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公开(公告)号：US11251700B2
公开(公告)日：2022-02-15
申请号：US16426126
申请日：2019-05-30
发明人： Kailang Hang , Liangwei Sun
摘要： A voltage regulation circuit can include: a power stage circuit with a single inductor and a plurality of output circuits; each output circuit having an output control switch configured to control a duration of an on time of the output circuit, and an output switch control circuit configured to control the output control switch in accordance with an output voltage sampling signal, a reference current signal that represents an output current of the output circuit, and a clock signal, in order to maintain an output voltage of the output circuit as constant and to decrease interference from load variations of any other of the plurality of output circuits; and where the output control switches are controlled to be on in sequence in each switching period.
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公开(公告)号：US20210410244A1
公开(公告)日：2021-12-30
申请号：US17474625
申请日：2021-09-14
发明人： Fusong Huang , Kailang Hang
摘要： A method of controlling a switching converter having a plurality of interleaved parallel branches, can include controlling conduction phases of power switches of the plurality of interleaved parallel branches to be overlapped when a load changes from a light load to a heavy load, in order to improve dynamic response performance of the switching converter. A control circuit for a switching converter with a plurality of interleaved parallel branches, can control conduction phases of power switches of the interleaved parallel branches to be overlapped when a load changes from a light load to a heavy load, in order to improve dynamic response performance of the switching converter.
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公开(公告)号：US20200100339A1
公开(公告)日：2020-03-26
申请号：US16564091
申请日：2019-09-09
发明人： Fusong Huang , Kailang Hang
IPC分类号： H05B33/08
摘要： A method of controlling a switching converter having a plurality of interleaved parallel branches, can include controlling conduction phases of power switches of the plurality of interleaved parallel branches to be overlapped when a load changes from a light load to a heavy load, in order to improve dynamic response performance of the switching converter. A control circuit for a switching converter with a plurality of interleaved parallel branches, can control conduction phases of power switches of the interleaved parallel branches to be overlapped when a load changes from a light load to a heavy load, in order to improve dynamic response performance of the switching converter.
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公开(公告)号：US20190089251A1
公开(公告)日：2019-03-21
申请号：US16191592
申请日：2018-11-15
发明人： Kailang Hang , Liangwei Sun
摘要： A converter can include: (i) a first switch having a first terminal for receiving an input voltage, and a second terminal coupled to a first terminal of a second switch; (ii) an inductor having a first terminal coupled to a common node of the first and second switches, and a second terminal coupled to a first terminal of a third switch, where second terminals of the second and third switches are coupled to ground; and (iii) a plurality of output channels coupled to a common node of the inductor and the third switch, where the converter operates in a buck-boost mode, a buck mode, or a boost mode based on the relationship between the input voltage and output voltages of the plurality of output channels.
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公开(公告)号：US11818815B2
公开(公告)日：2023-11-14
申请号：US17474625
申请日：2021-09-14
发明人： Fusong Huang , Kailang Hang
摘要： A method of controlling a switching converter having a plurality of interleaved parallel branches, can include controlling conduction phases of power switches of the plurality of interleaved parallel branches to be overlapped when a load changes from a light load to a heavy load, in order to improve dynamic response performance of the switching converter. A control circuit for a switching converter with a plurality of interleaved parallel branches, can control conduction phases of power switches of the interleaved parallel branches to be overlapped when a load changes from a light load to a heavy load, in order to improve dynamic response performance of the switching converter.
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公开(公告)号：US11147132B2
公开(公告)日：2021-10-12
申请号：US16564091
申请日：2019-09-09
发明人： Fusong Huang , Kailang Hang
摘要： A method of controlling a switching converter having a plurality of interleaved parallel branches, can include controlling conduction phases of power switches of the plurality of interleaved parallel branches to be overlapped when a load changes from a light load to a heavy load, in order to improve dynamic response performance of the switching converter. A control circuit for a switching converter with a plurality of interleaved parallel branches, can control conduction phases of power switches of the interleaved parallel branches to be overlapped when a load changes from a light load to a heavy load, in order to improve dynamic response performance of the switching converter.
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7.发明申请OVER VOLTAGE PROTECTION CONTROL METHOD AND CIRCUIT FOR FOUR-SWITCH BUCK-BOOST CONVERTER 审中-公开用于四开关升压转换器的电压保护控制方法和电路公开(公告)号：US20170063238A1
公开(公告)日：2017-03-02
申请号：US15349108
申请日：2016-11-11
发明人： Kailang Hang , Liangwei Sun
CPC分类号： H02M3/1582 , H02M1/32 , H02M3/158
摘要： In one embodiment, a method of over voltage protection control can include: (i) determining whether an output voltage of a buck-boost converter is in an over voltage condition, where the buck-boost converter includes a first switch coupled to an input terminal and an inductor, a second switch coupled to ground and a common node of the first switch and the inductor, a third switch coupled to ground and a common node of a fourth switch and the inductor, where the fourth switch is coupled to an output terminal of the buck-boost converter; and (ii) simultaneously controlling the first, second, third, and fourth switches in the buck-boost converter by turning on the second and third switches, and turning off the first and fourth switches, in response to the over voltage condition.
