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21. 发明授权

US10404153B2 Control circuit for voltage regulator with reference signal generating and associated method 有权
公开(公告)号：US10404153B2
公开(公告)日：2019-09-03
申请号：US15984312
申请日：2018-05-18
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Binci Xu , Lijie Jiang , Chao Liu , Tao Zhao
IPC分类号： H02M1/00 , H02M3/04 , H02M3/158 , G06F1/28 , H02M3/157 , H02M1/44
摘要： A method for controlling a voltage regulator is receiving a voltage identification code which has a pulse width modulation signal, providing a duty signal via measuring a duty cycle of the pulse width modulation signal, calculating a target voltage based on the duty signal, providing a reference signal via filtering the duty signal by a first filter if the voltage identification code varies, and providing the reference signal via filtering the duty signal by a second filter if the reference signal is in a range determined by the target voltage.

22. 发明申请

US20180337589A1 CONTROL CIRCUIT FOR VOLTAGE REGULATOR WITH REFERENCE SIGNAL GENERATING AND ASSOCIATED METHOD 审中-公开
公开(公告)号：US20180337589A1
公开(公告)日：2018-11-22
申请号：US15984306
申请日：2018-05-18
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Binci Xu , Lijie Jiang , Chao Liu , Tao Zhao
IPC分类号： H02M1/14 , H02M3/04
CPC分类号： H02M1/14 , H02M3/04 , H02M3/156 , H02M2001/0025 , H02M2001/0048
摘要： A method for controlling a voltage regulator is receiving a voltage identification code which has a pulse width modulation signal, providing a duty signal via measuring a duty cycle of the pulse width modulation signal, calculating a target voltage based on the duty signal, providing a reference signal based on the duty signal and the target voltage. If it is judged that the duty cycle of the pulse width modulation signal increases, the reference signal is restricted increasing or keeping its value without decreasing, and if it is judged that the duty cycle of the pulse width modulation signal decreases, the reference signal is restricted decreasing or keeping its value without increasing.

23. 发明申请

US20180337585A1 CONTROL CIRCUIT FOR VOLTAGE REGULATOR WITH REFERENCE SIGNAL GENERATING AND ASSOCIATED METHOD 审中-公开
公开(公告)号：US20180337585A1
公开(公告)日：2018-11-22
申请号：US15984312
申请日：2018-05-18
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Binci Xu , Lijie Jiang , Chao Liu , Tao Zhao
IPC分类号： H02M1/00 , H02M3/04
CPC分类号： H02M1/00 , G06F1/26 , G06F1/28 , H02M1/44 , H02M3/04 , H02M3/157 , H02M3/1588 , H02M2001/0025
摘要： A method for controlling a voltage regulator is receiving a voltage identification code which has a pulse width modulation signal, providing a duty signal via measuring a duty cycle of the pulse width modulation signal, calculating a target voltage based on the duty signal, providing a reference signal via filtering the duty signal by a first filter if the voltage identification code varies, and providing the reference signal via filtering the duty signal by a second filter if the reference signal is in a range determined by the target voltage.

24. 发明授权

US09812950B2 PFC control circuit, digital PFC circuit and the method thereof 有权
公开(公告)号：US09812950B2
公开(公告)日：2017-11-07
申请号：US14737459
申请日：2015-06-11
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Wenbin Lu , Sicong Lin , Qiming Zhao , Lijie Jiang , Guangchao Zhang
IPC分类号： H02M1/42 , H02M1/00
CPC分类号： H02M1/4208 , H02M1/4225 , H02M2001/0012 , Y02B70/126
摘要： A digital PFC circuit with improved power factor is described. The digital PFC circuit uses a compensation current generating unit and a reference current adjust unit to eliminate the effect of a current flowing through an input capacitor to the input current, so that the input current and the input line voltage of the digital PFC circuit are controlled to be in-phase.

