Hello Team,
I am using TPA3136D2 in one of our design & facing the following issues :
(1) Sometime power amplifier is drawing too much current & it is shutting down. After probing it is observed that the DC level of the both output pins are not same (OUTNL & OUTPL). This could be reason of fault generation.
(2) We have shorted the Fault# and SD# pins to configure it in auto recovery mode & connected the same line to MCU. Pull up is given to make it default high.
(3) We used output LC filter of 15uH & 2.2uF, currently capacitor is of electrolytic type. After removing the output filter capacitors we observed that class D is not shutting down. Is it recommended to use non polarized ceramic cap or film cap? With the ceramic is it required to use some small resistance as the ESR of ceramic is low?
If required I can share the portion of the schematics with some expert in mail communication. Please suggest any improvement on the schematics can be done to solve the mentioned issues or in past this IC gave similar issues?
Thanks,
Sayantan Ghosh, Hardware Design Engineer - Robert Bosch.
Email : sayantan.ghosh@in.bosch.com
Phone : +918066571392
Mobile : +917708379876
