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Forum Index : Electronics : Quality of IR2110 Fet DIP14 driver chips

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Clockmanfr

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Joined: 23/10/2015
Location: France
Posts: 437

Posted: 05:52am 01 Jun 2019

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Experiences with Poor quality components.

I have been doing some practical experimenting recently with the OzInverters.

I have had one making slightly more audible noise at the ferrite choke than normal.

I tried to track down the reason.

Over many hours the noise got a higher audible noise. Working in my workshop doing another project.

Then the AC 230va control circuit started misbehaving, a few hours later the toroid started hunting, then it went to a 290vac and I could no longer control the AC output.

Swapped out parts in a methodical way, the 8010 sub board unit, rebuilt the AC output circuit plus a new AC isolation transformer etc etc. Checked the toroid and hardware AC for any shorts etc etc.

Then as a last resort I swapped out the IR2110 driver chips, and hay presto the AC regulation returned, and the ferrite choke is as quite as a gentle bumble bee.

Those IR2110 were direct from China. The new ones I fitted were from RS, I also use Farnell now.

On the outside the chips all looked the same with the manufacturers marks, but obviously they are not.

I know, before you ask why I don't use the other driver chips variants that have been discussed here. Because I like to use what I have, that's if it works.

Everything is possible, just give me time.

3 HughP's 3.7m Wind T's (14 years). 5kW PV on 3 Trackers, (10 yrs). 21kW PV AC coupled SH GTI's. OzInverter created Grid. 1300ah 48v.

noneyabussiness
Guru

Joined: 31/07/2017
Location: Australia
Posts: 526

Posted: 06:30pm 01 Jun 2019

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I had almost exactly the same experience, ended up with ir2113 from x-on.. maybe try the less " popular " ir2113, usually means less counterfeits.. i can't see any difference other than higher voltage tolerance. .

I think it works !!

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