Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Patent
1999-06-28
2000-09-19
Riley, Shawn
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
323283, G05F 144
Patent
active
06121762&
ABSTRACT:
A non-isolated voltage converter, of switch-mode type, includes a capacitor between terminals that provide an output voltage regulated by a circuit that controls a switch that provides current to an inductive element. A local supply for the control circuit receives energy from the inductive element. In one embodiment, the inductive element has a tab between two windings, and the output voltage of the converter is smaller than the local supply voltage of the control circuit. In another embodiment, a diode is interposed between a positive terminal of the output capacitor and a positive terminal of a capacitor of the local supply of the control circuit. The negative terminal of the local supply capacitor is connected to the mid-point of a series association of the switch with the inductive element. A zener diode is interposed, in series with the local supply capacitor and the local supply diode, between the mid-point and the positive output terminal.
REFERENCES:
patent: 4998044 (1991-03-01), Nilssen
patent: 5798619 (1998-08-01), Covington
patent: 5818214 (1998-10-01), Pelly et al.
patent: 5905370 (1999-05-01), Bryson
Galanthay Theodore E.
Morris James H.
Riley Shawn
STMicroelectronics S.A.
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