Phase-shift full-bridge converter circuit and control method
A technology of converting circuits and phase-shifting full bridges, applied in control/regulation systems, DC power input conversion to DC power output, electrical components, etc. Reduce the efficiency of the whole machine and other issues to achieve the effect of reducing the EMI of the whole machine, reducing switching losses, and improving the efficiency of the whole machine
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[0033] The present invention will be further described in detail below in conjunction with specific embodiments. However, it should not be understood that the scope of the above-mentioned subject of the present invention is limited to the following embodiments, and all technologies implemented based on the content of the present invention belong to the scope of the present invention.
[0034] The control method of the phase-shifted full-bridge conversion circuit of the present invention, see figure 2 with image 3 , Divide a working cycle of the phase-shifted full-bridge conversion circuit into the following stages: Among them, G1, G2, G3, G4 are the applied gate voltages from MOS tube one to MOS tube four (Q1-Q4), and iL is the transformer primary The current of the resonant inductor L1 on the side, VL is the voltage of the resonant inductor L1, VT is the voltage on the primary side of the transformer T1, Vin is the input DC voltage, Vo is the output DC voltage, and VD is figu...
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