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Inductor current zero-crossing detection method and circuit and switching power supply thereof
Inductor current zero-crossing detection method and circuit and switching power supply thereof
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机译:电感电流过零检测方法,电路及其开关电源
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摘要
In one embodiment, a method of detecting an inductor current zero-crossing in a switching power supply, can include: (i) determining a present output voltage of the switching power supply; (ii) generating a zero-crossing detection threshold voltage according to the output voltage; and (iii) generating a zero-crossing detection signal according to the zero-crossing detection threshold voltage, where the zero-crossing detection signal is used to turn off a synchronous rectifier switch in the switching power supply.
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