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US4841220A
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US
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Dc-to-Dc converters using multi-resonant switches
Assignee: Virginia Innovation Partnership Corp
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Filing: 1987-09-23
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Granted: 1989-06-20
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Expires: 2007-09-23
Abstract
Abstract A generalized multi-resonant switch that combines current-mode and voltage-mode resonant switches. Application of the multi-resonant switch in zero-voltage switched multi-resonant converters results in reduction of the voltage stress to the switching transistor, increase of the load range and reduction of the switching frequency bandwidth. Each embodiment of the multi-resonant converter includes a multi-resonant switch having an active switch, a passive switch and reactive components for causing the active and passive switches to operate in a multi-resonant manner.
Inventors
- 👤 Wojciech A. Tabisz
- 👤 Fred C. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:40
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/01; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/33569; H02M3/33571; H02M3/33576; H02M3/33592; Y; Y02; Y02B; Y02B70/00; Y02B70/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
78 words
A multi-resonant converter for converting a DC input signal from a supply to a DC output signal to be imposed across a load, said device comprising: an input stage for receiving the DC input signal; an output stage for imposing said DC output signal across the load; an active switch and a passive switch interposed between said input and output stages; and reactive means for causing said active and passive switches to act together as a multi-resonant switch.
Claim 2
Dependent Claim
78 words
A multi-resonant converter for converting a DC input signal from a supply to a DC output signal to be imposed across a load, said device comprising: an input stage for receiving the DC input signal; an output stage for imposing said DC output signal across the load; an active switch and a passive switch interposed between said input and output stages; and reactive means for causing said active and passive switches to act together as a multi-resonant switch.
Claim 3
Dependent Claim
37 words
The converter of claim 1, wherein said reactive means comprises a first capacitor in parallel with said passive switch, an inductor in series with said active switch and a second capacitor in parallel with said active switch.
Claim 4
Dependent Claim
42 words
The converter of claim 1, wherein said reactive means comprises a first inductor in series with said active switch, a capacitor in parallel with said serially arranged active switch and first inductor, and a second inductor in series with said passive switch.
Claim 5
Dependent Claim
87 words
A multi-resonant converter for converting a Dc input signal from a supply to a DC output signal to be imposed across a load, said device comprising: input stage for receiving the DC input signal; an output stage for imposing said DC output signal across the load; and a zero-voltage switched multi-resonant switch operatively connected between said input and output stages for switching the voltage passing through said multi-resonant switch, said voltage being quasi-sinusoidal and exhibiting smooth transition between the on and off states of said multi-resonant switch.
Claim 6
Dependent Claim
87 words
A multi-resonant converter for converting a Dc input signal from a supply to a DC output signal to be imposed across a load, said device comprising: input stage for receiving the DC input signal; an output stage for imposing said DC output signal across the load; and a zero-voltage switched multi-resonant switch operatively connected between said input and output stages for switching the voltage passing through said multi-resonant switch, said voltage being quasi-sinusoidal and exhibiting smooth transition between the on and off states of said multi-resonant switch.
Claim 7
Dependent Claim
68 words
The converter of claim 4, wherein said zero-voltage switched multi-resonant switch comprises: an active switch means for receiving said input signal from said input stage; a passive switch means operatively connected across said output stage; a resonant inductor in series with said active switch means; a first resonant capacitor in parallel with said active switch means; and a second resonant capacitor in parallel with said passive switch means.
Claim 8
Dependent Claim
18 words
The converter of claim 5, wherein said active switch means comprises a metal oxide semiconductor field effect transistor.
Claim 9
Dependent Claim
13 words
The device of claim 5, wherein said passive switch means is a diode.
Claim 10
Dependent Claim
84 words
A multi-resonant converter for converting a DC input signal from a supply to a DC output signal to be imposed across a load, said device comprising: an input stage for receiving the DC input signal; an output stage for imposing said DC output signal across the load; and a zero-current switched multi-resonant switch operatively connected between said input and output stages for switching the current passing through said multi-resonant switch to be quasi-sinusoidal and reduced to zero at the turn-off of said multi-resonant switch.
Claim 11
Dependent Claim
84 words
A multi-resonant converter for converting a DC input signal from a supply to a DC output signal to be imposed across a load, said device comprising: an input stage for receiving the DC input signal; an output stage for imposing said DC output signal across the load; and a zero-current switched multi-resonant switch operatively connected between said input and output stages for switching the current passing through said multi-resonant switch to be quasi-sinusoidal and reduced to zero at the turn-off of said multi-resonant switch.
Claim 12
Dependent Claim
74 words
The converter of claim 8, wherein said zero-voltage switched multi-resonant switch comprises: an active switch means for receiving said input signal from said input stage; a passive switch means operatively connected across said output stage; a first resonant inductor in series with said active switch means; a resonant capacitor in parallel with said serially arranged active switch means and first resonant inductor; and a second resonant inductor in series with said passive switch means.
Claim 13
Dependent Claim
18 words
The converter of claim 9, wherein said active switch means comprises a metal oxide semiconductor field effect transistor.
Claim 14
Dependent Claim
13 words
The converter of claim 9, wherein said passive switch means is a diode.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-19 | 1992-12-19 | 1993-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-19 | 1996-12-19 | 1997-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-19 | 2000-12-19 | 2001-06-20 | $7700.00 | Window Closed / Lapsed |