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TDA7491HV getting very hot?

Question asked by Rowe.Martin on May 15, 2017

I am having problems, with a TDA7491HV design (taken directly from the datasheet - Figure 50) and although it is working, the output inductors are getting very hot. Hot means ~85C with an ambient temp of 15C.

I have read elsewhere on this forum that someone has use (with success) a "filterless" output stage with the TDA7491LP.


Does anyone know if this approach is feasible for the TDA7491HV? There is no equivalent to Figure 34 in the TDA7491HV datasheet.


Best regards, Martin