Effect of change in Switching frequency ???

[apocalipsis1234]

I am reading tech specs of TDA7498E, and in the section: Switching frequency it said:

min 240 max 400

fSW= 106/ ((16 * ROSC+ 182) * 4) kHz, fSYNCLK= 2 * fSW with R3 = 39 kΩ

Can someone tell me:

a. Whats the efect of change Switching frequency??
b. What is fSYNCLK???

Thanks

 

[PetruV]

Increasing switching frequency increases power consumption and to some extent make highs sound more detailed.
Sync input is used to sync multiple chips up so they dont interfere

 

[apocalipsis1234]

Thanks... another linked question...

¿how can limit output of one amplifier??.... for example, tda7492, sure electronics have two versions of the same chipset: 2x25 and 2x50... as tda7492 is by default 2x50 ¿how can limit the output?

 

[Julf]

Increasing switching frequency increases power consumption and to some extent make highs sound more detailed.

Why would that be? What, in your opinion, makes highs more "detailed"?

 

[vacuphile]

Probably it says that the frequency of the synchronization signal is twice the switching frequency, but I guess the specsheet could tell you more.