I am working with a series of three PWM boards which are connected on external power supply.
I noticed I don't use more than 5A (peak is 3A when all boards channels are in use).
I wanted to design a way so that these boards are not powered before teensy is powered. These boards have a Vcc pin, connected to Teensy, which switches on the board's ICs, led, ... However power on terminals are always outputting 5V regardless of this.
I have made a simple design, and tested it. It seems to work, but as in my previous topic, mosfet is getting too hot after just few seconds. This time I am using a PNP and NPN combination as seen in the picture.
NPN mosfet (Q2) is actually a K4033.
If any other idea, I would also appreciate.
I noticed I don't use more than 5A (peak is 3A when all boards channels are in use).
I wanted to design a way so that these boards are not powered before teensy is powered. These boards have a Vcc pin, connected to Teensy, which switches on the board's ICs, led, ... However power on terminals are always outputting 5V regardless of this.
I have made a simple design, and tested it. It seems to work, but as in my previous topic, mosfet is getting too hot after just few seconds. This time I am using a PNP and NPN combination as seen in the picture.
NPN mosfet (Q2) is actually a K4033.
If any other idea, I would also appreciate.