fpga

My first thought is that anyone who doesn't know enough electronics to figure this out doesn't belong anywhere near and FPGA.

I hope the FPGAs aren't too expensive!

Well, it looks like the input to the TC4427 should be less than one microamp, and that Vih of 2.4V should be fine. Vin is allowed to go all the way up to Vdd (15V in your case), though even so it would usually be that 3.3V would be fine.

I would triple check that you wired up the TC4427 right. If you do it wrong, it might put 15V into the FPGA pin, which would quickly destroy it.

If speed isn't to important, a resistor should be fine on the output. With 12pF input capacitance, a resistor won't slow you down too much, and will protect the FPGA. A big enough resistor should protect you up to 15V.

-- glen

amplitude is 3.3, and to drive my switches, I need to increase the voltage up to 15 V. I am using TC4427(dual power mosfet driver)as a buffer after FPGA , and would like to check the possibility of my gate driver, but whenever I wanna check it, the FPGA pin is destroyed. I personally believe a resistance is required in series with the IC. Could you please give me a hand with this problem if you do not mind?

Reading the datasheet, I would not expect that a series resistor is required, although one should not prove to be a problem (33 or 47 ohm, probably).

Double check the connections.

Could the MOSFET switching cause a power supply glitch to the FPGA?

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