LNK3202 for HV Buck but with reduced bootstrap capacitor?
Posted by: treez
on
Hi,
My company are using LNK3202 as a HV Buck. UK Mains down to 12V.
They have accidentally put C3 (below on page 5) as 220nF MLCC instead of a 10uF electrolytic.
They have shipped many products like this by accident.
What could be the possible effects?
Page 5 schem
https://www.power.com/sites/default/files/documents/linkswitch-tn2_family_datasheet.pdf
Hi Treez,
Thank you for your continued support of Power Integrations' solutions.
On page 5 of the datasheet, C3 is referenced as the feedback capacitor, which works to provide a "sample and hold" function, as described on page 6 of the device datasheet. The recommended value for this feedback capacitor is between 10 µF and 22 µF. Using smaller values may result in poor output voltage regulation.