Title :
New very low power, high efficiency, DC/DC power supply for LEO satellite constellation
Author :
Sanchis-Kilders, E. ; Capel, A. ; Carrasco, J.A. ; Maset, E. ; Espí, J.M.
Author_Institution :
Valencia Univ., Spain
Abstract :
In this paper we present a 3 W DC/DC power supply for use in small LEO satellites. Efficiency achieved is well above 70% in the higher power range. For this low power level, (Pθmax=3 W) the control consumption and driving circuit losses are critical and therefore two different resonant driving methods are presented. Both are based on a resonant drive technique used to drive the resonant forward with maximum efficiency. The new proposed power supply is short circuit protected, galvanic isolated, with three completely regulated outputs, has a high noise rejection and is fed from a regulated 50 V bus. Low weight and small size can be achieved using surface mounted devices and low profile cores or planar magnetic elements
Keywords :
DC-DC power convertors; driver circuits; losses; space vehicle power plants; surface mount technology; 3 W; 50 V; DC/DC power supply; LEO satellite constellation; control consumption; driving circuit losses; galvanic isolation; high efficiency; high noise rejection; low profile cores; planar magnetic elements; regulated outputs; resonant driving methods; short circuit protected; surface mounted devices; very low power; Circuit noise; Galvanizing; Low earth orbit satellites; Magnetic cores; Magnetic devices; Magnetic noise; Power supplies; Protection; RLC circuits; Resonance;
Conference_Titel :
Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
0-7803-5421-4
DOI :
10.1109/PESC.1999.785656
