Other Parts Discussed in Thread: TPA3122D2 Hi,
I've just come across an issue related to BTL configuration of tpa3122d2 power amplifier.
I configure it as BTL mode except that i ground the minus input, which means i only one channel input signal.
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I built a board based on the TPA3122 diagram in the datasheet. It did not work, so I built another with exactly per the drawings, and also those from a kit (jerryselectrionics.com). It too does not work. Maybe someone can see an error if you have time…
Other Parts Discussed in Thread: TPA3122D2 good morning to all, I would like to ask for info on the TPA3122D2 in BTL configuration. I'm currently using the amp for a burglar alarm where I create square wave signals and send it through a pic18Fxx input…
hi
i m using 3211d2 id for amplification bt when i setup all connection it not work.
i used 1uf replace of .68uf and 2 parallel comp of .1uf replace .22uf.
Other Parts Discussed in Thread: TPA3122D2 I have designed a battery powered amp with the TPA3122D2. My requirement is to only use THT components. The amplifier is working as intended as long i don't touch anything with my fingers (or KO probes). As soon…
Brian,
I have some TPA3130 amp chips in a product demo that we've built. The amps run fine, but distort due to the output quiescent voltage being about 4VDC on each output (VCC is 24V). As you mention in the above post, I would expect the output…
Hi, Martin. As a follow-up, larger capacitors around the bootstrap pins could be a reliability concern. The TPA3122D2's bootstrap capacitor charging system was designed around the 220 nF capacitor, and increasing the bootstrap capacitor to 5× its intended…
Yes, the sense inputs were each connected to the appropriate output.
The fact that the balanced output circuit (at the link 5 posts above this), built with an OPA2132, produced a similar noise and heat, makes me wonder if I'm missing something very fundamental…
