123duermed
New Member
Hey
I have have now destroyed three Ir2117 without knowing why. In the data sheet the I0+ is 0.2A, which is the max current through HO. I have had a voltage of 20V on Vcc and a Rgate on 10ohm. This should give me a current of 2A when the bootstrap caps is discharging. Is this a good reason for why I break all my gate drivers?. The data sheet also says that the Vin should be max Vcc + 0.3. If I have not connected Vcc, and have a 10V pwm signal on Vin, could this also be a reason for breakdown?
Thanks for answers
I have have now destroyed three Ir2117 without knowing why. In the data sheet the I0+ is 0.2A, which is the max current through HO. I have had a voltage of 20V on Vcc and a Rgate on 10ohm. This should give me a current of 2A when the bootstrap caps is discharging. Is this a good reason for why I break all my gate drivers?. The data sheet also says that the Vin should be max Vcc + 0.3. If I have not connected Vcc, and have a 10V pwm signal on Vin, could this also be a reason for breakdown?
Thanks for answers
You can add a resistor in series with the input to prevent damage under such conditions.