TPA3110D2: Max Peak Current Draw?

johny radio

Intellectual 860 points

Part Number: TPA3110D2

Tool/software:

The datasheet mentions

"peak currents expected for the amplifier"

What is the peak current-draw from the power supply? I cannot find this info in the datasheet.

I don't mean continuous. I mean brief transients in the audio.

I assume peak current is much higher than the continuous rating.

10 months ago

0 Wenbin Li1 10 months ago

TI__Intellectual 840 points

Hi Johny，

the peak current usually means the peak amplitude on the load

if you want to calculate the current from the power supply, you should take the efficiency in account.

0 johny radio 10 months ago in reply to Wenbin Li1

Intellectual 860 points

What's the formula in mono mode, to calculate current-draw?

30W / Vsupply x 1/efficiency?

30W / 24 V x (1 / 0.9)

= 1.39A ?

But this seems to be continuous output.

Does the same formula apply to peak transients?

Can peak transients exceed the rated amplifier power?

0 Wenbin Li1 10 months ago in reply to johny radio

TI__Intellectual 840 points

Hi Johny,

regarding the peak current on load, I usually use the peak output voltage/R, here the R could be load resistance for draft calculate. then in your formula, you can change the "30w" to (peak voltage*peak current) on load. this will be the transient current.

Br,

Wenbin

Audio

Audio forum

TPA3110D2: Max Peak Current Draw?