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about TDA7492P burn

410791550
Associate

‎2016-08-10 09:11 AM

Posted on August 10, 2016 at 18:11

hi,

   I had some questions when i use the TDA7492P. When I turn on the 12V power(connect to the PVCC)and don't connect the 5V(connect to the SVCC), the pin1 of TDA7492P will

immediately

burn( the pin1 will short with pin2/pin3) .  I don't connect the L2~L9 and the

speaker。

    I had test 4pcs TDA7492P, they are all this case。

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1 REPLY 1
Nickname1623_O
Associate II

‎2016-08-22 06:59 PM

Posted on August 23, 2016 at 03:59

hi Ya dong ,

your application circuitry is wrong , SVCC must be connected with a capacitor between VSS. rather than external power supply .

please follow the application schematic in datasheet .

you can find it in below link.

http://www.st.com/content/ccc/resource/technical/document/datasheet/35/01/97/6b/20/ce/40/6f/CD00211320.pdf/files/CD00211320.pdf/jcr:content/translations/en.CD00211320.pdf

Thanks

YT

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