Any help is very much appreciated, i am pretty desperate since i cannot find what i am doing wrong!
Problem:
How do i control a n-channel IRL540A mosfet with a TLC5940 sink PWM chip, i want to control it with settings like half open, or open or closed!
What did i try?
Mosfet in series woth TLC chip out port and gate with resistor to VCC.
Problem: mosfet is fully open when chip does not give PWM valueQ
http://www.ti.com/lit/an/slva280/slva280.pdf
Mosfet controlled by transistor BC327 that can make a source from the sink by getting the VCC in.
Problem: minimal PWM value just put mosfet fully open
Used setup:
Used diagram (same as mine, used as an example):
Problem:
How do i control a n-channel IRL540A mosfet with a TLC5940 sink PWM chip, i want to control it with settings like half open, or open or closed!
What did i try?
Mosfet in series woth TLC chip out port and gate with resistor to VCC.
Problem: mosfet is fully open when chip does not give PWM valueQ
http://www.ti.com/lit/an/slva280/slva280.pdf
Mosfet controlled by transistor BC327 that can make a source from the sink by getting the VCC in.
Problem: minimal PWM value just put mosfet fully open
Used setup:
Used diagram (same as mine, used as an example):