Minimum load

In a switching power supply circuit, when the load is small, the output may become unstable and fall outside the specified range. In particular, for multi-output power supply equipment using an auxiliary control method, the auxiliary output voltage may fall outside the specified range under light load conditions. In addition, in DC-DC converters, under no-load or light-load conditions, differences in the transfer function of the coil may cause discontinuous current mode, resulting in no current flow. Therefore, it is necessary to specify a minimum load in order to guarantee the specified output.