Hi all!
I'm thinking about building a class D power amp with a battery regulated PS.
Searching this forum didn't seem to come up with what I'm looking for.
My idea is to use LFP (or LiFePO4) batteries in a power amp where one would usually use largish smoothing capacitors. As far as I understand these batteries should store much more energy than caps, be very "silent", feature very low output impedance and maintain voltage even under sustained discharging.
With a trickle charging arrangement I shouldn't need lots of mAh so a series of AA size 3.2V 600mAh cells should do. About 20 in a series per DC rail should be more than enough for UCD400 or nc400 rail voltage.
So here's my questions 🙂
Am i forgetting or misunderstanding something important, or should this be possible to make work well (and potentially sound better than good caps...)?
Has this indeed been discussed elsewhere, and if so please let me know where to read up.
Never having worked with battery supplies or chargers, I am somewhat on deep water regarding the best way to charge the batteries...
Could I in principle configure a conventional linear supply or SMPS to charge the batteries conditioned that the batteries are kept charged to near their max capacity all the time? Or should I definitely go for a dedicated trickle charger circuitry where I can set charging voltage and max charging current? If so, does anyone know where and what to look for (probably has to be a ready made circuitry)?
best,
I'm thinking about building a class D power amp with a battery regulated PS.
Searching this forum didn't seem to come up with what I'm looking for.
My idea is to use LFP (or LiFePO4) batteries in a power amp where one would usually use largish smoothing capacitors. As far as I understand these batteries should store much more energy than caps, be very "silent", feature very low output impedance and maintain voltage even under sustained discharging.
With a trickle charging arrangement I shouldn't need lots of mAh so a series of AA size 3.2V 600mAh cells should do. About 20 in a series per DC rail should be more than enough for UCD400 or nc400 rail voltage.
So here's my questions 🙂
Am i forgetting or misunderstanding something important, or should this be possible to make work well (and potentially sound better than good caps...)?
Has this indeed been discussed elsewhere, and if so please let me know where to read up.
Never having worked with battery supplies or chargers, I am somewhat on deep water regarding the best way to charge the batteries...
Could I in principle configure a conventional linear supply or SMPS to charge the batteries conditioned that the batteries are kept charged to near their max capacity all the time? Or should I definitely go for a dedicated trickle charger circuitry where I can set charging voltage and max charging current? If so, does anyone know where and what to look for (probably has to be a ready made circuitry)?
best,