Non-isolated AC-to-DC converter having a low charging current initial power up mode

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United States of America Patent

PATENT NO 9054587
APP PUB NO 20140126258A1
SERIAL NO

14152989

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Abstract

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In a steady state operation mode, a charging circuit of a non-isolated AC-to-DC converter decouples an output voltage VO node from a VR node when the rectifier output signal VR on the VR node is greater than a first predetermined voltage VP and, 2) supplies a charging current from the VR node and onto the VO node when VR is less than VP provided that an output voltage VO on the VO node is less than a second predetermined voltage VO(MAX) and provided that VR is greater than VO. In an initial power up operation mode, the maximum limit value of the charging current is smaller than it is during steady state operation. Due to the reduced charging currents employed during initial power up operation, less noise is injected back to the AC source and EMI filters are not required between the rectifier of the converter and the AC source.

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Patent Owner(s)

  • IXYS CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Neyman, Leonid A Sunnyvale, US 12 56

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