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公开(公告)号：US11863076B2
公开(公告)日：2024-01-02
申请号：US17574125
申请日：2022-01-12
发明人： Tai Fan , Kaijun Xie , Huaichao Zhang , Xiaoya Kuang , Yuan Cheng
CPC分类号： H02M3/33569 , H02M1/0064 , H02M1/327 , H02M3/156 , H02M3/335
摘要： The present invention provides a control device for an isolated converter, including a comparison module, which receives a load percentage of the isolated converter, compares the load percentage with a first preset threshold and a second preset threshold, and outputs a comparison result; and an adjustment module, which receives the comparison result and adjusts a switching frequency of a switching transistor of the isolated converter based on the comparison result, wherein when the load percentage is not greater than the first preset threshold value, the switching frequency is set to a first frequency value to prevent magnetic saturation of a transformer of the isolated converter, and when the load percentage is greater than the second preset threshold value and in a stable state, the switching frequency is set to a second frequency value, so that the temperature of the isolated converter does not exceed the maximum allowable temperature, wherein the first preset threshold is less than or equal to the second preset threshold, and the first frequency value is greater than the second frequency value.
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公开(公告)号：US20220224235A1
公开(公告)日：2022-07-14
申请号：US17574125
申请日：2022-01-12
发明人： Tai Fan , Kaijun Xie , Huaichao Zhang , Xiaoya Kuang , Yuan Cheng
IPC分类号： H02M3/335
摘要： The present invention provides a control device for an isolated converter, including a comparison module, which receives a load percentage of the isolated converter, compares the load percentage with a first preset threshold and a second preset threshold, and outputs a comparison result; and an adjustment module, which receives the comparison result and adjusts a switching frequency of a switching transistor of the isolated converter based on the comparison result, wherein when the load percentage is not greater than the first preset threshold value, the switching frequency is set to a first frequency value to prevent magnetic saturation of a transformer of the isolated converter, and when the load percentage is greater than the second preset threshold value and in a stable state, the switching frequency is set to a second frequency value, so that the temperature of the isolated converter does not exceed the maximum allowable temperature, wherein the first preset threshold is less than or equal to the second preset threshold, and the first frequency value is greater than the second frequency value.
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