Released last May, the converters come in a remarkably slim (9 x 36mm cross section) package (dubbed ‘VIA’) that can be bolted along the inside of a 1U chassis rail – sitting in space that it often unused.
However, the firm left users to source their own input filter, mains rectifier, transient protection and energy reservoir capacitor – an activity that could end-up encroaching beyond spare volume.
Now it has announced ‘AIM’, a universal ac input module which mops up three of the above: primary-side rectification, filtering and transient protection. AIM, hinted at when PFM was announced, is 46mm long with matching 36 x 9mm cross section.
“In many applications, a user can implement a complete AC-DC front end by combining a PFM with an AIM, both in VIA packages, and suitable secondary-side storage capacitance,” said Vicor. “Alternatively, a designer can combine a PFM front-end module with rectification, filtering and secondary-side output capacitance that is optimised for a specific application.”
Capacitor sourcing is still up to the user. Unusually, the PFM-based scheme stores energy in low voltage capacitors at the isolated SELV output – removing the requirement for a 370Vdc link to remote storage.
PFMs are capable of delivering 400W, are up to 93% efficient, and come in 24 or 48Vdc isolated output versions. Power factor correction is included, input range is 85-264Vac, and power density is 8W/cm3 (127W/in3) – ignoring capacitor and AIM
On-board or chassis mounting version are available, in a choice of two operating temperature ranges.
Applications are expected in industry, process control, telecoms, office equipment, test, measurement and LED lighting.
Online design tools are available.