TDA5051 for 24VAC app

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TDA5051 for 24VAC app

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pascal_bamford
Contributor I

I've assembled the reference design (fig. 15 of datasheet) intended for 240VAC and am attempting to use it for an application (irrigation) on a 24VAC line. I'm a bit stuck on the design changes needed. The receiver detects bytes however the messages are highly corrupted. Is it a simple matter of changing the value of the first 47nF coupling capacitor for this lower voltage application? Thanks!

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guoweisun
NXP TechSupport
NXP TechSupport
Hi
Please refer to UM10422 page11 Figure10 for your schematic design!
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