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Converter having low loss snubber

專(zhuān)利號(hào)
US10097081B1
公開(kāi)日期
2018-10-09
申請(qǐng)人
ACBEL POLYTECH INC.（TW New Taipei）
發(fā)明人
James D. Bucher, II; Alan D. Lauer; Emma C. Trzynka; Jason C. Dehn
IPC分類(lèi)
H02M1/34; H02M3/335; H02M1/44
技術(shù)領(lǐng)域
winding,wp,capacitor,diode,snubber,ws,voltage,primary,output,first
地域： New Taipei

摘要

The present application is a converter having a low loss snubber. The low loss snubber of the converter includes a clamping winding, a first capacitor, and a second capacitor. The clamping winding is magnetically coupled with a primary winding of a transformer of the converter. The primary winding to a secondary winding of the transformer leakage inductance energy is recovered by storing the energy in the second capacitor. When the second capacitor is discharging, the energy in the second capacitor may be further transferred to the first capacitor. When the first capacitor is discharging, energy in the first capacitor may be further returned to the power source. Therefore, the energy in the first capacitor and the energy in the second capacitor may not be consumed by a resistor, and power consumption of the low loss snubber may be decreased.

說(shuō)明書(shū)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

FIG. 3 is a circuit diagram of a second embodiment of a converter having a low loss snubber of the present invention;

FIG. 4 is a circuit diagram of a third embodiment of a converter having a low loss snubber of the present invention;

FIG. 5 is a circuit diagram of a fourth embodiment of a converter having a low loss snubber of the present invention;

FIG. 6 is a circuit diagram of a fifth embodiment of a converter having a low loss snubber of the present invention;

FIG. 7 is a circuit diagram of a sixth embodiment of a converter having a low loss snubber of the present invention;

FIGS. 8-11 are circuit diagrams showing schematic currents flowing directions of the present invention;

FIG. 12 is two waveforms of voltages of two terminals of a first capacitor of the low loss snubber of the present invention;

FIGS. 13 and 14 are circuit diagrams showing schematic currents flowing directions of a conventional flyback converter having a conventional snubber.

DETAILED DESCRIPTION OF THE INVENTION

With reference to FIG. 1, the present invention is a converter having a low loss snubber, and the converter includes an input terminal I/P, the low loss snubber 11, a transformer with a primary winding Wp and a secondary winding Ws, a switch 12, a first output terminal O/P1, and a second output terminal O/P2.

權(quán)利要求

1
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