STEVAL-ISA058V1: 5W, 5V @ 1A, 90 ~ 265V in

In consumer applications like LCD TVs, DVD players, set-top boxes and others, it is desirable to be able to switch on or switch off the application directly from the remote control. It is therefore necessary to supply the remote control receiver even when the equipment is not in use (standby mode). In standby mode only a minimum load (in the range of a few tens of a mW) is present at the power supply output. Often there are a few mA of load present at the 5 V or 3.3 V power supply output. Even if no load is applied to the power converter, some power is still sunk by the mains to keep the converter alive. The load for the mains is constant (24 hours per day) giving a good contribution to the total consumption of the equipment.

Consumer equipment manufacturers often give different criteria for measuring the standby performance of a power supply, depending on both the characteristics of the equipment and their own considerations. In order to evaluate the standby power supply performance, a good starting point is the measurement of power consumption when the unit is not loaded.

The STEVAL-ISA058V1 demonstration board is presented with a power consumption of 30 mW in no load condition.