BRIDGELESS PFC CONVERTER WITH LOW COMMON-MODE NOISE AND HIGH POWER DENSITY
First Claim
1. A power factor correction converter, comprising:
- a boost inductor connected to an AC input terminal;
a switch circuit connected in series with the boost inductor;
a first series rectifier circuit having a junction node connected between the boost inductor and the switch circuit;
a second series rectifier circuit connected in parallel with the first series rectifier circuit and having a junction node connected to the switch circuit; and
an output capacitor connected in parallel with the second series rectifier circuit;
wherein the first series rectifier circuit comprises rectifying diodes having a fast reverse recovery characteristic, and the second series rectifier circuit comprises rectifying diodes having a slow reverse recovery characteristic.
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Accused Products
Abstract
A bridgeless power factor correction converter that can reduce common-mode noise and enhance power density is made up of a boost inductor coupled to an input end, a bidirectional switch connected in series with the boost inductor, a first series rectifying circuit having a junction node connected between the boost inductor and the bi-directional switch, a second series rectifying circuit connected in parallel with the first series rectifying circuit and having a junction node coupled to the bi-directional switch, and an output capacitor connected in parallel with the second series rectifying circuit, in which the second series rectifying circuit is made up of slow-recovery diodes and the first series rectifying circuit is made up of fast-recovery diodes.
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Citations
17 Claims
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1. A power factor correction converter, comprising:
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a boost inductor connected to an AC input terminal; a switch circuit connected in series with the boost inductor; a first series rectifier circuit having a junction node connected between the boost inductor and the switch circuit; a second series rectifier circuit connected in parallel with the first series rectifier circuit and having a junction node connected to the switch circuit; and an output capacitor connected in parallel with the second series rectifier circuit; wherein the first series rectifier circuit comprises rectifying diodes having a fast reverse recovery characteristic, and the second series rectifier circuit comprises rectifying diodes having a slow reverse recovery characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power factor correction converter, comprising:
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a first power converter stage, comprising; a first boost inductor connected to an AC input terminal; a first switch circuit connected in series with the first boost inductor; a first series rectifier circuit having a junction node connected between the first boost inductor and the first switch circuit; and a second series rectifier circuit connected in parallel with the first series rectifier circuit and having a junction node connected to the first switch circuit; a second power converter stage, comprising; a second boost inductor connect to the AC input terminal and connected in parallel with the first boost inductor; a second switch circuit connected between the second boost inductor and the first switch circuit; and a third series rectifier circuit connected in parallel with the second series rectifier circuit and having a junction node connected between the second boost inductor and the second switch circuit; and an output capacitor connected in parallel with the third series rectifier circuit; wherein the first series rectifier circuit and the third series rectifier circuit comprise rectifying diodes having a fast reverse recovery characteristic, and the second series rectifier circuit comprises rectifying diodes having a slow reverse recovery characteristic. - View Dependent Claims (11, 12, 13)
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14. A power factor correction converter, comprising:
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a first power converter stage, comprising; a first boost inductor connected to an AC input terminal; a first switch circuit connected in series with the first boost inductor; a first series rectifier circuit having a junction node connected between the first boost inductor and the first switch circuit; and a second series rectifier circuit connected in parallel with the first series rectifier circuit and having a junction node connected to the first switch circuit; a second power converter stage, comprising; a second boost inductor coupled to the AC input terminal and connected in parallel with the first boost inductor; a second switch circuit connected in series with the second boost inductor; a third series rectifier circuit having a junction node connected between the second boost inductor and the second switch circuit; and a fourth series rectifier circuit connected in parallel with the third series rectifier circuit and having a junction node connected to the second switch circuit; and an output capacitor connected in parallel with the fourth series rectifier circuit; wherein the first series rectifier circuit and the third series rectifier circuit comprise rectifying diodes having a fast reverse recovery characteristic, and the second series rectifier circuit and the fourth series rectifier circuit comprise rectifying diodes having a slow reverse recovery characteristic. - View Dependent Claims (15, 16, 17)
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Specification