domingo, 28 de julho de 2024
反激MOS管上的波形分析,反激工作原理-Waveform analysis on flyback MOSFET, flyback working principle.
Like other converters a
yback converter has two operating modes; continuous
conduction mode (CCM) and discontinuous conduction mode (DCM). The two
operation modes have dierent transfer equations and dierent current and voltage
wave forms. Therefore, from a design point of view it is important to analyse
the current and voltage that the electric components in the converter experience.
Particularly the current
owing through the circuit, voltage across the switch and
the diode [2]. The magnetizing inductance and the load current determines the
operation mode of the converter.
During the analysis of the dierent conduction modes of the converter, the following
assumptions will be made [5].
The converter is operating in steady state
The converter is ideal, that is the input power is equal to the output power
Leakage inductance, stray capacitors and stray resistances are neglected.
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