Digitally controlled power supplies

摘要

Lambda has introduced a range of 1U high digitally controlled modules to its NV-Power family of configurable ac/dc power supplies. Capable of providing a peak 1.450W rating for ten seconds, these new units offer some interesting design features, including an integrated magnetics transformer for improved efficiency and digital control functions that allow precise customisation to application requirements. NV-Power employs an 8-bit microcontroller to handle housekeeping routines, replacing the array of comparators, op amps and other discrete components used in less integrated designs. This brings a 50% parts count reduction which, in turn, allows 40% more board space for power components. With this new high peak power rating, designers can realise power densities of up to 19W/in~3 from a 1U unit measuring only 125mm by 250mm.