)日：2013-11-14
申请号：US13889255
申请日：2013-05-07
Applicant: CHENGDU MONOLITHIC POWER SYSTEMS CO., LTD.
Inventor： Siran Wang , Junming Zhang , Yuancheng Ren
IPC: H02M7/217
CPC classification number: H02M7/217 , H02M3/33523
Abstract: An isolated switching mode power supply, having: an input terminal; an output terminal; a transformer having a primary winding and a secondary winding; a primary power switch coupled to the primary winding; a secondary power switch coupled between the secondary winding and the output terminal of the power supply; a secondary controller configured to generate a frequency modulation signal based on the output voltage and the first feedback signal; a coupled device configured to provide a frequency control signal based on the output voltage and the frequency modulation signal; and a primary controller configured to provide a switching signal to control the primary power switch based on the current sense signal and the frequency control signal.
Abstract translation: 一种隔离开关电源，具有：输入端子; 输出端子; 具有初级绕组和次级绕组的变压器; 耦合到初级绕组的主电源开关; 二次电源开关，其耦合在所述次级绕组和所述电源的输出端子之间; 二次控制器，被配置为基于所述输出电压和所述第一反馈信号生成频率调制信号; 耦合器件，被配置为基于所述输出电压和所述频率调制信号来提供频率控制信号; 以及主控制器，被配置为基于所述电流检测信号和所述频率控制信号来提供开关信号以控制所述主电源开关。
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公开(公告)号：US09577514B2
公开(公告)日：2017-02-21
申请号：US14327219
申请日：2014-07-09
Applicant: Chengdu Monolithic Power Systems Co., Ltd.
Inventor： Siran Wang , Yike Li , Kun Yi , Yuancheng Ren , Junming Zhang , En Li
CPC classification number: H02M1/4258 , Y02B70/126
Abstract: A peak sample circuit for AC voltage, including: a rectifier coupled to receive an AC voltage and to rectify the AC voltage to generate a rectified signal; a delay circuit coupled to receive the rectified signal and to delay the rectified signal to generate a delayed rectified signal; a comparison circuit coupled to receive the delayed rectified signal and to generate a square signal based on the comparison of the rectified signal and the delayed rectified signal; and a sample output circuit coupled to receive the rectified signal, wherein the sample output circuit samples the rectified signal under the control of the square signal and provides a peak sample signal representative of the peak value of the AC voltage.
Abstract translation: 一种用于AC电压的峰值采样电路，包括：整流器，被耦合以接收AC电压并且对AC电压进行整流以产生整流信号; 延迟电路，被耦合以接收整流信号并延迟整流信号以产生延迟整流信号; 比较电路，其耦合以接收延迟整流信号，并且基于整流信号与延迟整流信号的比较产生平方信号; 以及耦合以接收整流信号的采样输出电路，其中所述采样输出电路在所述平方信号的控制下对所述整流信号进行采样，并提供表示所述AC电压的峰值的峰值采样信号。
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10.发明授权公开(公告)号：US09331583B2
公开(公告)日：2016-05-03
申请号：US14139601
申请日：2013-12-23
Applicant: Chengdu Monolithic Power Systems Co., Ltd.
Inventor： Junming Zhang , Hao Long , Hui Li
CPC classification number: H02M3/33507 , H02M2001/0032 , Y02B70/16
Abstract: A switch mode power supply having an output terminal configured to provide an output voltage, the switch mode power supply has a first switch and a control circuit. The control circuit is configured to provide a switching control signal to control the first switch. The control circuit is configured to provide the switching control signal based on a first pulse signal having a first frequency and a second frequency for a light load condition, and the control circuit is configured to provide the switching control signal based on a second pulse signal for a non-light load condition.
Abstract translation: 开关模式电源具有被配置为提供输出电压的输出端子，开关模式电源具有第一开关和控制电路。 控制电路被配置为提供切换控制信号以控制第一开关。 控制电路被配置为基于具有用于轻负载状态的第一频率和第二频率的第一脉冲信号来提供开关控制信号，并且控制电路被配置为基于第二脉冲信号提供开关控制信号，用于 非轻载条件。
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