US6462964B2
Expired / Lapsed
US
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High frequency power generator and related methods
Assignee: Renesas Electronics America Inc
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Filing: 2001-10-23
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Granted: 2002-10-08
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Expires: 2021-10-23
Abstract
Abstract Method and apparatus are disclosed for providing a constant voltage, high frequency sinusoidal output across a varying load, using either a single or multiple switch topology operating at constant frequency while maintaining high efficiency over the entire load range. This embodiment is especially suited to applications which require the sinusoidal voltage be held very close to a desired value in the presence of rapid changes in the conductance of the load, even in the sub-microsecond time domain as is common in computer applications and the like and in powering electronics equipment, especially a distributed system and especially a system wherein low voltage at high current is required. Embodiments and sub elements provide energy storage for low voltage, high current electronic loads, an ability to supply current with rapid time variation, connection of the energy storage element to the electronic load through specially configured conductors designed to minimize the created magnetic field around said conductors, providing extremely low inductance connections, permitting larger energy storage elements to be utilized, permitting energy storage to be located relatively remotely from the powered electronic load, and a steady voltage from a transformer isolated, high frequency ac to dc converter under varying load without the necessity for feedback control, among other aspects. The addition of capacitors which interact with the leakage inductance of the transformer to produce a natural regulation condition is used and the relationship between the value of the leakage inductance of the transformer and that of the added capacitances is different from the condition of resonance at the operating frequency.
Inventors
- 👤 Robert M. Porter
- 👤 Gennady G. Gurov
- 👤 Anatoli V. Ledenev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:31
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/33561; E; E02; E02D; E02D7/00; E02D7/26; G; G06; G06F; G06F1/00; G06F1/26; H02J; H02J1/00; H02J1/002; H02J1/08; H02J1/082; H02M1/00; H02M1/08; H02M1/088; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156; H02M3/158; E02D2250/00; E02D2250/0061; H02M1/0083; H02M1/009
Claims Analysis
Total Claims: 62
Claim 1
Independent Claim
101 words
A high frequency power generator to provide power to a variable load comprising: a. a supply of power; b. a high frequency driver; c. at least one switch responsive to said high frequency driver and said supply of power wherein said at least one switch establishes a high frequency alternating power output; d. a variable load which is responsive to said high frequency alternating power output; and e. a passive, high efficiency, constant output response network which is responsive to said high frequency alternating power output of said switch and which provides a substantially constant output regardless of said variable load.
Claim 2
Dependent Claim
101 words
A high frequency power generator to provide power to a variable load comprising: a. a supply of power; b. a high frequency driver; c. at least one switch responsive to said high frequency driver and said supply of power wherein said at least one switch establishes a high frequency alternating power output; d. a variable load which is responsive to said high frequency alternating power output; and e. a passive, high efficiency, constant output response network which is responsive to said high frequency alternating power output of said switch and which provides a substantially constant output regardless of said variable load.
Claim 3
Dependent Claim
143 words
A high frequency power generator as described in claim 1 wherein said passive, high efficiency, constant output response network provides a substantially constant output selected from a group consisting of: a substantially constant switch voltage output which is substantially constant over all levels at which said variable load exists practically, a substantially constant load voltage input which is substantially constant over all levels at which said variable load exists practically, a substantially constant switch voltage Fourier transform which is substantially constant over all levels at which said variable load exists practically, a substantially constant switch voltage output waveform which is substantially constant over all levels at which said variable load exists practically, a substantially constant switch voltage transition endpoint which is substantially constant over all levels at which said variable load exists practically, and all permutations and combinations of each of the above.
Claim 4
Dependent Claim
24 words
A high frequency power generator as described in claim 1 wherein said passive, high efficiency, constant output response network comprises a fast-acting response network.
Claim 5
Dependent Claim
48 words
A high frequency power generator as described in claim 1 wherein said variable load comprises a variable DC load and further comprising a rectifier element which converts said high frequency alternating power output to a component DC supply voltage and to which said variable DC load is responsive.
Claim 6
Dependent Claim
31 words
A high frequency power generator as described in claim 4 wherein said variable DC load comprises a load which is capable of varying from said nominal load to an open circuit.
Claim 7
Dependent Claim
31 words
A high frequency power generator as described in claim 4 wherein said variable DC load comprises a load which is capable of varying from said nominal load to a short circuit.
Claim 8
Dependent Claim
23 words
A high frequency power generator as described in claim 1 wherein said passive, high efficiency, constant output response network has no steering diodes.
Claim 9
Dependent Claim
43 words
A high frequency power generator as described in claim 1 wherein said high frequency driver has a drive amplitude, and further comprising direct drive bias alteration circuitry to which said high frequency driver is responsive and which is responsive to said drive amplitude.
