Switching power supply device
In a circuit element 10 a , resonant circuits are arranged in parallel. A resonant capacitor Crk q of a q-th resonant circuit arranged in parallel has one end connected in series to a resonance reactor Lr q and a primary winding N 1 q of a transformer Tr q . The resonant capacitor Crk q of the q-th resonance circuit arranged in parallel has another end connected to the resonant capacitor Crk q of a q-th one of the resonance circuit arranged in parallel in another one of the circuit elements 10 a so that a k-dimensional multiphase LLC converter having a phase difference of 360°/Pk is constructed by Pk circuit elements.
1 . A switching power supply device comprising:
a plurality of half-bridge LLC converters each configured as a circuit element, each of the plurality of half-bridge LLC converter including:
a first switch element and a second switch element connected in series to both ends of a DC power supply; and
m resonant circuits arranged in parallel, each including a respective resonant reactor having one end connected to a connection point between the first switch element and the second switch element, a respective primary winding of a respective transformer, and n respective resonant capacitors comprising a first order resonant capacitor to an n th order resonant capacitor, wherein m is a natural number equal to or greater than two, and n is a natural number equal to or greater than two,
wherein a respective k th order resonant capacitor of a respective q th one of the m resonant circuits arranged in parallel has one end connected in series to the respective resonant reactor and the respective primary winding of the respective transformer, and another end connected to another k th order resonant capacitor of another q th one of the m resonant circuits arranged in parallel in another circuit element so that a k-dimensional multiphase LLC converter having a phase difference of 360°/Pk is constructed by Pk circuit elements, wherein k is a natural number between one and n, q is any natural number between one and m, and Pk is a natural number equal to or greater than one.
2 . The switching power supply device according to claim 1 , wherein a total number of the circuit elements is a product of numbers of phases included in dimensions.
3 . The switching power supply device according to claim 2 , wherein a total number of the m resonant circuits is a product of the product of numbers of phases included in the dimensions and a parallel number m.
4 . A switching power supply device comprising:
a plurality of half-bridge LLC converters each configured as a circuit element, each of the plurality of half-bridge LLC converters including:
a first switch element and a second switch element connected in series to both ends of a DC power supply;
a resonant reactor having one end connected to a connection point between the first switch element and the second switch element; and
m resonant circuits arranged in parallel, each including a respective primary winding of a respective transformer, and n respective resonant capacitors comprising a first order resonant capacitor to an n th order resonant capacitor, connected to another end of the resonant reactor, wherein m is a natural number equal to or greater than two, and n is a natural number equal to or greater than two,
wherein a respective k th order resonant capacitor of a respective q th one of the m resonant circuits arranged in parallel has one end connected in series to the resonant reactor and the respective primary winding of the respective transformer, and another end connected to another k th order resonant capacitor of another q th one of the m resonant circuits arranged in parallel in another circuit element so that a k-dimensional multiphase LLC converter having a phase difference of 360°/Pk is constructed by Pk circuit elements, wherein k is a natural number between one and n, q is any natural number between one and m, and Pk is a natural number equal to or greater than one.
5 . The switching power supply device according to claim 4 , wherein a total number of the circuit elements is a product of numbers of phases included in the dimensions.
6 . The switching power supply device according to claim 5 , wherein a total number of the m resonant circuits is a product of the product of numbers of phases included in the dimensions and a parallel number m.
7 . A switching power supply device comprising:
a plurality of half-bridge LLC converters each configured as a circuit element, each of the plurality of half-bridge LLC converter including:
a first switch element and a second switch element connected in series to both ends of a DC power supply; and
m resonant circuits arranged in parallel, each including a respective resonant reactor having one end connected to a connection point between the first switch element and the second switch element, a respective primary winding of a respective transformer, and n respective resonant capacitors comprising a zero order resonant capacitor to an n th order resonant capacitor, wherein m is a natural number equal to or greater than two, n is a natural number equal to or greater than two, and each of the zero order resonant capacitors is connected to a low potential input terminal of the DC power supply,
wherein a respective k th order resonant capacitor of a respective q th one of the m resonant circuits arranged in parallel has one end connected in series to the respective resonant reactor and the respective primary winding of the respective transformer, and another end connected to another k th order resonant capacitor of another q th one of the m resonant circuits arranged in parallel in another circuit element so that a k-dimensional multiphase LLC converter having a phase difference of 360°/Pk is constructed by Pk circuit elements, wherein k is a natural number between one and n, q is any natural number between one and m, and Pk is a natural number equal to or greater than one.
8 . The switching power supply device according to claim 7 , wherein a total number of the circuit elements is a product of numbers of phases included in dimensions.
9 . The switching power supply device according to claim 8 , wherein a total number of the m resonant circuits is a product of the product of numbers of phases included in the dimensions and a parallel number m.
10 . A switching power supply device comprising:
a plurality of half-bridge LLC converters each configured as a circuit element, each of the plurality of half-bridge LLC converters including:
a first switch element and a second switch element connected in series to both ends of a DC power supply;
a resonant reactor having one end connected to a connection point between the first switch element and the second switch element; and
m resonant circuits arranged in parallel, each including a respective primary winding of a respective transformer, and n respective resonant capacitors comprising a zero order resonant capacitor to an n th order resonant capacitor, connected to another end of the resonant reactor, wherein m is a natural number equal to or greater than two, n is a natural number equal to or greater than two, and each of the zero order resonant capacitor is connected to a low potential input terminal of the DC power supply,
wherein a respective k th order resonant capacitor of a respective q th one of the m resonant circuits arranged in parallel has one end connected in series to the resonant reactor and the respective primary winding of the respective transformer, and another end connected to another k th order resonant capacitor of another q th one of the m resonant circuits arranged in parallel in another circuit element so that a k-dimensional multiphase LLC converter having a phase difference of 360°/Pk is constructed by Pk circuit elements, wherein k is a natural number between one and n, q is any natural number between one and m, and Pk is a natural number equal to or greater than one.
11 . The switching power supply device according to claim 10 , wherein a total number of the circuit elements is a product of numbers of phases included in dimensions.
12 . The switching power supply device according to claim 11 , wherein a total number of the m resonant circuits is a product of the product of numbers of phases included in the dimensions and a parallel number m.