Powering a TDA7492

[SGr33n]

Hi,
I'd like to power a TDA7492 @ full power via LiPo. What's in your opinion the best choice?


1) using a 6S, but at full charge it would be 4,2v x6 = 25,2v, do you think it's too much?
2) using a 4S and tuning @ 24v via a boost converter. The doubt is, how much efficient is this solution? a 6A boost converter could be enough?

Thanks 🙂

 

[ubergeeknz]

6s, charge to 4.1v per cell. You'll also get longer cell life this way.

 

[SGr33n]

Thanks!
Unfortunately I just have a simple balance charger that's not regulable. Do you think I can fry it powering at 25.2v?
I see that many 7492 can handle 25.5v.

 

[ubergeeknz]

Actually, it's fine. Supply range goes to 26v for TDA7492 and absolute maximum rating is 30v

 

[SGr33n]

Good, thanks for your support 🙂

 

[Douglas Blake]

Here is a link to the Spec Sheet ... CLICK HERE

The absolute max voltage is specified at 30v
The Recommended voltage is specified at 8v to 26v.

You will be within the safe range for the chip ... but I would want to track temperature during testing. In my experience they're happier around 24v.