Claim 10
Dependent Claim
37 words
A high frequency power generator as described in claim 8 wherein said at least one switch comprises two switches which each establish a conduction angle, and wherein said direct drive bias alteration circuitry maintains said conduction angles.
Claim 11
Dependent Claim
29 words
A high frequency power generator as described in claim 8 wherein said direct drive bias alteration circuitry comprises: a. voltage divider circuitry; and b. at least one diode element.
Claim 12
Dependent Claim
17 words
A system as described in claim 1 wherein said network comprises a network with no feedback system.
Claim 13
Dependent Claim
81 words
A system as described in claim 1 wherein said high frequency driver comprises a frequency driver operating at a frequency selected from a group consisting of: a frequency greater than at least about 300 kHz, a frequency greater than at least about 500 kHz, a frequency greater than at least about 1 MHz, a frequency greater than at least about 3 MHz, a frequency greater than at least about 10 MHz, and a frequency greater than at least about 30 MHz.
Claim 14
Dependent Claim
16 words
A system as described in claim 1 wherein said network comprises a fast acting response network.
Claim 15
Dependent Claim
51 words
A system as described in claim 13 wherein said fast acting response network comprises a network having an effective capacitance selected from a group consisting of: less than about 0.3 millifarads, less than about 0.5 millifarads, less than about 1 millifarads, less than about 3 millifarads, less than about 10 millifarads.
Claim 16
Dependent Claim
122 words
A system as described in claim 13 wherein said fast acting response network comprises a response network which is capable of reacting within a period of time selected from a group consisting of: less than about a period of a Nyquist frequency, less than about two and a half times a period of a Nyquist frequency, less than about five times a period of a Nyquist frequency, less than about ten times a period of a Nyquist frequency, less than about twice a period of said alternating power output, less than about four times a period of said alternating power output, less than about 200 nanoseconds, less than about 500 nanoseconds, less than about 1000 nanoseconds, and less than about 2000 nanoseconds.
Claim 17
Dependent Claim
56 words
A system as described in claim 1 wherein said load comprises a load operating at a nominal DC voltage selected from a group consisting of: less than about 2 volts, less than about 1.8 volts, less than about 1.5 volts, less than about 1.3 volts, less than about 1 volt, and less than about 0.4 volts.
Claim 18
Dependent Claim
40 words
A system as described in claim 16 wherein said load comprises a load operating at a maximum current selected from a group consisting of: more than about 15 amperes, more than about 20 amperes, and more than about 50 amperes.
Claim 19
Dependent Claim
16 words
A system as described in claim 1 wherein said network comprises a high efficiency response network.
Claim 20
Dependent Claim
51 words
A system as described in claim 17 wherein said high efficiency response network comprises a response network having an efficiency selected from a group consisting of: at least about 80%, at least about 85%, at least about 90%, at least about 95%, at least about 98% and at least about 99%.
Claim 21
Dependent Claim
17 words
A system as described in claim 1 wherein said switch is part of a single switch amplifier.
Claim 22
Dependent Claim
36 words
A system as described in claim 20 wherein said single switch amplifier comprises a single switch amplifier selected from a group consisting of: a class E amplifier, a class AE amplifier, and a class C amplifier.
Claim 23
Dependent Claim
17 words
A system as described in claim 1 wherein said switch is part of a dual switch amplifier.
Claim 24
Dependent Claim
26 words
A system as described in claim 1 wherein said network comprises constant output voltage circuitry which is responsive to said alternating power output of said switch.
Claim 25
Dependent Claim
27 words
A system as described in claim 23 wherein said network further comprises constant trajectory circuitry which is also responsive to said alternating power output of said switch.
Claim 26
Dependent Claim
45 words
A system as described in claim 24 wherein said network further comprises: a. drive bias alteration circuitry to which said drive is responsive and having a control input; and b. a direct control network which provides the control input to said drive bias alteration circuitry.
Claim 27
Dependent Claim
27 words
A system as described in claim 24 wherein said network further comprises energy maintenance circuitry which is also responsive to said alternating power output of said switch.
Claim 28
Dependent Claim
26 words
A system as described in claim 26 wherein said network further comprises stabilizing circuitry which is also responsive to said alternating power output of said switch.
Claim 29
Dependent Claim
32 words
A system as described in claim 24 wherein said switch has output capacitance, and wherein said circuitry is tuned to coordinate with the frequency of said alternating power output and output capacitance.
Claim 30
Dependent Claim
16 words
A system as described in claim 27 wherein said circuitry comprises circuitry with no feedback system.
Claim 31
Dependent Claim
17 words
A system as described in claim 13 wherein said network comprises a network with no feedback system.
