Hi all,
I am using 12V from a car battery to power electronics. The current consumption of my circuit is 1A max, however it will run closer to around 850mA.
I need to add reverse polarity protection to my circuit.
I have opted for a simple Schottky diode solution, as I am limited for PCB space and it has a forward voltage of around 0.5V.
A car battery can spike to negative and positive voltages due to load dump and inductive loads. The only requirement is that my surge current selection of 30A is high enough.
I am looking to select a diode with a VRRM of 60-100V, forward surge current of 30A. Average current of 2A.
Is there anything else that I need to consider or have overlooked? Do I need to consider any power dissipation? The circuitry can operate at 7V so the 0.5V drop should not be an issue.
Any help would be appreciated.
I am using 12V from a car battery to power electronics. The current consumption of my circuit is 1A max, however it will run closer to around 850mA.
I need to add reverse polarity protection to my circuit.
I have opted for a simple Schottky diode solution, as I am limited for PCB space and it has a forward voltage of around 0.5V.
A car battery can spike to negative and positive voltages due to load dump and inductive loads. The only requirement is that my surge current selection of 30A is high enough.
I am looking to select a diode with a VRRM of 60-100V, forward surge current of 30A. Average current of 2A.
Is there anything else that I need to consider or have overlooked? Do I need to consider any power dissipation? The circuitry can operate at 7V so the 0.5V drop should not be an issue.
Any help would be appreciated.