I need to supress voltage spikes at the output of a secondary in a flyback transformer due to a high secondary current flowing into the capacitor's ESR during the transistor off time.
Question is, how do I approach designing an LC filter at the secondary to supress the voltage spikes? Do I just look at this from a straight foward transfer fuction point a view? Such as:
**broken link removed**
Given that H(s) is the amount of attenuation I want at a particular frequency? For example if I wanted to attunuate the voltage spikes by half @ 50Khz (my switching frequency), would I just arbitarily choose an LoCo combination that would yield a 0.5 (absolute) gain at omega = (2)(pi)(50k)?
Question is, how do I approach designing an LC filter at the secondary to supress the voltage spikes? Do I just look at this from a straight foward transfer fuction point a view? Such as:
**broken link removed**
Given that H(s) is the amount of attenuation I want at a particular frequency? For example if I wanted to attunuate the voltage spikes by half @ 50Khz (my switching frequency), would I just arbitarily choose an LoCo combination that would yield a 0.5 (absolute) gain at omega = (2)(pi)(50k)?