I am working on an automotive project and need to convert a voltage range of 22V to 28V down to a voltage range of 500mV to 5V to interface with the vehicle's controller.
I've come up with a transistor design but only supplies a variation of around 1V over that range from 3V to 4V, which I believe to be too low a resolution.
I am also trying to ensure that if a fault occurs, the input of the vehicle's controller will never see anything more than 5V as the maximum input voltage is 5V.
Any suggestions or guidance in the right direction?
I've come up with a transistor design but only supplies a variation of around 1V over that range from 3V to 4V, which I believe to be too low a resolution.
I am also trying to ensure that if a fault occurs, the input of the vehicle's controller will never see anything more than 5V as the maximum input voltage is 5V.
Any suggestions or guidance in the right direction?