Patent EP0289196A2 successfully refreshed from Google Patents.
EP0289196A2
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EP
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High frequency resonant power converter
Assignee: AT&T Inc
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Filing: 1988-04-19
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Granted: —
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Expires: 2008-04-19
Abstract
Abstract A high frequency DC to DC converter (FIG. 1) having at least two phase differentiated pulsed voltage sources, utilizes two phase differentiated unidirectional power flow resonant circuits to permit multiple quasi resonant operation of the converter.
Inventors
- 👤 John Delfino Garcia Ii
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 09:31
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/42; H02M1/44; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/337; H02M3/3376; Y; Y02; Y02B; Y02B70/00; Y02B70/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
185 words
A power converter comprising: input means for accepting a DC voltage source, a power transformer including a primary winding and a secondary winding; a first switch for applying the voltage source to the primary winding in a first direction; a second switch for applying the DC voltage source to the primary winding in a second direction opposite the first direction; characterized by: a first secondary resonant circuit connected to a first terminal of the secondary winding and including, a first inductance derived in part from a leakage inductance of the transformer, a first rectifying diode and a first capacitance access port; a second secondary resonant circuit connected to a second terminal of the secondary winding and including, a second inductance derived in part from a leakage inductance of the transformer, a second rectifying diode and a second capacitance access port; a resonating capacitor connecting the first and second capacitance access port and having resonant operation with both the first and second resonant circuits; and output means connected to the resonating capacitor, having constant current sink characteristics and adopted for accepting a load to be energized.
Claim 2
Dependent Claim
185 words
A power converter comprising: input means for accepting a DC voltage source, a power transformer including a primary winding and a secondary winding; a first switch for applying the voltage source to the primary winding in a first direction; a second switch for applying the DC voltage source to the primary winding in a second direction opposite the first direction; characterized by: a first secondary resonant circuit connected to a first terminal of the secondary winding and including, a first inductance derived in part from a leakage inductance of the transformer, a first rectifying diode and a first capacitance access port; a second secondary resonant circuit connected to a second terminal of the secondary winding and including, a second inductance derived in part from a leakage inductance of the transformer, a second rectifying diode and a second capacitance access port; a resonating capacitor connecting the first and second capacitance access port and having resonant operation with both the first and second resonant circuits; and output means connected to the resonating capacitor, having constant current sink characteristics and adopted for accepting a load to be energized.
Claim 3
Dependent Claim
57 words
A power converter as defined in claim 1 and further characterized wherein the first and second switch connect a first node of the input means to opposite terminals of the primary winding respectively and a second node of the input means connected to a node of the primary winding intermediate the opposite terminals of the primary winding.
Claim 4
Dependent Claim
35 words
A power converter as defined in claim 1 and further characterized wherein the first and second switch are connected in a series connection and the series correction being connected in shunt with the input means.
Claim 5
Dependent Claim
56 words
A power converter as defined in claim 1 and further characterized in that the first and second switches are connected in a bridge configuration with a third switch connected in the bridge configuration operating in accord with the first switch and a fourth switch connected in the bridge configuration operating in accord with the second switch.
Claim 6
Dependent Claim
95 words
A power converter as defined in claim 1 and further characterized by including regulation control circuitry, comprising: means for sensing an output signal of the load means responsive to the means for sensing for generating an error signal responsive to a deviation of the output signal from a predetermined regulation value, and means for converting the error signal into a frequency, and means responsive to the frequency to generate a driver signal having a fixed interval value and a variable period, and means for alternately applying the drive signal to the first and second switches.
References Cited (Backward Citations)
No citation records indexed.
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