Monday, January 25, 2010
M (conversion ratio) of resonant converters
Can anyone help me with a doubt I have......we've learnt in class that for resonant converters the conversion ratio M evaluates as H(jw_s) and hence we concluded that to change the output voltage we vary the frequency rather than D as in hard-switched or PWM converters. That said, do we then operate these converters always with a duty cycle of D=0.5? Or does it matter if we operate at any other D?
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I believe he mentioned that D is alway set at 0.5. The control variable in hard switched PWM converters is the duty cycle..but in resonant converters its the frequency.
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