I accidentally damaged my Bosch cordless drill battery charger by hooking the charger's PCB's 12 volt lines directly to the 220V|50Hz AC mains.

The charger's model is AL 1110 CV https://www.amazon.co.uk/Bosch-POWER4ALL-Li-ion-Battery-Charger/dp/B0777RXTKJ

I suspect, that this IC is at fault:

Unknown IC type

I cannot find much info about it online.

Any help finding this IC (and what it does) or an equivalent alternative will be much appreciated!

Thank you

  • 1
    \$\begingroup\$ You are probably wasting your time - buy a new one. \$\endgroup\$
    – Andy aka
    Aug 17, 2020 at 13:43
  • \$\begingroup\$ It is rated 240V at the plug, why would you even consider that for bypassing to 12V. Toasted and no char heat marks? Nicely fused open.what about the blown Caps? If U don’t show more details this above you debug pay rate? \$\endgroup\$ Aug 17, 2020 at 13:51
  • \$\begingroup\$ I was mass changing some power tool plugs from UK to EU (Shuko) type, and accidentally, in a hurry, did not notice that this chargers transformer is inside the plug itself :) I see no other (visible) damage on the PCB, so my assumption is that this IC went bad. If it costs < 1-2 USD, why not give replacing it a try? Of course I'll buy a replacement charger if I don't think the time and money spent is worth :) It'll be much more helpful if someone can answer the original question - what kind of IC is this? \$\endgroup\$
    – 10caret100
    Aug 18, 2020 at 12:22
  • \$\begingroup\$ Its highly likely that it's a custom IC made for Bosch. Lack of an identifiable part number in high volume equipment usually means they do not want you to be able to repair it. You may be lucky, but, probably not. \$\endgroup\$
    – Russell McMahon
    Aug 28, 2020 at 10:01
  • \$\begingroup\$ Well, this looks very similar, but still no specs :( aliexpress.com/item/4000373583761.html \$\endgroup\$
    – 10caret100
    Aug 29, 2020 at 16:37


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