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公开(公告)号：US20210282241A1
公开(公告)日：2021-09-09
申请号：US17331260
申请日：2021-05-26
发明人： Xiaoru GAO , Shungen SUN , Fuqiang ZHANG , Xiaohui CAI
IPC分类号： H05B45/14 , H05B45/325 , H05B45/3725 , H03K5/156 , H02M1/08
摘要： A control circuit, a chip and a control method are disclosed. The control circuit includes: an adjustment signal generation unit configured to detect an electrical signal reflecting a power supplied to a load under control of a current value of a reference signal, generate a feedback signal and output an adjustment signal based on both the feedback signal and the reference signal; and a control unit coupled to the adjustment signal generation unit and configured to control the switching circuit on and off based on the adjustment signal. With the generated adjustment signal that reflects a change in an adjustment metric indicated in the reference signal, the control circuit and the driving system can be adapted in real time to the specifications of any AC power standard. Moreover, much more granular adjustments can be made in the power supplied to the load.
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2.发明申请公开(公告)号：US20190335563A1
公开(公告)日：2019-10-31
申请号：US16459321
申请日：2019-07-01
发明人： Weijia YU , Minmin FAN , Feng QI , Shungen SUN , Fuqiang ZHANG
IPC分类号： H05B33/08
摘要： The present disclosure provides a protection circuit, a drive system, a chip and a circuit protection method, and a drive method. The protection circuit can be used in a circuit system in which a load is driven by a switch circuit, and acquire a voltage signal reflecting the voltage of a power supply bus on which the load located and generate a detection signal, and control the switch circuit to maintain a forcible non-conductive state within a protection period when detecting that the voltage of the detection signal satisfies a preset voltage warning condition. The present application solves the problem of circuit protection of DC-powered electronics in the prior art.
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公开(公告)号：US20210194350A1
公开(公告)日：2021-06-24
申请号：US17193650
申请日：2021-03-05
发明人： Fuqiang ZHANG , Xiaoru GAO
IPC分类号： H02M1/15 , H05B45/36 , H05B45/3725
摘要： A low-pass filter, a switching control circuit, a driving system, a chip and methods are disclosed. The low-pass filter performs digital differential-integral process on a voltage of an acquired analog signal and a predefined reference voltage to generate differential-integral signals, accumulates a count of the differential-integral signals, and convert the result to an analog signal. By performing differential-integral process accumulating a count of the differential-integral signals, a low-pass filtered signal is obtained in a way that solves the problem of low integrity of circuits in conventional driving systems, reduces the complexity of external circuits for such driving systems and increases their circuit stability.
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4.发明申请公开(公告)号：US20190335562A1
公开(公告)日：2019-10-31
申请号：US16230882
申请日：2018-12-21
发明人： Weijia YU , Minmin FAN , Feng QI , Shungen SUN , Fuqiang ZHANG
IPC分类号： H05B33/08
摘要： The present disclosure provides a protection circuit, a drive system, a chip and a circuit protection method, and a drive method. The protection circuit can be used in a circuit system in which a load is driven by a switch circuit, and acquire a voltage signal reflecting the voltage of a power supply bus on which the load located and generate a detection signal, and control the switch circuit to maintain a forcible non-conductive state within a protection period when detecting that the voltage of the detection signal satisfies a preset voltage warning condition. The present application solves the problem of circuit protection of DC-powered electronics in the prior art.
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