I am using a DC/DC converter to charge a battery. The output current of the converter is about 6 Ampere at 41 Volts.
I'm trying to eliminate the standby leakage current of the output capacitors in order not to drain the battery (even mere milliamps are too much for this specific use case) while the DC/DC converter is not active.
Furthermore, any capacitor inrush current greater than 30 Ampere is too much for the battery. Thus, it is preferable for the capacitors to be charged through the DC/DC converter.
I have thought of the following approaches:
Using a diode to let current flow only into the battery and not back from the battery to the capacitors. (This would solve both leakage current and inrush current considerations) Thing is, that the diode dissipates a lot of power in this configuration.
Using an N-Channel MOSFET as a low side switch between the output capacitors and ground. This would eliminate the standby leakage current, but not the inrush current problem. I have thought of ramping V_GS of the MOSFET in order to "slowly" decrease the RDS during startup to charge the capacitor more slowly.
Is this a feasible approach? Are there better solutions to this problem?