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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0947893 (2013-07-22) |
등록번호 | US-9143042 (2015-09-22) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 1 인용 특허 : 533 |
A power converter nearly losslessly delivers energy and recovers energy from capacitors associated with controlled rectifiers in a secondary winding circuit, each controlled rectifier having a parallel uncontrolled rectifier. First and second primary switches in series with first and second primary
A power converter nearly losslessly delivers energy and recovers energy from capacitors associated with controlled rectifiers in a secondary winding circuit, each controlled rectifier having a parallel uncontrolled rectifier. First and second primary switches in series with first and second primary windings, respectively, are turned on for a fixed duty cycle, each for approximately one half of the switching cycle. Switched transition times are short relative to the on-state and off-state times of the controlled rectifiers. The control inputs to the controlled rectifiers are cross-coupled from opposite secondary transformer windings.
1. A DC-DC power converter system providing plural regulated DC outputs, comprising: a DC input having a DC input voltage;an isolating converter comprising: a primary transformer winding circuit having at least one primary winding that receives power from the DC input; anda secondary transformer win
1. A DC-DC power converter system providing plural regulated DC outputs, comprising: a DC input having a DC input voltage;an isolating converter comprising: a primary transformer winding circuit having at least one primary winding that receives power from the DC input; anda secondary transformer winding circuit having at least one secondary winding coupled to the at least one primary winding and having plural controlled rectifiers, each of the plural controlled rectifiers having a parallel uncontrolled rectifier and being in circuit with at least one secondary winding, to provide an isolated DC output that varies by more than a few percent as the input voltage varies over its design range, the at least one primary winding having a voltage waveform with transition times that are short relative to on-state and off-state times of the plural controlled rectifiers; andplural non-isolating switching regulators, each of the plural non-isolating switching regulators receiving power from the isolated DC output of the isolating converter and providing one of the plural regulated DC outputs having a regulated voltage. 2. A power converter system as claimed in claim 1 wherein the switching regulators are down converters. 3. A power converter system as claimed in claim 1 wherein signals controlling the controlled rectifiers are provided by the at least one secondary winding. 4. A power converter system as claimed in claim 1 wherein the isolation converter is a step down converter. 5. A power converter system as claimed in claim 1 wherein the DC input provides a voltage within the range of 36 to 75 volts. 6. A power converter system as claimed in claim 1 wherein the isolated DC output of the isolating converter is about 12 volts. 7. A power converter system as claimed in claim 1 wherein each regulated voltage of each of the regulated DC outputs is of a voltage level to drive logic circuitry. 8. A power converter system as claimed in claim 7 wherein the DC input provides a voltage within the range of 36 to 75 volts. 9. A power converter system as claimed in claim 8 wherein the isolated DC output of the isolating converter is about 12 volts. 10. A power converter system as claimed in claim 7 wherein the isolated DC output of the isolating converter is about 12 volts. 11. A power converter system as claimed in claim 1 wherein the isolated DC output drops with increasing current flow through the isolating converter. 12. A power converter system as claimed in claim 1 wherein the at least one primary winding has a voltage waveform with a fixed duty cycle. 13. A power converter system as claimed in claim 12 wherein the DC input provides a voltage within the range of 36 to 75 volts. 14. A power converter system as claimed in claim 13 wherein the isolated DC output of the isolating converter is about 12 volts. 15. A power converter system as claimed in claim 12 wherein the isolated DC output of the isolating converter is about 12 volts. 16. A power converter system as claimed in claim 1 wherein the isolating converter does not regulate the isolated DC output. 17. A DC-DC power converter system providing plural regulated DC outputs, comprising: a DC input;an isolating converter comprising: a primary transformer winding circuit having at least one primary winding that receives power from the DC input; anda secondary transformer winding circuit having at least one secondary winding coupled to the at least one primary winding and having plural controlled rectifiers, each of the plural controlled rectifiers having a parallel uncontrolled rectifier and being in circuit with at least one secondary winding, to provide an isolated DC output, the at least one primary winding having a voltage waveform with transition times that are short relative to on-state and off-state times of the plural controlled rectifiers and with a fixed duty cycle when the isolating converter is non-regulating; andplural non-isolating switching regulators, each of the plural non-isolating switching regulators receiving power from the isolated DC output of the isolating converter and providing one of the plural regulated DC outputs having a regulated voltage. 18. A power converter system as claimed in claim 17 wherein each regulated voltage of each of the regulated DC outputs is of a voltage level to drive logic circuitry. 19. A power converter system as claimed in claim 18 wherein the DC input provides a voltage within the range of 36 to 75 volts. 20. A power converter system as claimed in claim 19 wherein the isolated DC output of the isolating converter is about 12 volts. 21. A method of providing plural regulated DC outputs, comprising: from a DC input having a DC input voltage, providing an isolated DC output that varies by more than a few percent as the DC input voltage varies over its design range by applying power from the DC input through a primary transformer winding circuit, having at least one primary winding, and a secondary transformer winding circuit, having at least one secondary winding coupled to the at least one primary winding and having plural controlled rectifiers, each of the plural controlled rectifiers having a parallel uncontrolled rectifier and being in circuit with the at least one secondary winding, the at least one primary winding having a voltage waveform with transition times that are short relative to on-state and off-state times of the plural controlled rectifiers; andapplying power from the isolated DC output to plural non-isolating switching regulators, each of the plural non-isolating switching regulators providing one of the plural regulated DC outputs having a regulated voltage. 22. A method of providing plural regulated DC outputs, comprising: from a DC input, providing an isolated DC output by applying power from the DC input through a primary transformer winding circuit, having at least one primary winding, and a secondary transformer winding circuit, having at least one secondary winding coupled to the at least one primary winding and having plural controlled rectifiers, each of the plural controlled rectifiers having a parallel uncontrolled rectifier and being in circuit with the at least one secondary winding, the at least one primary winding having a voltage waveform with transition times that are short relative to on-state and off-state times of the plural controlled rectifiers and with a fixed duty cycle when the isolated DC output is non-regulated; andapplying power from the isolated DC output to plural non-isolating switching regulators, each of the plural non-isolating switching regulators providing one of the plural regulated DC outputs having a regulated voltage.
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