Methods and systems for determining maximum power points in photovoltaic inverters. The present application describes unique PV converter topologies including algorithms embedded in controllers. The algorithms can be a variable step size binary search to adjust the input conductance in order to find the conductance that will produce the maximum power out of a PV array. Due to these special topologies, the PV inverter will often not experience sudden shutoffs when typical low voltage cut-off limit is reached since a low-current cut-off limit is also set.