25. 发明授权

US09479043B2 Control circuit with synchronization unit for switching converter and associated control method 有权
标题翻译：具有开关转换器同步单元的控制电路及相关控制方法
公开(公告)号：US09479043B2
公开(公告)日：2016-10-25
申请号：US14625319
申请日：2015-02-18
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Lijie Jiang , Xiaokang Wu , Suhua Luo , Qian Ouyang
IPC分类号： H02M1/12 , H02M1/14 , H02M1/084 , H03L7/081 , H03L7/097 , H02M3/158
CPC分类号： H02M1/0845 , H02M3/1584 , H03L7/0814 , H03L7/097
摘要： A control circuit for a switching converter having a comparison circuit, a synchronization unit, an ON-time control circuit and a logic unit, the comparison circuit provides a comparison signal based on a reference signal and an output signal of the switching converter, the synchronization unit provides a first synchronization signal and a second synchronization signal based on a first clock signal, a second clock signal and the comparison signal, the first synchronizing signal is generated by synchronizing the comparison signal with the first clock signal, the second synchronizing signal is generated by synchronizing the comparison signal with the second clock signal, the ON-time control circuit provides an ON-time control signal, the logic unit provides a switching control signal to control the switching converter based on the first synchronization signal, the second synchronization signal and the ON-time control signal.
摘要翻译：一种用于具有比较电路，同步单元，接通时间控制电路和逻辑单元的开关转换器的控制电路，比较电路提供基于参考信号和开关转换器的输出信号的比较信号，同步单元基于第一时钟信号，第二时钟信号和比较信号提供第一同步信号和第二同步信号，通过使比较信号与第一时钟信号同步来产生第一同步信号，产生第二同步信号通过使比较信号与第二时钟信号同步，导通时间控制电路提供接通时间控制信号，逻辑单元提供切换控制信号，以根据第一同步信号，第二同步信号和接通时间控制信号。

26. 发明申请

US20160172959A1 MULTI-RAIL SWITCHING CONVERTER, CONTROL CIRCUIT AND ASSOCIATED CONTROL METHOD 有权
标题翻译：多路开关变换器，控制电路及相关控制方法
公开(公告)号：US20160172959A1
公开(公告)日：2016-06-16
申请号：US14970457
申请日：2015-12-15
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Wangmiao Hu , Lijie Jiang , Wenbin Lu , Qian Ouyang , Jinghai Zhou , Eric Yang
IPC分类号： H02M1/084
CPC分类号： H02M1/084 , H02M3/156 , H02M2001/008
摘要： A multi-rail switching converter providing a plurality of output voltages has a master switching circuit, a plurality of slave switching circuits and a control circuit. The control circuit has an interleaving control circuit, the interleaving control circuit judges a phase zone of a corresponding slave switching circuit based on a switching control signal of the master switching circuit and a set signal of the corresponding slave switching circuit, and adjusts a turn-ON moment of the corresponding slave switching circuit based on the phase zone of the corresponding slave switching circuit.
摘要翻译：提供多个输出电压的多轨开关转换器具有主开关电路，多个从开关电路和控制电路。控制电路具有交错控制电路，交错控制电路基于主开关电路的切换控制信号和对应的从动切换电路的设定信号，判定相应的从动切换电路的相位区域，基于相应从属切换电路的相位区的相应从动切换电路的ON时刻。

27. 发明申请

US20150236580A1 CONTROL CIRCUIT WITH SYNCHRONIZATION UNIT FOR SWITCHING CONVERTER AND ASSOCIATED CONTROL METHOD 有权
标题翻译：用于切换转换器和相关控制方法的同步单元的控制电路
公开(公告)号：US20150236580A1
公开(公告)日：2015-08-20
申请号：US14625319
申请日：2015-02-18
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Lijie Jiang , Xiaokang Wu , Suhua Luo , Qian Ouyang
IPC分类号： H02M1/084 , H03L7/097 , H03L7/081
CPC分类号： H02M1/0845 , H02M3/1584 , H03L7/0814 , H03L7/097
摘要： A control circuit for a switching converter having a comparison circuit, a synchronization unit, an ON-time control circuit and a logic unit, the comparison circuit provides a comparison signal based on a reference signal and an output signal of the switching converter, the synchronization unit provides a first synchronization signal and a second synchronization signal based on a first clock signal, a second clock signal and the comparison signal, the first synchronizing signal is generated by synchronizing the comparison signal with the first clock signal, the second synchronizing signal is generated by synchronizing the comparison signal with the second clock signal, the ON-time control circuit provides an ON-time control signal, the logic unit provides a switching control signal to control the switching converter based on the first synchronization signal, the second synchronization signal and the ON-time control signal.
摘要翻译：一种用于具有比较电路，同步单元，接通时间控制电路和逻辑单元的开关转换器的控制电路，比较电路提供基于参考信号和开关转换器的输出信号的比较信号，同步单元基于第一时钟信号，第二时钟信号和比较信号提供第一同步信号和第二同步信号，通过使比较信号与第一时钟信号同步来产生第一同步信号，产生第二同步信号通过使比较信号与第二时钟信号同步，导通时间控制电路提供接通时间控制信号，逻辑单元提供切换控制信号，以根据第一同步信号，第二同步信号和接通时间控制信号。

