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1. 发明申请

US20210359612A1 DUAL MODE RESONANT CONVERTER, AND ASSOCIATED CONTROL CIRCUIT AND CONTROL METHOD THEREOF 有权
公开(公告)号：US20210359612A1
公开(公告)日：2021-11-18
申请号：US17236900
申请日：2021-04-21
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Qian Ouyang
IPC分类号： H02M3/335
摘要： A control circuit for a resonant converter has a communication interface, a memory, and a primary switching control circuit. The memory provides a frequency setting signal capable of being programmed through a communication interface, the primary switching control circuit provides a first control signal to control a high-side switch and a second control signal to control a low-side switch. When the resonant converter works in an open loop mode, a frequency of the first control signal and the second control signal is determined by the frequency setting signal, an on-time period of the high-side switch equals an on-time period of the low-side switch, less than half of a resonant period.

2. 发明授权

US10468973B2 Over current protecting circuit and the method thereof 有权
公开(公告)号：US10468973B2
公开(公告)日：2019-11-05
申请号：US16103846
申请日：2018-08-14
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Xiaokang Wu , Qian Ouyang , Yu Zhang , Xiaogang Wei
IPC分类号： H02M1/32 , H02M3/156 , H02M1/08 , H02M1/00
摘要： An over current protecting circuit, used with a switching converter having a switch, having: a current limiting circuit, configured to receive a limit indicating signal and to provide an on time signal to control an on time period of the switch based on the limit indicating signal, wherein if the limit indicating signal indicates a current flowing through the switch of the switching converter is larger than a limiting threshold, the on time period of a next switching cycle of the switch is subtracted with a first period, otherwise, the on time period of the switch of the next switching cycle is added with a second period; wherein a maximum on time period of the switch is fixed to be an on time reference.

3. 发明申请

US20180262119A1 RESONANT CONVERTER WITH ADAPTIVE ON-TIME CONTROL AND THE METHOD THEREOF 审中-公开
公开(公告)号：US20180262119A1
公开(公告)日：2018-09-13
申请号：US15898198
申请日：2018-02-15
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Qian Ouyang
IPC分类号： H02M3/335 , H02M1/08
CPC分类号： H02M3/33576 , H02M1/08 , H02M3/3376 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491 , Y02P80/112
摘要： A resonant converter adopts adaptive on-time control to provide better transient response. When the output voltage of the resonant converter varies, the on-time length of a power switch in power stages is adjusted, so that the switching frequency and the gain are regulated and optimized.

4. 发明申请

US20180173286A1 AUTONOMOUS POWER SYSTEM AND ASSOCIATED CONTROL METHOD 审中-公开
公开(公告)号：US20180173286A1
公开(公告)日：2018-06-21
申请号：US15842797
申请日：2017-12-14
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Reagan Luo , Qian Ouyang , Lijie Jiang , Marvin Ma , Xiaokang Wu
IPC分类号： G06F1/26 , G06F1/28
CPC分类号： G06F1/266 , G06F1/26 , G06F1/28
摘要： An autonomous power system has a voltage regulator which converts an input voltage to an output voltage according to a reference voltage. A control method for the power system: receiving a voltage identification code sent by a processor; providing an autonomous voltage identification code when the voltage identification sent by the processor keeps constant during a first preset duration, wherein the autonomous voltage identification code can be updated self-adaptively; providing a reference voltage according to a sum of the voltage identification code and the autonomous identification code; and adjusting the output voltage according to the reference voltage.

5. 发明申请

US20170141680A1 DC-DC CONVERTER WITH TRANSIENT CONTROL AND THE METHOD THEREOF 审中-公开
公开(公告)号：US20170141680A1
公开(公告)日：2017-05-18
申请号：US15344429
申请日：2016-11-04
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Qian Ouyang , Xiaokang Wu , Lijie Jiang
IPC分类号： H02M3/04 , H02M1/08
CPC分类号： H02M3/156 , H02M2003/1566
摘要： The present invention discloses a DC-DC converter with constant on time control. The DC-DC converter includes a transient unit to obtain the transient information of a current flowing through a power switching circuit, to slow down the variation of the output voltage, so as to eliminate the overshot issue.

6. 发明授权

US09356510B2 Constant on-time switching converter and control method thereof 有权
标题翻译：恒定导通时间切换转换器及其控制方法
公开(公告)号：US09356510B2
公开(公告)日：2016-05-31
申请号：US14310293
申请日：2014-06-20
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Lijie Jiang , Xiaokang Wu , Qian Ouyang
IPC分类号： H02M3/158 , H02M3/156 , H02M1/00
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A switching converter providing an output voltage has at least one switch and a control circuit. The control circuit has a slope compensation module, an output correction module and a control module, wherein the slope compensation module provides a slope compensation signal, the output correction module provides a voltage trim signal based on the slope compensation signal, and the control module provides a control signal to control the at least one switch based on the slope compensation signal, the voltage trim signal, a reference signal, the output voltage and an error compensation signal provided based on a difference between the output voltage and a set target of the output voltage.
摘要翻译：提供输出电压的开关转换器具有至少一个开关和控制电路。控制电路具有斜率补偿模块，输出校正模块和控制模块，斜坡补偿模块提供斜率补偿信号，输出校正模块基于斜率补偿信号提供电压调整信号，控制模块提供基于斜率补偿信号，电压调整信号，参考信号，输出电压和基于输出电压与输出的设定目标之间的差异提供的误差补偿信号来控制至少一个开关的控制信号电压。

