heathyoung
100 kW
circuit said:So I've fixed my "LYEN edition" controller. What I did is below.
Nope, there are not three, but four additional chips. Original mosfet drivers were driven via 120Ω resistor, which is madness. So I upgraded it a bit to 3A sink/source drivers. Also, original discrete low side drivers had an inverted signal, so I needed another hex inverter chip.
Yeah, they are a craptacular gate drive design. Absolute amateaur hour design, it would have cost bugger-all to implement proper gate drive but when you sell them (12 FET) on flebay for $33 bucks each, you gets what you pays for. Sigh.
Those 18/36 FET controllers are just mindless control-c, control-v based design (aka cut-n-paste). The Lyen edition stuff - well, its just rebadged Keywin/Ecrazyman/Shenzin Sucteam Technology (teehee sucteam) - no real improvements apart from some QC cleanup...