Hi,
I am trying to make a solenoid driver circuit and am running into problems.
I have inputs coming out of a device as such.
I have a ground wire a 24 volt source and a 24V PWM signal from a low side switch. I am trying to drive a Mosfet driver IXYS IXDI404PI which can take input voltage of 0-18 volt.
Problem is that i have a 24V PWM square signal coming from the low side switch which i would like to feed to the MOSFET driver which in turn would drive the FET, IRF530 gate and the drain source voltage will be 24 volts.
Here is what i have tried: I have put a voltage divider 1.4K:1K at the 24 volt PWM signal but as soon as a connect to the mosfet driver it pulls the signal down and i do not get any driver signals for the driver. Do I have to use a capacitive divider???? This is not an AC signal!!
SECOND ISSUE
i gave up on the battle of driving with a 24V signal and used a freq generator to drive the MOSFET driver(IXDN404PI) when i an driving it I see that the output of the driver the positive edge of the square wave (PWM) is rounded. It almost looks like a capacitive transient.
The output of the FET where the solenoid is connected has a great 80 volt spike with 24V input whenever it is transitioned from zero to 24V.
I would really appreciate any help on this issues.
Thanks...
attached is a schematic
I am trying to make a solenoid driver circuit and am running into problems.
I have inputs coming out of a device as such.
I have a ground wire a 24 volt source and a 24V PWM signal from a low side switch. I am trying to drive a Mosfet driver IXYS IXDI404PI which can take input voltage of 0-18 volt.
Problem is that i have a 24V PWM square signal coming from the low side switch which i would like to feed to the MOSFET driver which in turn would drive the FET, IRF530 gate and the drain source voltage will be 24 volts.
Here is what i have tried: I have put a voltage divider 1.4K:1K at the 24 volt PWM signal but as soon as a connect to the mosfet driver it pulls the signal down and i do not get any driver signals for the driver. Do I have to use a capacitive divider???? This is not an AC signal!!
SECOND ISSUE
i gave up on the battle of driving with a 24V signal and used a freq generator to drive the MOSFET driver(IXDN404PI) when i an driving it I see that the output of the driver the positive edge of the square wave (PWM) is rounded. It almost looks like a capacitive transient.
The output of the FET where the solenoid is connected has a great 80 volt spike with 24V input whenever it is transitioned from zero to 24V.
I would really appreciate any help on this issues.
Thanks...
attached is a schematic
Attachments
-
30.5 KB Views: 144