Switching regulator that boosts and bucks
Its dimensions are 63.2mm x 60.6mm x 13.0mm, with a volume of 50cm³. This compact size is made possible by the exceptionally high efficiency of the converter, reaching 96% along a very flat characteristic over load.
Fig. 1: Efficiency over output current
This results in an excellent efficiency rating even at low loads. However, at a high power density, the converter needs to be cooled. This is done by dissipating heat through the soldered or screwed baseplate attached to the bottom of the half-brick case. The converter can thus be operated at full power at ambient temperatures and up to 85°C. Above this range, derating becomes an issue. At 25°C and 80% load, the MTBF calculated according to Telcordia SR332 is 1,3 x 106 hours.
Fig. 1: Efficiency over output current
This results in an excellent efficiency rating even at low loads. However, at a high power density, the converter needs to be cooled. This is done by dissipating heat through the soldered or screwed baseplate attached to the bottom of the half-brick case. The converter can thus be operated at full power at ambient temperatures and up to 85°C. Above this range, derating becomes an issue. At 25°C and 80% load, the MTBF calculated according to Telcordia SR332 is 1,3 x 106 hours.