Series interleaved boost converter power factor correcting power supply
First Claim
1. A power factor correcting power supply comprising:
- a first boost converter that includes a first boost sub-circuit coupled with a second boost sub-circuit;
a second boost converter coupled in series with the first boost converter, where the second boost converter includes a third boost sub-circuit coupled with a fourth boost sub-circuit, where the first and second boost converters are configured to receive an input voltage and supply a boost voltage; and
a power factor correction controller coupled with the first and second boost converters, where the power factor correction controller is configured to control the first and second boost converters with interleave as a function of the boost voltage.
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Accused Products
Abstract
A power factor correcting power supply includes an input stage power converter and an output stage power converter. The input stage power converter includes a plurality of series connected boost switches and a power factor correction controller. The power factor correction controller may direct the operation of the boost switches with series interleave phasing to perform power factor correction and voltage regulation. The boost switches are supplied input voltage and input current from a power source. The input voltage is converted to a DC boost voltage by high frequency series interleaved switching of the boost switches. The DC boost voltage is converted to a DC output voltage by the output stage power converter. The DC output voltage is provided on a DC rail for a load of the power factor correcting power supply.
102 Citations
55 Claims
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1. A power factor correcting power supply comprising:
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a first boost converter that includes a first boost sub-circuit coupled with a second boost sub-circuit;
a second boost converter coupled in series with the first boost converter, where the second boost converter includes a third boost sub-circuit coupled with a fourth boost sub-circuit, where the first and second boost converters are configured to receive an input voltage and supply a boost voltage; and
a power factor correction controller coupled with the first and second boost converters, where the power factor correction controller is configured to control the first and second boost converters with interleave as a function of the boost voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A power factor correcting power supply comprising:
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an input stage power converter that includes at least four boost switches coupled in series, the at least four boost switches configured to be coupled in parallel with an input voltage; and
a power factor correction controller coupled with the at least four boost switches, the power factor correction controller configured to direct the at least four boost switches independently with interleave to provide a DC boost voltage from the input voltage, where the power factor correction controller is configured with feedforward control to direct the at least four boost switches as a function of the DC boost voltage. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A power factor correcting power supply comprising:
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an input stage power converter that includes a power factor correction controller and a first boost converter coupled in series with a second boost converter, where the first and second boost converters are controlled with interleave by the power factor correction controller to supply a DC boost voltage and to control a wave shape of an AC input current supplyable to the power factor correcting power supply by a power source; and
an output stage power converter coupled with the first and second boost converters, where the output stage power converter is configured to balance the boost voltage supplied with the first and second boost converters. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A power factor correcting power supply comprising:
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an input stage power converter that includes a first pair of boost switches coupled in series and a second pair of boost switches coupled in series, where the first and the second pair of boost switches are coupled in series;
means for controlling power factor coupled with the first and the second pair of boost switches, the means for controlling power factor configured to control each of the first and the second pair of boost switches with interleave to provide a portion of a boost voltage; and
an output stage power converter coupled with the input stage power converter, where the output stage power converter includes a first output converter coupled with the first pair of boost switches and a second output converter coupled with the second pair of boost switches, where the output stage power converter is configured to substantially balance the portion of the boost voltage provided by each of the first and the second pair of boost switches. - View Dependent Claims (29, 30, 31, 32, 33)
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34. A power factor correcting power supply comprising:
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a first boost switch and a second boost switch, the first and second boost switches coupled in series and configured to be coupled in parallel with an AC power source;
a first boost sub-switch coupled in series with the first boost switch;
a second boost sub-switch coupled in series with the second boost switch;
a boost capacitor coupled across at least one of the first boost switch coupled in series with the first boost sub-switch and the second boost switch coupled in series with the second boost sub-switch; and
a power factor correction controller coupled with the first and second boost switches and the first and second boost sub-switches, where the first and second boost switches and the first and second boost sub-switches are switchable to develop at least a portion of a DC boost voltage on the boost capacitor from an AC input voltage supplyable from the AC power source. - View Dependent Claims (35, 36, 37, 38, 39)
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40. A power factor correcting power supply comprising:
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a first boost switch coupled in series with a second boost switch, where the first and second boost switches are configured to be coupled in parallel with an AC power source, a boost inductor coupled with each of the first and second boost switches;
a boost capacitor coupled in parallel with the first and second boost switches, where the first and second boost switches are switchable to magnetize the boost inductor and charge the boost capacitor when the boost inductor is demagnetized to produce a DC boost voltage on the boost capacitor; and
a power factor correction controller coupled with the first and second boost switches, where the power factor correction controller is configured to control the first and second boost switches with feedforward control based on the DC boost voltage. - View Dependent Claims (41, 42, 43, 44, 45, 46)
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47. A method of performing power factor correction with a power factor correcting power supply, the method comprising:
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providing an power source having an input voltage and an input current;
interleave switching at least four boost switches that are coupled in series across the power source to convert the input voltage to a first DC voltage;
converting the first DC voltage to a second DC voltage with an output stage power converter; and
supplying the second DC voltage to a power rail to supply a load. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55)
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Specification