i used ir2110 to drive boost converter (low side switching) but when i connect the source input it make short circuit and the dc source turned off. i don' know the reason i simulate it on Proteus and it works fine.
note; i didn't find ir2110 in proteus so i used ir2112( they are the same )
short circuit happened on the input terminal of the dc converter, when i removed the input terminal and measured voltage using voltmeter i found 6.5 v on input?!!
It seems like the inductor is saturating. If the inductor is saturating, it would draw a lot of current from the supply. If the supply has a current limit setting and protection, then it would turn off. I doubt Proteus does simulate core saturation. Some simulators like LTspice does.
Try it with low PWM duty cycle to see if it would still shut down.
I think Akanimo is correct.
It's not a true short circuit, but just high current.
See the current flow path when the Mosfet is ON. --> Load is not involved
And after some 10us ... or some 100us the current will become high, too high. The inductor will saturate, thus the current will rise even faster.
yes that's right, it's the normal operation of boost converter to draw current even without load being connected. the current was high because it wasn't controlled.
thanks