How I Can Bridge This

[broka]

hey friends, i have two STK4050V, and i have this diagram, but , i need bridge this power amplifier, for get more power..how i can bridge this CI???????

 

[MikeB]

I guess, forget it... Datasheet says: "Recommended Operational Conditions, RL = 8ohm"
Bridged operation halfs the load seen by the amp. Bridging this chip is likely to overload it.

THD, 0.08% 1W 1khz into 8ohm non inductive, are they kidding ?
I would accept that without current mirror, not with...

Mike

 

[jerluwoo]

I once had a Panasonic stereo using a stk4131II which is a 20+20 watt version of this chip. I bridged it. It lived about 2 hours.

 

[lineup]

.

as said, bridge would override currents output
that is good for this IC

recommended voltage supply is +-66 Volt
for deliver something like 200 watt into 8 ohm
even if some data is tested by using +-80 Volt
and absolute max is +-95 Volt

possibly
you could parallel two STK4050V in some clever way
and so get lots of power into 4 ohm

but there are better options for get same output power in 4 ohm
by other kits and projects

 

[broka]

clear, do I like the idea of other projects, but do I have in my power these two integrated, but is the question, do you have some diagram to be able to Bridge these CI?..., I refer that I can get myself several of these CI, but I would like to know as the bridge, or that somebody becomes trained a diagram???

I would like to make bridge tests...

 

[MikeB]

If you have 2 of them, build a stereo amp ?

Mike

 

[jerluwoo]

It may be possible to bridge them in this manner and have them survive into 8 ohms only but no garentees. Requires 4 of them.

 

[broka]

no, I want to make a bridge, but that it is mono,i want mono phonic amplifier, not that it is stereo, the idea it is to add 200w + 200w in a single speaker...thanks

 

[broka]

jerluwoo:

but if I require 4 of these integrated, then which serious the complete connection of the CI, since each CI, it has 18 pins??????

 

[Leolabs]

Hi,broka.You should get more chips and configure them in BPA.

 

[broka]

what is BPA?, can you give me some link about BPA??...

 

[jerluwoo]

Refer to your own datasheet link. It gives an entire circuit for 1 chip. duplicate 4 times then connect them as shown. I used the same values for those parts given on the datasheet and added the output and feedback resistors from noninverting to inverting input on the lower. Easy enough.

 

[broka]

then, according to the diagram that your you sent me, will I have to make it 4 times??, with 4 STK4050V???

 

[jerluwoo]

Yep four single channels.