Power supply and pulse width modulation generating method and device
A pulse width modulation and signal technology, applied in the field of power supply, can solve the problem of large turn-on loss of switching tubes, and achieve the effect of reducing turn-on loss and improving turn-on efficiency
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[0026] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0027] In the method for generating a pulse width modulation signal provided in the embodiment of the present invention, the generated pulse width modulation signal is mainly used as a driving signal for the switching tube in the FLYBACK conversion circuit, so that the switching tube is turned on at the lowest voltage as much as possible, so that Reduce the loss caused by the switch tube turning on.
[0028] figure 1 It is a flowchart of a method for generating a pulse width modulation signal provided by an embodiment of the present invention. Such as figure 1 As shown, the method for generating a pulse width modulation signal includes: Step 11 to Step 15.
[0029] In step 11, according to the first preset value, the first duty cycle, the second duty cycle and the resonance cycle, set the moment ...
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