Trying to use a car 12V to 20V (laptop charger) for my TS100 solder iron and trying to find out why it shuts off, i blew up some component(s). In trying to recover from that, created a partly schematic, but key is a chip in between PWM of microprocessor and P-channel FET.
I've searched on internet and I could not find it. does one know what this exactly is?
Based on my reverse engineered (partly) schema, it could be a NPN/PNP transistor pair with base and emittor connected, and Collector of NPN to +20V, and Collector of PNP connected to ground. but that's just a best guess, a full driver IC also would be an option. An example datasheet which seems to mach pinout if it was a NPN/PNP IC: https://assets.nexperia.com/documents/data-sheet/BC846BS.pdf
Thanks in advance,