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Power/Alternative Energy  

Power tip: Filter for low-noise power supply

Posted: 03 Jan 2013  Print Version  Bookmark and Share Subscribe 

Keywords:power supply  output ripple voltage  switching frequency 

[Summary of tips] Some low-noise applications may need the power supply output ripple voltage to be less than 0.1 per cent of the output voltage. These low ripple requirements easily can translate into filter attenuations of significantly greater than 60 dB, which cannot be practically met with a single stage.In this example, we consider a 570kH......
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