7. 发明申请

US20140375286A1 CONSTANT ON-TIME SWITCHING CONVERTER AND CONTROL METHOD THEREOF 有权
标题翻译：恒定的接通时间切换转换器及其控制方法
公开(公告)号：US20140375286A1
公开(公告)日：2014-12-25
申请号：US14310293
申请日：2014-06-20
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Lijie Jiang , Xiaokang Wu , Qian Ouyang
IPC分类号： H02M3/158
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A switching converter providing an output voltage has at least one switch and a control circuit. The control circuit has a slope compensation module, an output correction module and a control module, wherein the slope compensation module provides a slope compensation signal, the output correction module provides a voltage trim signal based on the slope compensation signal, and the control module provides a control signal to control the at least one switch based on the slope compensation signal, the voltage trim signal, a reference signal, the output voltage and an error compensation signal provided based on a difference between the output voltage and a set target of the output voltage.
摘要翻译：提供输出电压的开关转换器具有至少一个开关和控制电路。控制电路具有斜率补偿模块，输出校正模块和控制模块，斜坡补偿模块提供斜率补偿信号，输出校正模块基于斜率补偿信号提供电压调整信号，控制模块提供基于斜率补偿信号，电压调整信号，参考信号，输出电压和基于输出电压与输出的设定目标之间的差异提供的误差补偿信号来控制至少一个开关的控制信号电压。

8. 发明授权

US08896278B2 Multi-phase switching converter with overlap mode and control method thereof 有权
标题翻译：具有重叠模式的多相开关变换器及其控制方法
公开(公告)号：US08896278B2
公开(公告)日：2014-11-25
申请号：US13720710
申请日：2012-12-19
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Qian Ouyang , Lijie Jiang , Xiaokang Wu , Bo Zhang , Suhua Luo
IPC分类号： G05F1/577 , G05F1/10
CPC分类号： G05F1/10 , H02M3/1584 , H02M2003/1566 , H02M2003/1586
摘要： A multi-phase switching converter and control method thereof. The multi-phase switching converter includes a plurality of switching circuits and a controller. The output terminals of the plurality of switching circuits are coupled together to provide an output voltage to a load. The controller is configured to generate a plurality of control signals to turn on the plurality of switching circuits successively. When a load current increase is detected, the controller operates in an overlap mode and at least two switching circuits subsequent to the current switching circuit are turned on simultaneously. After the overlap mode, the controller resumes to the interleave mode and turns on the plurality of switching circuits successively from the switching circuit subsequent to the at least two switching circuits.
摘要翻译：一种多相开关变换器及其控制方法。多相开关变换器包括多个开关电路和控制器。多个开关电路的输出端子耦合在一起以向负载提供输出电压。控制器被配置为产生多个控制信号，以连续地接通多个开关电路。当检测到负载电流增加时，控制器以重叠模式操作，并且当前开关电路之后的至少两个开关电路同时导通。在重叠模式之后，控制器恢复到交错模式，并且在至少两个开关电路之后从开关电路连续地接通多个开关电路。

9. 发明申请

US20140071720A1 VOLTAGE CONVERTER AND ASSOCIATED OVER-VOLTAGE PROTECTION METHOD 审中-公开
标题翻译：电压转换器及相关的过压保护方法
公开(公告)号：US20140071720A1
公开(公告)日：2014-03-13
申请号：US14024574
申请日：2013-09-11
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Qian Ouyang , Eric Yang , Jinghai Zhou , Jijian Sun
IPC分类号： H02M1/32
CPC分类号： H02M1/32 , H02H7/1213 , H02M3/158
摘要： A voltage converter includes: an input terminal receiving an input voltage; an output terminal providing an output voltage; a switching circuit having a main switch configured to regulate the output voltage, wherein a control end of the main switch is configured to receive a Pulse Width Modulation (PWM) signal, and the output voltage is controlled according to the duty cycle of the PWM signal; and a protection switch coupled between the input terminal and the switching circuit, and wherein when the output voltage is higher than a reference voltage, the protection switch is turned OFF.
摘要翻译：电压转换器包括：输入端子，其接收输入电压; 提供输出电压的输出端子; 开关电路，其具有被配置为调节输出电压的主开关，其中主开关的控制端被配置为接收脉宽调制（PWM）信号，并且根据PWM信号的占空比来控制输出电压 ; 以及耦合在所述输入端子和所述开关电路之间的保护开关，并且其中当所述输出电压高于参考电压时，所述保护开关被断开。

10. 发明授权

US10620677B2 Autonomous power system and associated control method 有权
公开(公告)号：US10620677B2
公开(公告)日：2020-04-14
申请号：US15842797
申请日：2017-12-14
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Reagan Luo , Qian Ouyang , Lijie Jiang , Marvin Ma , Xiaokang Wu
IPC分类号： G06F1/26 , G06F1/28
CPC分类号： G06F1/266 , G06F1/26 , G06F1/28
摘要： An autonomous power system has a voltage regulator which converts an input voltage to an output voltage according to a reference voltage. A control method for the power system: receiving a voltage identification code sent by a processor; providing an autonomous voltage identification code when the voltage identification sent by the processor keeps constant during a first preset duration, wherein the autonomous voltage identification code can be updated self-adaptively; providing a reference voltage according to a sum of the voltage identification code and the autonomous identification code; and adjusting the output voltage according to the reference voltage.

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