Line switcher for power converters
First Claim
1. A power supply apparatus comprising:
- a converter circuit comprising a first switching circuit and a second switching circuit both coupled with an output circuit;
an input rectifier circuit configured for receiving an AC input voltage and for generating a rectified voltage, the input rectifier circuit coupled with a first and a second input of the first and the second switching circuit, respectively, the input rectifier circuit including one or more controlled switches, the input rectifier circuit including a first configuration of a bridge rectifier and a second configuration of the bridge rectifier; and
a controller circuit coupled with a configuration switch and coupled with the input rectifier circuit for providing a control signal for enabling either the first configuration or the second configuration according to a parameter of the AC input voltage, the first configuration couples the first and second input of the first and the second switching circuit, respectively, in series, whereas the second configuration couples the first and second input of the first and the second switching circuit, respectively, in parallel, wherein the configuration switch is controlled by the controller circuit for coupling the first and second switching circuits together, wherein the first configuration includes a first set of switches comprising a first pair and a second pair of semiconductor switches and the second configuration includes a second set of switches comprising the first set of switches and the one or more controlled switches, wherein the one or more controlled switches comprise a first pair of gate-driven semiconductor switches and a second pair of gate-driven semiconductor switches.
1 Assignment
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Accused Products
Abstract
A regulated power supply apparatus and method are provided. The apparatus includes a converter circuit for generating a regulated voltage signal. The converter circuit includes a first switching circuit and a second switching circuit both coupled with an output circuit. A first and a second transformer include a first and a second secondary, which are coupled with each other in series or alternatively, coupled with each other in parallel. An input rectifier circuit is coupled with the first and the second switching circuit. The input rectifier circuit is configured for receiving an AC input voltage and for generating a rectified voltage. The input rectifier circuit includes controlled switches and a first and second configuration of a bridge rectifier that couples the first and second switching circuits in series or parallel depending if the AC input power signal is “high-line” or “low-line.” A controller circuit is provided for enabling either the first configuration or the second configuration. A configuration switch is controlled by the controller circuit for coupling the first and second switching circuits together.
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Citations
30 Claims
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1. A power supply apparatus comprising:
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a converter circuit comprising a first switching circuit and a second switching circuit both coupled with an output circuit; an input rectifier circuit configured for receiving an AC input voltage and for generating a rectified voltage, the input rectifier circuit coupled with a first and a second input of the first and the second switching circuit, respectively, the input rectifier circuit including one or more controlled switches, the input rectifier circuit including a first configuration of a bridge rectifier and a second configuration of the bridge rectifier; and a controller circuit coupled with a configuration switch and coupled with the input rectifier circuit for providing a control signal for enabling either the first configuration or the second configuration according to a parameter of the AC input voltage, the first configuration couples the first and second input of the first and the second switching circuit, respectively, in series, whereas the second configuration couples the first and second input of the first and the second switching circuit, respectively, in parallel, wherein the configuration switch is controlled by the controller circuit for coupling the first and second switching circuits together, wherein the first configuration includes a first set of switches comprising a first pair and a second pair of semiconductor switches and the second configuration includes a second set of switches comprising the first set of switches and the one or more controlled switches, wherein the one or more controlled switches comprise a first pair of gate-driven semiconductor switches and a second pair of gate-driven semiconductor switches. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of regulating a power supply apparatus comprising:
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receiving an AC input voltage at an input rectifier circuit, the input rectifier circuit including one or more controlled switches, the input rectifier circuit including a first configuration of a bridge rectifier and a second configuration of the bridge rectifier; sensing a parameter of the AC input voltage with a controller circuit, the controller circuit coupled with a configuration switch and coupled with the input rectifier circuit for providing a control signal for enabling either the first configuration or the second configuration according to the parameter of the AC input voltage, the first configuration couples a first and second input of a first and a second switching circuit, respectively, in series, whereas the second configuration couples the first and second input of the first and the second switching circuit, respectively, in parallel, wherein the configuration switch is controlled by the controller circuit for coupling the first and second switching circuits together; generating a rectified voltage according to the parameter of the AC input voltage either with the first configuration or the second configuration; and generating an output voltage signal with a converter circuit that is coupled with the input rectifier circuit, the converter circuit comprising the first switching circuit and the second switching circuit both coupled with an output circuit, wherein the first configuration includes a first set of switches comprising a first pair and a second pair of semiconductor switches and the second configuration includes a second set of switches comprising the first set of switches and the one or more controlled switches, wherein the one or more controlled switches comprise a first pair of gate-driven semiconductor switches and a second pair of gate-driven semiconductor switches. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A power supply apparatus comprising:
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a converter circuit comprising a first switching circuit and a second switching circuit both coupled with an output circuit; an input rectifier circuit configured for receiving an AC input voltage and for generating a rectified voltage, the input rectifier circuit coupled with a first and a second input of the first and the second switching circuit, respectively, the input rectifier circuit including one or more controlled switches, the input rectifier circuit including a first configuration of a bridge rectifier and a second configuration of the bridge rectifier; and a controller circuit coupled with a configuration switch and coupled with the input rectifier circuit for providing a control signal for enabling either the first configuration or the second configuration according to a parameter of the AC input voltage, the first configuration couples a first and second input of the first and the second switching circuit, respectively, in series, whereas the second configuration couples the first and second input of the first and the second switching circuit, respectively, in parallel, wherein the configuration switch is controlled by the controller circuit for coupling the first and second switching circuits together, the control signal used in enabling or disabling the configuration switch, wherein the first configuration includes a first set of switches comprising a first pair and a second pair of semiconductor switches and the second configuration includes a second set of switches comprising the first set of switches and the one or more controlled switches, wherein the one or more controlled switches comprise a first pair of gate-driven semiconductor switches and a second pair of gate-driven semiconductor switches. - View Dependent Claims (29, 30)
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Specification