ISOLATED DC/DC AND DC/AC CONVERTERS AND CONTROLLING METHODS THEREOF HAVING RELATIVELY BETTER EFFECTIVENESS
First Claim
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1. An isolated DC/DC converter, comprising:
- a DC/AC switching device receiving a DC input voltage for outputting a first AC output voltage;
a transformer receiving the first AC output voltage for outputting a second AC output voltage;
a rectifier receiving the second AC output voltage for outputting a DC output voltage; and
a duty ratio and frequency modulating apparatus coupled to the rectifier and the DC/AC switching device for generating a driving signal to adjust a duty ratio and a frequency of the DC/AC switching device so as to regulate the DC output voltage accordingly.
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Abstract
The configurations of an isolated DC/DC converter and an isolated DC/AC converter and the controlling methods thereof are provided. The proposed isolated DC/DC converter includes a DC/AC switching device, a transformer, a rectifier, and a duty ratio and frequency modulating apparatus coupled to the rectifier and the DC/AC switching device for generating a driving signal to adjust a duty ratio and a frequency of the switching device so as to regulate an output DC voltage of the converter.
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Citations
20 Claims
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1. An isolated DC/DC converter, comprising:
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a DC/AC switching device receiving a DC input voltage for outputting a first AC output voltage; a transformer receiving the first AC output voltage for outputting a second AC output voltage; a rectifier receiving the second AC output voltage for outputting a DC output voltage; and a duty ratio and frequency modulating apparatus coupled to the rectifier and the DC/AC switching device for generating a driving signal to adjust a duty ratio and a frequency of the DC/AC switching device so as to regulate the DC output voltage accordingly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 12, 13, 14)
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9. An isolated DC/AC converter, comprising:
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a DC/AC switching device receiving a DC input voltage for outputting an AC output voltage; and a duty ratio and frequency modulating apparatus coupled to the DC/AC switching device for generating a driving signal to adjust a duty ratio and a frequency of the DC/AC switching device so as to regulate the AC output voltage accordingly. - View Dependent Claims (10, 11)
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15. A controlling method for an isolated DC/DC converter, wherein the converter comprises a DC/AC switching device, a rectifier and a duty ratio and frequency modulating apparatus coupled to the rectifier and the DC/AC switching device, comprising the steps of:
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(a) receiving a DC input voltage via the DC/AC switching device for outputting an AC output voltage; (b) receiving the AC output voltage via the rectifier for outputting a DC output voltage; and (c) generating a driving signal via the duty ratio and frequency modulating apparatus for adjusting a duty ratio and a frequency of the DC/AC switching device so as to regulate the DC output voltage accordingly. - View Dependent Claims (16, 17)
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18. A controlling method for an isolated DC/AC converter, wherein the converter comprises a DC/AC switching device and a duty ratio and frequency modulating apparatus coupled to the DC/AC switching device, comprising the steps of:
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(a) receiving a DC input voltage via the DC/AC switching device for outputting an AC output voltage; and (b) generating a driving signal via the duty ratio and frequency modulating apparatus for adjusting a duty ratio and a frequency of the switching device so as to regulate the AC output voltage accordingly. - View Dependent Claims (19, 20)
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Specification