A fast transient response digital power factor converter and its control method
A digital power, transient response technology, applied in the conversion of AC power input to DC power output, output power conversion devices, sustainable manufacturing/processing, etc., can solve the problem of affecting the transient response performance of digital power factor correction converters problems, to achieve scalability, portability, superior overall performance, and improved power factor values.
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[0027] figure 1 Shown is the inductor current waveform of the DCM mode (Discontinuous Current Mode) power factor correction converter. During the conduction period of the switch tube, the voltage value at both ends of the inductor is V in , the inductor current is The linear rising slope rises from zero current to iL(pk) , the rise time is d 1 T s , when the switch tube is turned off, the voltage across the inductor is V in -V o , the inductor current is The linear descending slope is given by i L(pk) Falling to zero current, the fall time is d 2 T s , at d 3 T s During the time period, the inductor current is kept at a zero current state.
[0028] The overall diagram of the digital power factor converter with high power factor and fast transient response of the present invention is as follows figure 2 As shown, it includes EMI filter, diode rectifier circuit, Boost converter power stage main topology, first and second voltage dividing units, first, second and th...
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