tpa3125d2 power requirements

michele fregoni

Prodigy 70 points

Other Parts Discussed in Thread: TPA3125D2

How many Ampere it will draw ?

over 7 years ago

Peter Cao over 7 years ago

TI__Expert 5000 points

Hi, Michele

TPA3125D2 is 10w/ch (SE) into an 8ohm load from 24V supply and 20w (BTL) into and 8ohm load from a 24V supply.

The output power mentioned in above sentence are rms power.

The over current protection trigger point is about 5.7A

michele fregoni over 7 years ago in reply to Peter Cao

Prodigy 70 points

Thanks for your quick reply, but my question is about power supply. I know that is 24V but how many Amperes? I need this info cause I need a power supply for both TPA and preamp.

Peter Cao over 7 years ago in reply to michele fregoni

TI__Expert 5000 points

It depends on your application case? How much power are you need? What is you load impedance?

michele fregoni over 7 years ago in reply to Peter Cao

Prodigy 70 points

8ohm btl. Simple 2 stage fet preamp @ 15V for guitar use. Now I use a 24V 3A switching power supply and it's OK, but if I want to insert a reverb I need 100ma to proper operation of reverb. So I don't know if my 3A power supply (less 100ma of reverb and less 20 - 30 ma of FET preamp) are ok for TPA to operate.

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tpa3125d2 power requirements