Hi, Minjie,

Welcome to E2E, Thanks for your interest in our products!.

I think TIDA-00404 is a good solution, the TAS5754M can drive 15W into 4 Ohm without issues. About the Mono amplifier, I would like to mention that driving 30W with 4 Ohm load is complicated with 12V power supply. The power delivered to the speaker under these circumstances is about 18W (without considering efficiency factor). So, in order to get 30W, you may need to decrease the speaker impedance in the mono device to 2 Ohm (supported by the TAS5760M) or, increase the power supply. 

Best Regards,

  -Diego Meléndez López
   Audio Applications Engineer

Hi Diego,

So, if we want to meet the 30W for bass, we'd better select the speaker impedance as 2 Ohm? Or, add the power supply to 15V or even higher?

By the way, I know TAS5760M should be set as mono PBTL, but I'm not sure how to get the 18W when pushing 12V power supply to 4 Ohm speaker under these circumstances. Could you help me to get it?

2 Ohm speaker is available for us later. And how can I get the TIDA-00404 demo? I hope I can try it.

Br and Thanks!

Hi, Minjie,

I think it depends on what is more convenient for your application. Having larger power supply may be better as the amplifier is more efficient with 4 Ohm than with 2 ohm load, but this may not be compliant with your end system.

The approach of 18W is made theoretically to demonstrate the maximum "ideal" power of the amplifier under 12V with 4Ohm. The calculation is made without considering the RDSon impedance and efficiency factor.

I am investigating about the TIDA-00404 availability, so I will get back to you as soon as I receive any update. Another good solution would be to use two TAS5754M devices. This amplifier features pre-reconfigured advanced processing for Mono and Stereo applications called HybridFlows, also, we have 2.1 application well documented in the datasheet of the amplifier. The EVM of the TAS5754M comes in a  2.1 configuration and is easily controlled with our PurePath Console Software. 

Best Regards,

  -Diego Meléndez López
   Audio Applications Engineer

Dear,

It's complicated for us to add the power supply and more convenient to select the suitable 2 Ohm imp speaker. Could you help get the "ideal" power of the amplifier under 12V with 4Ohm in mono bass output?

Also, two TAS5754M devices solution seems available. But firstly I want to apply for the TIDA-00404. It should be more compliant with our system.

Hi, Minjie,

Ideally, the maximum theoretical power of an amplifier with 12V in 4 Ohm load in PBTL mode, is calculated from the next formula:

So, for 4 and 2 ohm load with 12V PVDD:

By the way, for the record, can you please share more information of your application?, like the estimated production date, volume and end system requirements? 

Thanks and Best Regards,

  -Diego Meléndez López
   Audio Applications Engineer

Hi Diego,

We will start the product with 2.1 loudspeaker system in August. The first step is selecting the suitable end audio speaker system. We holp it can meet the dolby requirement for 2.1 loudspeaker.