Claim 32
Independent Claim
76 words
A method of generating high frequency power to provide power to a load comprising the steps of: a. supplying power; b. inverting said power through at least one switch to establish a high frequency alternating power output; c. high frequency driving said switch; d. powering a variable load responsive to said high frequency alternating power output; and e. passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load.
Claim 33
Independent Claim
76 words
A method of generating high frequency power to provide power to a load comprising the steps of: a. supplying power; b. inverting said power through at least one switch to establish a high frequency alternating power output; c. high frequency driving said switch; d. powering a variable load responsive to said high frequency alternating power output; and e. passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load.
Claim 34
Dependent Claim
163 words
A method of generating high frequency power to provide power to a load as described in claim 31 wherein said step of passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load establishes a constant output selected from a group consisting of: a substantially constant switch voltage output which is substantially constant over all levels at which said variable load exists practically, a substantially constant load voltage input which is substantially constant over all levels at which said variable load exists practically, a substantially constant switch voltage Fourier transform which is substantially constant over all levels at which said variable load exists practically, a substantially constant switch voltage output waveform which is substantially constant over all levels at which said variable load exists practically, a substantially constant switch voltage transition endpoint which is substantially constant over all levels at which said variable load exists practically, and all permutations and combinations of each of the above.
Claim 35
Dependent Claim
57 words
A method of generating high frequency power to provide power to a load as described in claim 31 wherein said step of passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load comprises the step of responding to variations in said varying load by a fast acting response network.
Claim 36
Dependent Claim
48 words
A method of generating high frequency power to provide power to a load as described in claim 31 and further comprising the step of rectifying in response to said high frequency alternating power output to create a component DC supply voltage to which said variable load is responsive.
Claim 37
Dependent Claim
42 words
A method of generating high frequency power to provide power to a load as described in claim 34 wherein said step of powering a variable load comprises the step of powering said variable load from a nominal load to an open circuit.
Claim 38
Dependent Claim
42 words
A method of generating high frequency power to provide power to a load as described in claim 34 wherein said step of powering a variable load comprises the step of powering said variable load from a nominal load to a short circuit.
Claim 39
Dependent Claim
51 words
A method of generating high frequency power to provide power to a load as described in claim 31 wherein said step of passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load comprises the step of utilizing a network with no steering diodes.
Claim 40
Dependent Claim
38 words
A method of generating high frequency power to provide power to a load as described in claim 1 wherein said step of high frequency driving said switch comprises the step of utilizing a direct drive bias alteration element.
Claim 41
Dependent Claim
58 words
A method of generating high frequency power to provide power to a load as described in claim 38 wherein said step of high frequency driving said switch comprises the step of utilizing at least two switches which each establishing a conduction angle, and wherein said step of utilizing a direct drive bias alteration element maintains said conduction angles.
Claim 42
Dependent Claim
46 words
A method of generating high frequency power to provide power to a load as described in claim 38 wherein said step of utilizing a direct drive bias alteration element comprises the steps of: a. utilizing voltage divider circuitry; and b. utilizing at least one diode element.
Claim 43
Dependent Claim
51 words
A method of generating high frequency power to provide power to a load as described in claim 31 wherein said step of passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load comprises the step of utilizing a network with no feedback system.
Claim 44
Dependent Claim
96 words
A method of generating high frequency power to provide power to a load as described in claim 31 wherein said step of high frequency driving said switch comprises the step of operating at a frequency selected from a group consisting of: a frequency greater than at least about 300 kHz, a frequency greater than at least about 500 kHz, a frequency greater than at least about 1 MHz, a frequency greater than at least about 3 MHz, a frequency greater than at least about 10 MHz, and a frequency greater than at least about 30 MHz.
Claim 45
Dependent Claim
50 words
A method of generating high frequency power to provide power to a load as described in claim 31 wherein said step of passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load comprises the step of utilizing a fast acting response network.
Claim 46
Dependent Claim
82 words
A method of generating high frequency power to provide power to a load as described in claim 43 wherein said step of passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load comprises the step of utilizing a network having an effective capacitance selected from a group consisting of: less than about 0.3 millifarads, less than about 0.5 millifarads, less than about 1 millifarads, less than about 3 millifarads, less than about 10 millifarads.
Claim 47
Dependent Claim
152 words
A method of generating high frequency power to provide power to a load as described in claim 43 wherein said step of passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load comprises the step of utilizing a network which is capable of reacting within a period of time selected from a group consisting of: less than about a period of a Nyquist frequency, less than about two and a half times a period of a Nyquist frequency, less than about five times a period of a Nyquist frequency, less than about ten times a period of a Nyquist frequency, less than about twice a period of said alternating power output, less than about four times a period of said alternating power output, less than about 200 nanoseconds, less than about 500 nanoseconds, less than about 1000 nanoseconds, and less than about 2000 nanoseconds.
