Nathan W Hunter

US Patent:

20040012986, Jan 22, 2004

Filed:

Jul 22, 2002

Appl. No.:

10/209728

Inventors:

Christopher Riggio - Castle Rock CO, US
Jeffrey Buske - Broomfield CO, US
David Thompson - Littleton CO, US
Lyle Stahle - Littleton CO, US
Nathan Hunter - Denver CO, US
Garth Woodland - Littleton CO, US

International Classification:

H02M003/335

US Classification:

363/026000

Abstract:

The use of low permeability magnetic material (NSME) with the disclosed design strategies form a two-stage isolated output converter system with the distinct advantages of superior density, efficiency, thermal operating bandwidth, service life, transient survival, and form factor flexibility over the prior art. These improvements are realized by, optimized application of NSME, efficient rectifying flyback management techniques, inclusion of switching buffers that substantially reduce switching losses. The instant invention provides power factor correction, output regulation, inrush limiting, over voltage, over current, over temperature, and transient protection, multi-converter load sharing, hot swapability, and fault signals. The disclosed system is designed, specified, and certified to function from -40 deg. C. to +65 deg. C. from a 180 vac to 264 vac 50/60 Hz input line and supports 1000 watts of output or 600 watts from 90 vac to 120 vac 50/60 Hz line input at greater then 0.95 power factor and features a packaged power density of 14 watts per cu. in. at high line.