High-efficiency, high-density, power supply

Details High-efficiency, high-density, power supply High-efficiency, high-density, power supply

H - Electricity

02

M

H02M 3/137 (2006.01) H02J 1/10 (2006.01) H02M 3/28 (2006.01) H02M 3/337 (2006.01)

Patent

CA 2046770

HIGH-EFFICIENCY, HIGH-DENSITY, POWER SUPPLY Abstract A power supply includes a dc-to-dc converter with an integral boost power supply for maintaining the effective converter input voltage within a predetermined steady-state range, even if the input voltage to the power supply exhibits substantial voltage transients. In one preferred embodiment, the boost power supply comprises a boost transformer and a rectifier, and the converter comprises two parallel-coupled resonant converter modules, each including either a half- bridge or full-bridge connection of switching devices and a resonant circuit. The primary winding of the boost transformer is coupled between the junctions joining the switching devices of the resonant converter bridges. When the power supply input voltage is outside the steady-state voltage range, the boost power supply is activated by phase shift control of the voltage across the primary winding of the boost transformer.

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