28. 发明授权

US09041373B2 Constant on-time switching converters with sleep mode and control methods thereof 有权
标题翻译：具有睡眠模式的恒定导通时间切换转换器及其控制方法
公开(公告)号：US09041373B2
公开(公告)日：2015-05-26
申请号：US13956073
申请日：2013-07-31
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Lijie Jiang , Xiaokang Wu , Qian Ouyang
IPC分类号： G05F1/00 , H03K17/16 , H02M3/158 , H02M1/00
CPC分类号： H03K17/16 , H02M3/158 , H02M2001/0032 , Y02B70/16
摘要： A constant on-time switching converter includes a switching circuit, an on-time control circuit, a comparing circuit and a logic circuit. The switching circuit has a first switch and is configured to provide an output voltage to a load. The on-time control circuit generates an on-time control signal to control the on-time of the first switch. The comparing circuit compares the output voltage of the switching circuit with a reference signal and generates a comparison signal. The logic circuit generates a control signal to control the first switch based on the on-time control signal and the comparison signal. When the switching frequency of the switching circuit approaches an audible range, the switching converter enters into a sleep mode, the on-time control signal is reduced to increase the switching frequency of the switching circuit.
摘要翻译：恒定导通时间切换转换器包括开关电路，导通时间控制电路，比较电路和逻辑电路。开关电路具有第一开关并且被配置为向负载提供输出电压。导通时间控制电路产生导通时间控制信号以控制第一开关的接通时间。比较电路将开关电路的输出电压与参考信号进行比较，并产生比较信号。逻辑电路基于接通时间控制信号和比较信号产生控制信号以控制第一开关。当开关电路的开关频率接近可听范围时，开关转换器进入睡眠模式，导通时间控制信号被减小以增加开关电路的开关频率。

29. 发明授权

US11811325B2 Multiphase switching converter with total current limitation 有权
公开(公告)号：US11811325B2
公开(公告)日：2023-11-07
申请号：US17570708
申请日：2022-01-07
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Lijie Jiang , Binci Xu
IPC分类号： H02M3/158 , H02M1/32
CPC分类号： H02M3/1584 , H02M1/32
摘要： A controller for a multiphase switching converter has a voltage control circuit, a total current control circuit, a frequency divider and a plurality of sub control circuits. The voltage control circuit provides an on-time control signal based on an output voltage. The total current control circuit provides a current control signal based on a total current flowing through the plurality of switching circuits. The frequency divider receives the on-time control signal, and provides a plurality of frequency division signals based on the on-time control signal. The plurality of sub control circuits provides a plurality of switching control signals to control the plurality of switching circuits respectively. Each of the plurality of sub control circuits receives one of the plurality of frequency division signals and the current control signal, and provides one of the plurality of switching control signals.

30. 发明公开

US20230299671A1 SWITCHING CONVERTER WITH OVERSHOOT SUPPRESSION AND CONTROL METHOD THEREOF 审中-公开
公开(公告)号：US20230299671A1
公开(公告)日：2023-09-21
申请号：US18321464
申请日：2023-05-22
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Keke Zhao , Wangmiao Hu , Ting Ma , Gang Yan , Lijie Jiang , Fangyu Zhang , Huichun Dai
IPC分类号： H02M3/156
CPC分类号： H02M3/1566
摘要： A controller used in a switching converter having a switch and converting an input voltage into an output voltage having a transient profile. The controller includes a transient sensing circuit, a mode determining circuit and an on time regulating circuit. The transient sensing circuit generates a transient voltage signal indicative of the transient profile of the output voltage. The mode determining circuit receives the transient voltage signal and a first feedback voltage signal indicative of the output voltage, and generates a mode signal based on a first comparison between the first feedback voltage signal and a first threshold voltage and a second comparison between the transient voltage signal and a second threshold voltage. The on time regulating circuit generates an on time signal to regulate an on time of the switch based on the mode signal.

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