摘要翻译： 在一个实施例中，过电压保护控制的方法可以包括：（i）确定降压 - 升压转换器的输出电压是否处于过电压状态，其中降压 - 升压转换器包括耦合到输入端的第一开关 以及电感器，耦合到地的第二开关和第一开关和电感器的公共节点，耦合到地的第三开关和第四开关和电感器的公共节点，其中第四开关耦合到输出端子 的降压 - 升压转换器; 以及（ii）通过接通第二和第三开关同时控制降压 - 升压转换器中的第一，第二，第三和第四开关，以及响应于过电压状态而关断第一和第四开关。
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公开(公告)号：US20150145490A1
公开(公告)日：2015-05-28
申请号：US14547034
申请日：2014-11-18
发明人： Kailang Hang , Liangwei Sun
IPC分类号： H02M3/158
CPC分类号： H02M3/158 , H02M2001/0032 , Y02B70/16
摘要： In one embodiment, a method of controlling a switching power supply can include: (i) generating an ideal on time signal according to an input voltage and an output voltage of the switching power supply; (ii) generating a ripple voltage signal having a predetermined constant value when a power switch of the switching power supply is on, and a linearly decreasing value when the power switch is off; (iii) generating a regulating voltage signal according to an output voltage sense signal and the ripple voltage signal; (iv) generating a regulating control signal by comparing the regulating voltage signal against a first reference signal; (v) generating an on time control signal according to the regulating control signal and the ideal on time signal; and (vi) generating a driving signal according to the on time control signal for driving the power switch.
摘要翻译： 在一个实施例中，控制开关电源的方法可以包括：（i）根据开关电源的输入电压和输出电压产生理想的导通时间信号; （ii）当所述开关电源的电源开关导通时，产生具有预定常数值的纹波电压信号，以及当所述电源开关断开时产生线性减小值; （iii）根据输出电压感测信号和纹波电压信号产生调节电压信号; （iv）通过将调节电压信号与第一参考信号进行比较来产生调节控制信号; （v）根据调节控制信号和理想的接通时间信号产生接通时间控制信号; 和（vi）根据用于驱动电源开关的接通时间控制信号产生驱动信号。
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9.发明申请OVER VOLTAGE PROTECTION CONTROL METHOD AND CIRCUIT FOR FOUR-SWITCH BUCK-BOOST CONVERTER 有权用于四开关升压转换器的电压保护控制方法和电路公开(公告)号：US20150123631A1
公开(公告)日：2015-05-07
申请号：US14533257
申请日：2014-11-05
发明人： Kailang Hang , Liangwei Sun
CPC分类号： H02M3/1582 , H02M1/32 , H02M3/158
摘要： In one embodiment, a method of over voltage protection control can include: (i) determining whether an output voltage of a buck-boost converter is in an over voltage condition, where the buck-boost converter includes a first switch coupled to an input terminal and an inductor, a second switch coupled to ground and a common node of the first switch and the inductor, a third switch coupled to ground and a common node of a fourth switch and the inductor, where the fourth switch is coupled to an output terminal of the buck-boost converter; and (ii) simultaneously controlling the first, second, third, and fourth switches in the buck-boost converter by turning on the second and third switches, and turning off the first and fourth switches, in response to the over voltage condition.
摘要翻译： 在一个实施例中，过电压保护控制的方法可以包括：（i）确定降压 - 升压转换器的输出电压是否处于过电压状态，其中降压 - 升压转换器包括耦合到输入端的第一开关 以及电感器，耦合到地的第二开关和第一开关和电感器的公共节点，耦合到地的第三开关和第四开关和电感器的公共节点，其中第四开关耦合到输出端子 的降压 - 升压转换器; 以及（ii）通过接通第二和第三开关同时控制降压 - 升压转换器中的第一，第二，第三和第四开关，以及响应于过电压状态而关断第一和第四开关。
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公开(公告)号：US20230380039A1
公开(公告)日：2023-11-23
申请号：US18144933
申请日：2023-05-09
发明人： Chiqing Fang , Zhiwei Xu , Kailang Hang , Chen Zhao
IPC分类号： H05B47/14
CPC分类号： H05B47/14
摘要： A method of driving a switching element in a switching circuit, where the switching element comprises a plurality of power transistors coupled in parallel, can include: determining a state of a load in the switching circuit; decreasing a driving voltage of at least one power transistor in order to reduce driving loss of the switching element when a load is in a first load state; and maintaining driving voltages of the plurality of power transistors at a first threshold when the load is in a second load state.
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