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Proper MOSFET driver for 30N06L
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help_me_pick_username:
I have a project where I am controlling a 10 watt LED with an ESP8266. The LED runs at 12 volts and the ESP8266 at 3.3 volts. I have a 30N06L MOSFET that is controlling the LED via pwm. Since the MOSFET is being driven by 3.3 volts, it's not being driven to 100% output. I have burnt two ESP8266's so far when I tried to use a BJT to control the MOSFET instead.

At this point I don't want to burn another ESP8266 so I'm looking for a suitable mosfet driver IC that I can use to drive the MOSFET properly.
aheid:
Could it be you wired the BJT wrong and got 12V onto the GPIO pin? Find it hard to believe you bricked the whole thing by simply forgetting a base resistor for the BJT.

Could you perhaps post schematic of what you've tried so far? Also, which BJT?
help_me_pick_username:
I think I did wire the BJT (2N3906) wrong when I burnt the first one. Since I'm powering this project with an 18v power supply, yeah. 18v to the 3.3v tolerant GPIO pin. Umm, so I didn't actually use a base resistor for the BJT in either scenario, I didn't think that it was that important (reading your reply, I guess I was very wrong).

The first time, the was an audible sound, and I could smell the burnt chip (after I took off the shielding, I could clearly see where the chip ruptured). The second time though, it was completely silent, there was no smell. (The second time though, I'm pretty sure I used 12v from the buck converter to supply the BJT instead).

I was honestly being really careful the second time when I wired up the circuit, was it the lack of a base resistor that got me?
Circlotron:
What is the pwm frequency? Probably doesn’t need to be much more than 100Hz. Low frequency means low switching losses.
help_me_pick_username:
Some quick googling shows that the default switching frequency for the ESP8266 is 1kHz.
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