Power converter

Details Power converter Power converter

1994-12-07

1997-03-04

Krishnan, Aditya

Electric power conversion systems

Current conversion

Using semiconductor-type converter

H01L 2910

Patent

active

056086164

ABSTRACT:
A power converter for an AC generator for motor vehicles for converting a generated voltage of the AC generator driven by an engine into a DC voltage to feed to a battery includes at least either high-side MOS power transistors for connecting an output end of an armature coil which generates the generated voltage of the AC generator with a high potential end of a battery or low-side MOS power transistors for connecting the output end of the armature coil with a low potential end of the battery. The MOS power transistors each has a source region, a well region and a drain region. A high resistance connected with either a parasitic diode on the side connected with the source generated between the source region and well region or a parasitic diode on the side connected with the drain generated between the drain region and well region in parallel is formed in the MOS power transistors. Thereby, it allows blocking a reverse current produced by the parasitic diode and giving a necessary potential to the well region. Further, SiC is used in the MOS power transistors rather than Si.

REFERENCES:
patent: 4985743 (1991-01-01), Tokura et al.
patent: 5233215 (1993-08-01), Baliga

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