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US 2006/0152201 A1Published application
Electrical circuit for voltage transformation and use of said electrical circuit
AssigneePatent-Treuhand-Gesellschaft for Elektrische Gluhlampen Mbh
InventorsDietmar Czekay, Martin Honsberg-Riedl
Life of this patent
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Abstract
An electrical circuit for voltage transformation, the electrical circuit being suitable for power factor correction, enables a good power factor correction to be achieved with a high efficiency of between 80% and 95% in the MHz frequency region. To this end, few components suitable for high frequencies (capacitors, inductances, diodes and high frequency switches) are used. The diodes are, for example, Schottky diodes with SiC as the diode material. The high frequency switch includes a powerful MOS transistor.
Claims18
An electrical circuit (I, II) for voltage transformation, having
- at least one input terminal (1) for feeding in an electrical input power by applying a positive electrical DC voltage that changes temporally with respect to an electrical reference potential,
- at least one reference potential terminal (2) for applying the reference potential,
- at least one output terminal (3) for drawing an electrical output power,
- at least one input diode (4) having an anode (41) and a cathode (42),
- at least one output diode (5) having an anode (51) and a cathode (52),
- at least one input capacitance (6) having an electrode (61) and a counterelectrode (62),
- at least one transfer capacitance (7) having an electrode (71) and a counterelectrode (72),
- at least one input inductance (8) having an inductance terminal (81) and a further inductance terminal (82), and
- at least one base point inductance (9) having an inductance terminal (91) and a further inductance terminal (92),
- in which case
- the anode (41) of the input diode (4) and the input terminal (1) have a common node (100),
- the cathode (42) of the input diode (4), the inductance terminal (81) of the input inductance (8) and the electrode (61) of the input capacitance (6) have a common node (101),
- the counterelectrode (62) of the input capacitance (6), the reference potential terminal (2) and the
- inductance terminal (91) of the base point inductance (9) have a common node (102),
- the further inductance terminal (82) of the input inductance (8) and the electrode (71) of the transfer capacitance (7) have a common node (103),
- the counterelectrode (72) of the transfer capacitance (7) and the further inductance terminal (92) of the base point inductance (9) have a common node (104), a radiofrequency switch (10) for producing and/or interrupting an electrically conductive connection between the reference potential terminal (2) and the common node (103) of the further inductance terminal (82) of the input inductance (8) and the electrode (71) of the transfer capacitance (7) and
- a means (11) for forwarding the electrical output power to the output terminal (3) are present, the means (11) having the base point inductance (9) and the output diode (5) and the cathode (52) of the output diode (5) having a common node (105) with the output terminal (3).
14 more elements
An electrical circuit (III, IV) for voltage transformation, having
- at least one input terminal (1) for feeding in an electrical input power by applying a negative electrical DC voltage that changes temporally with respect to an electrical reference potential,
- at least one reference potential terminal (2) for applying the reference potential,
- at least one output terminal (3) for drawing an electrical output power,
- at least one input diode (4) having an anode (41) and a cathode (42),
- at least one output diode (5) having an anode (51) and a cathode (52),
- at least one input capacitance (6) having an electrode (61) and a counterelectrode (62),
- at least one transfer capacitance (7) having an electrode (71) and a counterelectrode (72),
- at least one input inductance (8) having an inductance terminal (81) and a further inductance terminal (82), and
- at least one base point inductance (9) having an inductance terminal (91) and a further inductance terminal (92),
- in which case
- the cathode (42) of the input diode (4) and the input terminal (1) have a common node (108),
- the anode (41) of the input diode (4), the inductance terminal (81) of the input inductance (8) and the electrode (61) of the input capacitance (6) have a common node (109),
- the counterelectrode (62) of the input capacitance (6), the reference potential terminal (2) and the
- inductance terminal (91) of the base point inductance (9) have a common node (102),
- the further inductance terminal (82) of the input inductance (8) and the electrode (71) of the transfer capacitance (7) have a common node (103),
- the counterelectrode (72) of the transfer capacitance (7) and the further inductance terminal (92) of the base point inductance (9) have a common node (104),
- a radiofrequency switch (10) for producing and/or interrupting an electrically conductive connection between the reference potential terminal (2) and the common node (103) of the further inductance terminal (82) of the input inductance (8) and the electrode (71) of the transfer capacitance (7) and
- a means (11) for forwarding the electrical output power to the output terminal (3) are present, the means (11) having the base point inductance (9) and the output diode (5) and the anode (51) of the output diode (5) having a common node (110) with the output terminal (3).
15 more elements
The circuit as claimed in 4, the output capacitance (17) having at least one radiofrequency capacitor having a capacitance selected from the range of 300 pF to 3000 pF inclusive.
Dependencies are inferred from the claim text.