DC/DC POWER CONVERTING APPARATUS
First Claim
1. A DC/DC power converting apparatus comprising:
- a plurality of circuits connected in series, each of said circuits including a high-voltage side device and a low-voltage side device made of semiconductor switching devices connected in series as well as a smoothing capacitor having positive and negative terminals between which said semiconductor switching devices are connected, capacitors for energy transfer connected individually between one specific circuit and the others of said plurality of circuits, and inductors disposed in charging and discharging paths of said capacitors,wherein, among said plurality of circuits, at least a specific circuit is used as a driving inverter circuit and any other circuit is used as a rectifier circuit, and said DC/DC power converting apparatus performs DC/DC conversion through charging and discharging operation of said capacitors.
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Accused Products
Abstract
Three or more circuits including a driving inverter circuit and rectifier circuits are connected in series, each of the circuits including a high-voltage side MOSFET and a low-voltage side MOSFET connected in series as well as a smoothing capacitor having positive and negative terminals between which the MOSFETs are connected. LC series circuits, each including a capacitor and an inductor, are disposed individually between one specific circuit and the other circuits with periods of resonance of the LC series circuits made equal to one another. In performing DC/DC power conversion through charging and discharging operation of the capacitors, a resonance phenomenon of the LC series circuits is used to improve conversion efficiency and achieve a reduction in size of the apparatus structure.
21 Citations
24 Claims
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1. A DC/DC power converting apparatus comprising:
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a plurality of circuits connected in series, each of said circuits including a high-voltage side device and a low-voltage side device made of semiconductor switching devices connected in series as well as a smoothing capacitor having positive and negative terminals between which said semiconductor switching devices are connected, capacitors for energy transfer connected individually between one specific circuit and the others of said plurality of circuits, and inductors disposed in charging and discharging paths of said capacitors, wherein, among said plurality of circuits, at least a specific circuit is used as a driving inverter circuit and any other circuit is used as a rectifier circuit, and said DC/DC power converting apparatus performs DC/DC conversion through charging and discharging operation of said capacitors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14)
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12. (canceled)
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15. A DC/DC power converting apparatus comprising:
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a plurality of circuits connected in series, said circuits including a driving inverter circuit configured with a high-voltage side device and a low-voltage side device made of semiconductor switching devices connected in series as well as a smoothing capacitor having positive and negative terminals between which said semiconductor switching devices connected and a rectifier circuit configured with a high-voltage side device and a low-voltage side device made of diode devices connected in series as well as a smoothing capacitor having positive and negative terminals between which said diode devices are connected, capacitors for energy transfer connected individually between one specific circuit and the others of said plurality of circuits, and inductors disposed in charging and discharging paths of said capacitors, wherein said DC/DC power converting apparatus performs DC/DC conversion through charging and discharging operation of said capacitors. - View Dependent Claims (16, 17, 18, 19, 20, 21, 23, 24)
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22. (canceled)
Specification