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Flyback Snubber Design
消耗积分:5 |
格式:rar |
大小:554 |
2009-10-17
孙成红
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Many application notes and designs ignore the ringing
waveforms and operate the converter without addressing
the issue. There are two problems with this: firstly,
there is excessive voltage on the drain of the FET
which can lead to avalanche breakdown and eventually
failure of the device. Secondly, the ringing energy will
be radiated and conducted throughout the power supply,
load, and electronic system, creating noise issues
and even logic errors. The ringing frequency will also
show up as a peak of the EMI spectrum in both radiated
and conducted EMI.
waveforms and operate the converter without addressing
the issue. There are two problems with this: firstly,
there is excessive voltage on the drain of the FET
which can lead to avalanche breakdown and eventually
failure of the device. Secondly, the ringing energy will
be radiated and conducted throughout the power supply,
load, and electronic system, creating noise issues
and even logic errors. The ringing frequency will also
show up as a peak of the EMI spectrum in both radiated
and conducted EMI.
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