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Issue with ST1CC40 in eDesign Studio

Question asked by electrophile on Feb 17, 2016
Latest reply on Feb 20, 2016 by electrophile
I'm trying to design a constant current driver in eDesign Studio using the ST1CC40DR chip. I've set my output requirements to 4.8V and 1.2A and the input is 12V DC. With a 2% LED ripple current and 10% inductor ripple current, I was shown the inductor values of 33uH, input capacitor of 4.7u and an output capacitor of 1.5u. However, when I mark these values as 'Locked' and click on redesign from the top menu, it shows me 2x68u as the output capacitors. Which are the right values?

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