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1. 发明授权

US11545902B2 Multiphase switching converters, control circuits with daisy chain configuration and associated fault protection method 有权
公开(公告)号：US11545902B2
公开(公告)日：2023-01-03
申请号：US17184093
申请日：2021-02-24
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Suhua Luo
IPC分类号： H02M3/158 , H02M1/32
摘要： A multiphase switching converter has a plurality of switching circuits coupled in parallel, and a plurality of control circuits configured in a daisy chain. Each control circuit receives a phase input signal, and provides a phase output signal and a switching control signal for controlling a corresponding switching circuit. One of the control circuits is a master control circuit, if a fault is detected by the master control circuit, then the master control circuit provides the phase output signal satisfying a master transfer type, and then the master control circuit changes to a slave control circuit.

2. 发明申请

US20200007023A1 MULTI-PHASE CONVERTER AND ASSOCIATED CONTROL CIRCUIT AND CONTROL METHOD FOR UNDERSHOOT IMPROVEMENT 审中-公开
公开(公告)号：US20200007023A1
公开(公告)日：2020-01-02
申请号：US16453936
申请日：2019-06-26
申请人： Chengdu Monolithic Power Systems Co. Ltd.
发明人： Xiaokang Wu , Lijie Jiang , Suhua Luo
IPC分类号： H02M1/084 , H02M3/157 , H02M3/158
摘要： A multi-phase converter has a plurality of switching circuits coupled in parallel and a control circuit. The control circuit provides a set signal to successively turn ON the switching circuits under power operation based on an output voltage, a reference signal and a nonlinear control signal. When a number of switching circuits under power operation decreases, the nonlinear control signal increases to a preset value from an initial value, and then the nonlinear control signal decreases to the initial value with a preset slew rate.

3. 发明申请

US20210288580A1 MULTIPHASE SWITCHING CONVERTERS WITH DAISY CHAIN CONFIGURATION AND ASSOCIATED FAULT PROTECTION METHOD 有权
公开(公告)号：US20210288580A1
公开(公告)日：2021-09-16
申请号：US17184093
申请日：2021-02-24
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Suhua Luo
IPC分类号： H02M3/158 , H02M1/084 , H02M1/088 , H02M1/32
摘要： A multiphase switching converter has a plurality of switching circuits coupled in parallel, and a plurality of control circuits configured in a daisy chain. Each control circuit receives a phase input signal, and provides a phase output signal and a switching control signal for controlling a corresponding switching circuit. One of the control circuits is a master control circuit, if a fault is detected by the master control circuit, then the master control circuit provides the phase output signal satisfying a master transfer type, and then the master control circuit changes to a slave control circuit.

4. 发明申请

US20210288579A1 MULTIPHASE SWITCHING CONVERTERS WITH DAISY CHAIN CONFIGURATION AND ASSOCIATED PHASE SHEDDING CONTROL METHOD 有权
公开(公告)号：US20210288579A1
公开(公告)日：2021-09-16
申请号：US17184052
申请日：2021-02-24
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Suhua Luo
IPC分类号： H02M3/158 , H02M1/084
摘要： A multiphase switching converter has a plurality of switching circuits coupled in parallel, and a plurality of control circuits configured in a daisy chain. Each control circuit receives a phase input signal, and provides a phase output signal and a switching control signal for controlling a corresponding switching circuit. When a current sense signal is less than a phase shedding threshold, and if a corresponding one of the control circuits is a last one in the daisy chain or if a pulse on the phase input signal lasts within a preset time period, then a corresponding one of the switching circuits stops a power output, and the phase output signal equals the phase input signal.

5. 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。

6. 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。

7. 发明授权

US10996732B2 Slew rate controlled power supply and associated control method 有权
公开(公告)号：US10996732B2
公开(公告)日：2021-05-04
申请号：US16361151
申请日：2019-03-21
申请人： Chengdu Monolithic Power Systems Co. Ltd.
发明人： Suhua Luo , Lijie Jiang
IPC分类号： G06F1/28 , G05F1/46
摘要： A power supply has a reference regulation circuit and a voltage regulator. The reference regulation circuit receives a VID code and a slew rate command from a processor and regulates a reference voltage based on the VID code and the slew rate command. The voltage regulator converts an input voltage to an output voltage based on the reference voltage. The circuit has a Σ-Δ modulation unit to generate a count duration signal based on a target count signal, wherein the target count signal is generated by dividing a voltage regulation step by the slew rate command, both the target count signal and the count duration signal are digital signals, the target count signal represents a real number having an integer part and a decimal part, the count duration signal represents an integer number, the circuit further regulates the reference voltage based on the count duration signal and the VID code.

8. 发明授权

US10951049B2 Battery charging circuit with improved system stability and control method thereof 有权
公开(公告)号：US10951049B2
公开(公告)日：2021-03-16
申请号：US16228241
申请日：2018-12-20
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Suhua Luo , Pengpeng Ma
IPC分类号： H02J7/00
摘要： A control method for controlling a battery charging circuit having at least one switch, includes: generating a first difference signal based on a charging current feedback signal and a charging current reference signal; generating a second difference signal based on a battery voltage feedback signal and a battery voltage reference signal; based on a battery voltage, selecting one of the first and second difference signals, and a ground voltage as a third difference signal; generating a bias signal by proportionally integrating the third difference signal; comparing the sum of a system voltage feedback signal and a ramp signal with the sum of the bias signal and a system voltage reference signal and generating a comparison signal; generating a control signal to control the at least one switch of based on the comparison signal and a constant time period control signal.

9. 发明申请

US20190207392A1 BATTERY CHARGING CIRCUIT WITH IMPROVED SYSTEM STABILITY AND CONTROL METHOD THEREOF 审中-公开
公开(公告)号：US20190207392A1
公开(公告)日：2019-07-04
申请号：US16228241
申请日：2018-12-20
申请人： Chengdu Monolithic Power Systems Co., Ltd.
发明人： Suhua Luo , Pengpeng Ma
IPC分类号： H02J7/00
CPC分类号： H02J7/007
摘要： A control method for controlling a battery charging circuit having at least one switch, includes: generating a first difference signal based on a charging current feedback signal and a charging current reference signal; generating a second difference signal based on a battery voltage feedback signal and a battery voltage reference signal; based on a battery voltage, selecting one of the first and second difference signals, and a ground voltage as a third difference signal; generating a bias signal by proportionally integrating the third difference signal; comparing the sum of a system voltage feedback signal and a ramp signal with the sum of the bias signal and a system voltage reference signal and generating a comparison signal; generating a control signal to control the at least one switch of based on the comparison signal and a constant time period control signal.

10. 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。

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