minimum load

In switching power supply circuits, when the load is small, the output may become unstable and fall outside the specified range. In particular, auxiliary-controlled multi-output power devices may have auxiliary output voltages that fall outside the specified range under low-load conditions. Also, in DC-DC converters, under no-load or light-load conditions, due to differences in the transfer function of the coil, the current enters a discontinuous mode and stops flowing. Therefore, to guarantee the specified output, a minimum load needs to be specified.