Voltage converter
AssigneeSTMicroelectronics S.r.l.
InventorLaurent Gonthier
Life of this patent
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Abstract
The present description concerns a circuit for converting from a first alternating voltage to a second voltage. The circuit includes: a first thyristor; a first control circuit of the first thyristor; a power factor correction circuit comprising a coil; and a first circuit configured to convert a third voltage into a fourth DC voltage. The third voltage corresponds to a difference between a potential at a first node connected to an output node of the coil and a reference potential. The fourth DC voltage is configured to supply the first control circuit of the first thyristor, and is referenced with respect to the same reference potential as the third voltage.
Claims15
A converter circuit for converting a first ac voltage into a second voltage, comprising:
- a first thyristor;
- a first control circuit configured to control the first thyristor;
- a power factor corrector circuit comprising a coil;
- and
- a first circuit configured to convert a third voltage into a fourth dc voltage;
- wherein the third voltage corresponds to a difference between a potential at a first node coupled to an output node of the coil and a reference potential;
- and
- wherein the fourth dc voltage is configured to supply the first control circuit, and is referenced to said reference potential.
Dependencies are inferred from the claim text.