Claim 48
Dependent Claim
81 words
A method of generating high frequency power to provide power to a load as described in claim 31 wherein said step of powering a variable load responsive to said high frequency alternating power output comprises the step of operating at a nominal DC voltage selected from a group consisting of: less than about 2 volts, less than about 1.8 volts, less than about 1.5 volts, less than about 1.3 volts, less than about 1 volt, and less than about 0.4 volts.
Claim 49
Dependent Claim
65 words
A method of generating high frequency power to provide power to a load as described in claim 46 wherein said step of powering a variable load responsive to said high frequency alternating power output comprises the step of operating at a maximum current selected from a group consisting of: more than about 15 amperes, more than about 20 amperes, and more than about 50 amperes.
Claim 50
Dependent Claim
50 words
A method of generating high frequency power to provide power to a load as described in claim 31 wherein said step of passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load comprises the step of utilizing a high efficiency response network.
Claim 51
Dependent Claim
70 words
A method of generating high frequency power to provide power to a load as described in claim 48 wherein said step of utilizing a high efficiency response network comprises the step of utilizing a response network having an efficiency selected from a group consisting of: at least about 80%, at least about 85%, at least about 90%, at least about 95%, at least about 98% and at least about 99%.
Claim 52
Dependent Claim
47 words
A method of generating high frequency power to provide power to a load as described in claim 31 wherein said step of inverting said power through at least one switch to establish a high frequency alternating power output comprises the step of utilizing a single switch amplifier.
Claim 53
Dependent Claim
55 words
A method of generating high frequency power to provide power to a load as described in claim 50 wherein said step of utilizing a single switch amplifier comprises the step of utilizing a single switch amplifier selected from a group consisting of: a class E amplifier, a class AE amplifier, and a class C amplifier.
Claim 54
Dependent Claim
47 words
A method of generating high frequency power to provide power to a load as described in claim 31 wherein said step of inverting said power through at least one switch to establish a high frequency alternating power output comprises the step of utilizing a dual switch amplifier.
Claim 55
Dependent Claim
60 words
A method of generating high frequency power to provide power to a load as described in claim 31 wherein said step of passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load comprises the step of utilizing constant output voltage circuitry which is responsive to said alternating power output of said switch.
Claim 56
Dependent Claim
57 words
A method of generating high frequency power to provide power to a load as described in claim 53 wherein said step of utilizing constant output voltage circuitry which is responsive to said alternating power output of said switch comprises the step of utilizing constant trajectory circuitry which is responsive to said alternating power output of said switch.
Claim 57
Dependent Claim
47 words
A method of generating high frequency power to provide power to a load as described in claim 54 and further comprising the steps of: a. utilizing drive bias alteration circuitry having a control input; and b. utilizing a direct control network for said drive bias alteration circuitry.
Claim 58
Dependent Claim
40 words
A method of generating high frequency power to provide power to a load as described in claim 54 and further comprising the step of utilizing energy maintenance circuitry which is also responsive to said alternating power output of said switch.
Claim 59
Dependent Claim
39 words
A method of generating high frequency power to provide power to a load as described in claim 56 and further comprising the step of utilizing stabilizing circuitry which is also responsive to said alternating power output of said switch.
Claim 60
Dependent Claim
66 words
A method of generating high frequency power to provide power to a load as described in claim 54 wherein said switch has output capacitance, and wherein said step of utilizing constant output voltage circuitry which is responsive to said alternating power output of said switch comprises the step of utilizing circuitry tuned to coordinate with the frequency of said alternating power output and said output capacitance.
Claim 61
Dependent Claim
50 words
A method of generating high frequency power to provide power to a load as described in claim 57 wherein said step of passively responding to said variable load to establish a high efficiency constant output irrespective of said variable load comprises the step of utilizing circuitry with no feedback system.
Claim 62
Dependent Claim
38 words
A method of generating high frequency power to provide power to a load as described in claim 43 wherein said step of utilizing a fast acting response network comprises the step of utilizing circuitry with no feedback system.
References Cited (Backward Citations)
US3919656A
Cited
US3848175A
Cited
US4449174A
Cited
US4605999A
Cited
US4785387A
Cited
US4788634A
Cited
US5019717A
Cited
US4891746A
Cited
US5187580A
Cited
US5187457A
Cited
US5179512A
Cited
US6046546A
Cited
US5982645A
Cited
US5406051A
Cited
US5444608A
Cited
US5712772A
Cited
US5991168A
Cited
US6055163A
Cited
WO2000057543A1
Cited
US6307757B1
Cited
WO2001003279A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2005-10-07 | 2006-04-08 | 2006-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-10-07 | 2010-04-08 | 2010-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-10-07 | 2014-04-08 | 2014-10-08 | $7700.00 | Window Closed / Lapsed |