TAS5631 and mid-z startup

guillaume Riviere

Other Parts Discussed in Thread: TAS5631, TAS3308, TAS5342, TAS5162

I plan to use the TAS5631 drived by a TAS3308 DSP in a single ended configuration, the TAS3308 have a special startup sequence for SE configuration called mid-z, i want to know if the TAS5631 is compatible with this start-up sequence ?

Thank's

Best regard's

over 13 years ago

0 Kim Nordtorp Madsen over 13 years ago

TI__Expert 4320 points

Guillaume

The mid-z scheme of the TAS3308 is intended for the "open loop" power stages like TAS5342, TAS5162 etc.

The TAS5631 uses a different scheme and employs feedback and has its ovn internal single ended start scheme. The single ended start scheme has it difficulties starting completely click & pop free as one need to get the AC-coupling capacitors charged. Do you have special requirements to select the TAS5631?

An alternative could be to use the TAS3308 with a TAS5612 in BTL mode, or TAS5342 in BTL mode

rgds,

Kim N Madsen

0 guillaume Riviere over 13 years ago in reply to Kim Nordtorp Madsen

Prodigy 140 points

Hi kim

Thanks for your fast answer, we selected the TAS5631 for his ability to have low cost high power 2.1 configuration, but in this configuration 2 output are SE, so there no way to be completely click & pop freewith this component ?, there a way to improve it ?

Thanks

Regards

0 Kim Nordtorp Madsen over 13 years ago in reply to guillaume Riviere

TI__Expert 4320 points

Guillaume

what are you requirements for output power and load impedance?

rgds,

Kim

0 guillaume Riviere over 13 years ago in reply to Kim Nordtorp Madsen

Prodigy 140 points

Hi kim

In fact we already made a proto board with the TAS5631, so i want to check first what level of clic, plop we can achieve with the 2.1 configuration before looking for a replacement solution.

There some recomandation to minimize the plop, clic with the TAS5631 ?

Best regard

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TAS5631 and mid-z startup