Minimal power supply for tpa3116d2

[Ensoniq]

I'm making 3 channel (2 ICs) amp (~20w x2, 40w).
I wanna built simplest/ cheapest power supply for it, without toroidal transformer. But not too cheap that it will make the amp noisy or anything

 

[rayma]

I'm making 3 channel (2 ICs) amp (~20w x2, 40w).
I wanna built simplest/ cheapest power supply for it, without toroidal transformer. But not too cheap that it will make the amp noisy or anything

The PS rejection is 60-70dB, and it needs only a single supply, so maybe a single 35A 100V bridge rectifier and a 22,000uF 35V cap will do.
The 75VA or larger transformer needs a 15VAC winding with a 5A secondary. Use a 5A slow blow fuse on the input.

http://www.mouser.com/ProductDetail/Fairchild-Semiconductor/GBPC3501/?qs=sGAEpiMZZMutXGli8Ay4kNmP4dVsHWrfenpPUkEqNXI%3d

http://www.mouser.com/ProductDetail/Panasonic/ECE-T1VA223EA/?qs=rMMd5vBiahoSXR2hvvc9Iw==

http://www.mouser.com/ProductDetail/Hammond-Manufacturing/182M15/?qs=bN4HulGPsrHCgoEm5oZfeg==

 

[29285]

take an ac-dc adapter from an old laptop or printer - they deliver a stable dc voltage and are SECURE. I would not endorse DIY-AC-Adapters for safety reasons.