Handsfree speaker structure

Antony Lin

Other Parts Discussed in Thread: TPS65950

Do we have any more description about the handsfree speaker amplifier (IHF) in TPS65950? I'm requested for more detail, such as why the output signals is in PWM format instead of analog format? Where can we find related information?

THanks,

Antony

over 16 years ago

0 Gandhar Dighe over 16 years ago

TI__Genius 15100 points

There is no additional information available on this. As you know that the Class-D used in this device does have BD modulation technique which gives PWM output. This is probably one of the very common ones.

I dont understand what is the goal to understand more details on this design and how is that going to affect your customers design. Whatever the customer needs is pretty much available in the data sheet.

Regards,

Gandhar.

0 Antony Lin over 16 years ago in reply to Gandhar Dighe

TI__Genius 13480 points

So, can you help to explain why the phase deifference is not conctantly @ 180 degree between the signals measured @ IHF_LEFT_P & IHF_LEFT_M ?

Thanks,

Antony

0 Gandhar Dighe over 16 years ago in reply to Antony Lin

TI__Genius 15100 points

Hi Antony,

Fig - 6 in the link may be helpful - http://focus.ti.com/lit/an/sloa119a/sloa119a.pdf

Regards,

Gandhar.

Power management

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Handsfree speaker structure