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公开(公告)号：US20220166325A1
公开(公告)日：2022-05-26
申请号：US17525104
申请日：2021-11-12
发明人： Siran Wang
摘要： A multi-converter switching power supply includes a first switching converter with a first output capacitor, a second switching converter with a second output capacitor, a bypass switch coupled across the second output capacitor, and a bypass control circuit for controlling the bypass switch. Input terminals of the first and switching converters are coupled in parallel, while output terminals of the first and switching converters are coupled in series to provide a total output voltage to a load. When detecting that the second output voltage approaches a negative voltage, the bypass control circuit turns on the bypass switch, so as to protect the second output capacitor from being damaged by a reverse DC voltage.
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公开(公告)号：US11689109B2
公开(公告)日：2023-06-27
申请号：US17525104
申请日：2021-11-12
发明人： Siran Wang
CPC分类号： H02M3/33523 , H02M1/08 , H02M3/33515
摘要： A multi-converter switching power supply includes a first switching converter with a first output capacitor, a second switching converter with a second output capacitor, a bypass switch coupled across the second output capacitor, and a bypass control circuit for controlling the bypass switch. Input terminals of the first and switching converters are coupled in parallel, while output terminals of the first and switching converters are coupled in series to provide a total output voltage to a load. When detecting that the second output voltage approaches a negative voltage, the bypass control circuit turns on the bypass switch, so as to protect the second output capacitor from being damaged by a reverse DC voltage.
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公开(公告)号：US20220103078A1
公开(公告)日：2022-03-31
申请号：US17474698
申请日：2021-09-14
发明人： Zilin Fan , Guangzhuo Li , Siran Wang
摘要： A control circuit and control method for an interleaved switching converter having a first and second interleaved voltage regulating circuit. The control method is: controlling a first switch of the first voltage regulating circuit operating in quasi-resonant mode, turning ON a second switch of the second voltage regulating circuit after the first switch is turned ON for a half switching period, generating a current sensing signal by detecting a current flowing through the second switch, generating a peak signal, wherein the peak signal is adjusted when a voltage across the second switch is higher than a voltage reference at the time the second switch is turned ON, and turning OFF the second switch when the current sensing signal increases to the peak signal.
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公开(公告)号：US11695319B2
公开(公告)日：2023-07-04
申请号：US17474698
申请日：2021-09-14
发明人： Zilin Fan , Guangzhuo Li , Siran Wang
CPC分类号： H02M1/0043 , H02M3/285 , H02M3/33507 , H02M3/33515
摘要： A control circuit and control method for an interleaved switching converter having a first and second interleaved voltage regulating circuit. The control method is: controlling a first switch of the first voltage regulating circuit operating in quasi-resonant mode, turning ON a second switch of the second voltage regulating circuit after the first switch is turned ON for a half switching period, generating a current sensing signal by detecting a current flowing through the second switch, generating a peak signal, wherein the peak signal is adjusted when a voltage across the second switch is higher than a voltage reference at the time the second switch is turned ON, and turning OFF the second switch when the current sensing signal increases to the peak signal.
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