The Sunpower SPV Power Supply is suitable for demanding applications requiring highly controllable dc power in the range: 150W up to 4500W. The SPV outputs can be remotely trimmed over a very wide range – from 20% to 110% (120% for SPV-1500) of their nominal value of 12, 24 or 48Vdc. The input specification is similarly flexible, with a wide range of ac and dc sources accepted.
Automation of the SPVs is further enhanced by remote sense inputs and remote on/off switching control. The SPVs each feature auxiliary 12Vdc 0.1A outputs; these can power the remote control circuit if required. Alarm signal outputs are also provided. The range comprises the SPV-150, SPV-300 and SPV-1500. Two or three SPV-1500 units can be paralleled in a current sharing master/slave configuration for applications demanding up to 4500W power.
The SPV power supplies are compact, and designed for efficiency to minimise power demand and heating issues. The SPV-1500 has a power density of 8.3W/inch³, an efficiency of up to 90% and, with active PFC, a typical power factor of up to 0.98 at full load. The SPV-300 and SPV-150 likewise feature active PFC, offering a similar power factor with efficiency up to 83%. The SPV-150 needs only free air convection for cooling up to 40°C and the SPV-300 can operate with its long life built-in fan under on/off control up to 50°C ambient.