I bought a new batch which the dealer confirmed it is an original chip and gave me a guaranty to return them if they didn't work and they worked perfectly


Huge difference in rising and falling time, signal stability and the switching frequency is very stable on 1.25Mhz not like the fake chip which the frequency is way higher than the expected value. Also the price is only 3x the fake (1.1$ vs 0.4$) I still find it cheap