Regulating device for a resonant converter
First Claim
1. A resonant converter comprising an inverter (12) for generating an AC voltage, and a resonant arrangement (14) fed with the AC voltage and comprising at least one capacitor (CS) and at least one transformer (16), at least two types of secondary units (20a, 20b) being provided, each formed by at least one secondary winding (18a, 18b) of the transformer (16) and at least one rectifier element (Da, Db), first-type secondary units (20b) and second-type secondary units (20a) being distinguished by opposite orientations, and at least two output voltages being supplied of which a first output voltage (Vb) is supplied by a first-type secondary unit (20b) and a second output voltage (Vab10 being supplied by a first-type secondary unit (20b) and a second-type secondary unit (20a).
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Accused Products
Abstract
A resonant converter, a regulation method for a resonant converter and a switched-mode power supply with a resonant converter are proposed. A converter comprises an inverter for generating an AC voltage which is fed to a resonant arrangement with a capacitor and a transformer. The circuit provides two types of secondary units, each comprising a secondary winding of the transformer and at least one rectifier element. Secondary units of the first and second type are then distinguished by opposite orientation, for example, opposite direction of winding or oppositely oriented wiring. At least two output voltages are delivered on the output, a first output voltage of which being supplied as a direct output of a first-type secondary unit and a second output voltage as a “stack output” of a first-type secondary unit and a second-type secondary unit, preferably as a series combination of these secondary units. The stack output is then arranged to deliver a large power and the direct output to deliver smaller powers. The two output voltages can be regulated separately with a regulating device, the regulating device predefining the driving of the inverter, preferably for the generation of a pulse width modulated voltage. For example by suitably choosing frequency and duty cycle of the pulse width modulated voltage, the voltages can be regulated to set values independently of each other.
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Citations
11 Claims
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1. A resonant converter comprising
an inverter (12) for generating an AC voltage, and a resonant arrangement (14) fed with the AC voltage and comprising at least one capacitor (CS) and at least one transformer (16), at least two types of secondary units (20a, 20b) being provided, each formed by at least one secondary winding (18a, 18b) of the transformer (16) and at least one rectifier element (Da, Db), first-type secondary units (20b) and second-type secondary units (20a) being distinguished by opposite orientations, and at least two output voltages being supplied of which a first output voltage (Vb) is supplied by a first-type secondary unit (20b) and a second output voltage (Vab10 being supplied by a first-type secondary unit (20b) and a second-type secondary unit (20a).
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10. A regulation method for a resonant converter, in which
the converter (10, 30) comprises an inverter (12) for generating an AC voltage and a resonant arrangement (14) fed with the AC voltage and comprising at least one capacitor (CS) and at least one transformer (16) at least two types of secondary units (20a, 20b) being provided, each formed by at least one secondary winding (18a, 18b) of the transformer (16) and at least one rectifier element (Da, Db), first-type secondary units (20b) and second-type secondary units (20a) being distinguished by opposite orientations, and at least two output voltages being supplied of which a first output voltage (Vb1) is supplied by a first-type secondary unit (20b) and a second output voltage (Vab10 being supplied by a first-type secondary unit (20b) and a second-type secondary unit (20a), in which the driving of the inverter (12) is predefined to regulate the first and second output voltage to a respective set value.
Specification