I've attached a circuit that I'd like to use in my car to drive high current loads from a PWM output of my arduino (D2/PWM).
I have a 5v supply for the arduino and a 24v supply to drive the mosfet as a high side driver...and yes I want a high side mosfet. The 12v supply is the car battery.
D2/PWM drives the circuit from an arduino output
D24 is an input on the arduino to determine if the fuse has blown
A1 is an analog input on the arduino used to measure the current flow through the shunt
D2 runs a pwm which runs a PWM at 24v to the mosfet. The mosfet supplies 12Vdc to the load through a 0.001 ohm shunt resister. The 1NA169 circuit is used to amplify the shunt signal to the arduino analog input. D24 should always be high unless the fuse has blown.
Now that I look at the circuit, is the mosfet high when D2 is low?
How does this circuit look...any feedback would be great. I'm know engineer!
I need to make sure there is very little current draw when the circuit is off to prevent draining my car battery. Also this circuit is intended to allow a max 100amp draw
I have a 5v supply for the arduino and a 24v supply to drive the mosfet as a high side driver...and yes I want a high side mosfet. The 12v supply is the car battery.
D2/PWM drives the circuit from an arduino output
D24 is an input on the arduino to determine if the fuse has blown
A1 is an analog input on the arduino used to measure the current flow through the shunt
D2 runs a pwm which runs a PWM at 24v to the mosfet. The mosfet supplies 12Vdc to the load through a 0.001 ohm shunt resister. The 1NA169 circuit is used to amplify the shunt signal to the arduino analog input. D24 should always be high unless the fuse has blown.
Now that I look at the circuit, is the mosfet high when D2 is low?
How does this circuit look...any feedback would be great. I'm know engineer!
I need to make sure there is very little current draw when the circuit is off to prevent draining my car battery. Also this circuit is intended to allow a max 100amp draw
Attachments
-
177 KB Views: 31