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Part Number: TAS5414B-Q1
I am planning to use TAS5414B-Q1 in my system however, I wanted to check if I can use more than 2 channels in PBTL model as I am planning to output 150W but I wanted to check If I can parallel all 4 channels at 14.4V input voltage instead of 24V and achieve the 150W output power. Is a maximum of 2 channels allowed in Parallel?
For 150W output power with PVDD=14.4V, can you also share the impedance information of the load/speaker?
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when amplifier set to 2 channels parallel, one of the channel's feedback loop is disabled, becasue two feedback loop working togehter may have some unstable behavior. So from this point of view, 4 channels parallel is not a good way.
In reply to Dylan Yao:
I will add to Dylan's reply. As it is possible to parallel 4 channels on the TAS5414B-Q1, but it is not recommended, not only for the feedback, but the protections and load diagnostics can be compromised and not respond correctly. At 14.4Vdc, you would need a 1 ohm speaker to get to 150W.
Regards,Gregg ScottSenior Application EngineerMid Power Audio Amplifiers
In reply to Gregg Scott:
Thank you very much,
However, I have a query can I use channel 1&2 in parallel mode and output 150W and Parallel channel 3&4 in parallel and output another 150W. Can you kindly let me know if this is possible?
In reply to Naveesh Boppana:
According to the datasheet, the device can provide 150W at 10%THD into 2 ohms with a 24Vdc power supply when in PBTL. This will meet your requirement. Please note you will need to have a very good thermal management system in place for this power level.
So I can output 150W at 10%THD into 2 ohms with a 24Vdc power supply in PBTL(Channel1&2) and another 150W at 10%THD into 2 ohms with a 24Vdc power supply in PBTL(Channel3&4) total 300W output using 4 channels with 1&2, 3&4 in parallel?
Yes, You understand correctly.
Thank you :)
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