US20020075113A1 - Method and apparatus for transmitting a signal through a power magnetic structure - Google Patents
Method and apparatus for transmitting a signal through a power magnetic structure Download PDFInfo
- Publication number
- US20020075113A1 US20020075113A1 US09/740,314 US74031400A US2002075113A1 US 20020075113 A1 US20020075113 A1 US 20020075113A1 US 74031400 A US74031400 A US 74031400A US 2002075113 A1 US2002075113 A1 US 2002075113A1
- Authority
- US
- United States
- Prior art keywords
- winding
- power
- signal
- looped around
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 77
- 230000004907 flux Effects 0.000 claims abstract description 21
- 230000001939 inductive effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive loop type
-
- H04B5/263—
-
- H04B5/72—
-
- H04B5/79—
Definitions
- the present invention relates to a method and apparatus for transmitting a signal through a power magnetic structure, such as the power transformer in a DC-DC converter.
- the method and apparatus for transmitting a signal through a power magnetic structure of the present invention solves the aforementioned problems and meets the aforementioned needs by providing a power magnetic core having one or more windings for transmitting power, and two windings for transmitting a signal or auxiliary power.
- the signal or auxiliary power windings are looped around features of the core so as to cancel the effect of magnetic flux circulating in the core as a result of currents flowing through the one or more power windings.
- the magnetic core has at least two apertures defining a center portion between the apertures and two leg portions.
- the core has primary and secondary windings as is typical in the art. Magnetic flux produced in the core by the primary for linking the secondary circulates through one of the leg portions in either the right hand or left hand sense, and circulates through the other leg portion in the opposite sense.
- an input signal winding has a first portion looped around one of the leg portions so that an input signal current passed through the first winding will produce a magnetic flux in that leg portion that circulates in either the right hand or left hand sense.
- a second portion of the input signal winding is looped around the other leg portion in the opposite sense.
- an output signal winding has a first portion looped around one of the leg portions in either the right hand or left hand sense, and a second portion looped around the other leg portion in the opposite sense.
- a signal or power may be transmitted through power magnetic structure simultaneously with use of the magnetic structure as a component of a main power train.
- FIG. 1 is a pictorial view of a prior art power transformer.
- FIG. 2 is a pictorial schematic of the transformer of FIG. 1 showing the direction of magnetic lines of flux induced by current flowing through the primary of the transformer.
- FIG. 3 is a pictorial schematic of the transformer of FIG. 1 showing two input signal windings according to the present invention.
- FIG. 4 is a pictorial schematic of the assembly of FIG. 3 showing the lines of flux of FIG. 2.
- FIG. 5 is a pictorial schematic of the transformer of FIG. 1 or FIG. 3 showing two output signal windings according to the present invention.
- FIG. 6 is a pictorial schematic of an exemplary circuit employing a method and apparatus for transmitting a signal through a power magnetic structure according to the present invention.
- FIG. 7 is a pictorial block diagram of yet another exemplary circuit employing a method and apparatus for transmitting a signal through a power magnetic structure according to the present invention.
- an apparatus 10 for transmitting a signal through a power magnetic structure is typically a transformer having a core 13 comprising a center portion 14 and two leg portions 16 a and 16 b.
- the core 13 is formed of a material that is magnetically permeable relative to the air, such as ferrite.
- a primary winding 18 is looped around the center portion 14 of the core, and a secondary winding 20 is also looped around the center portion of the core, or around either or both of the leg portions 16 as is standard practice in the art.
- a “loop” for purposes herein may encircle the center portion or leg portion once, more than once, or less than once. For example, for low output voltage applications, a loop may be encircle the center portion or leg portion by a fractional turn.
- a result of looping the primary winding around the center portion of the core 13 is that lines of magnetic flux 21 circulate through one of the leg portions 16 a in either the right hand or left hand sense (either clockwise or counterclockwise as seen in FIG. 2 depending on the polarity of the current “i” flowing through the primary), and circulates through the other leg portion 16 b in the opposite sense.
- a right hand or left hand “sense” in connection with either a winding around or a flux path may be consistently defined as being in accordance with the well known right hand rule.
- the core 13 may also be employed for transmitting a signal wherein it is desired to isolate the output of the signal from the input of the signal. This provides the outstanding advantage of eliminating the expense and circuit complexity of providing a separate optocoupler, transformer or other isolation device.
- a first input signal winding portion 24 is looped around one of the leg portions 16 a so that an input signal current “i in ” passed through the first winding portion 24 will produce a magnetic flux 21 a in the leg portion 16 a that circulates in either the right or left hand sense, depending on the polarity of the input signal current.
- the input signal current passes through the first winding portion from a first terminal 24 a of the winding portion to a second terminal 24 b of the winding portion.
- a second input signal winding portion 26 is looped around the other leg portion 16 b and has a first terminal 26 a and a second terminal 26 b .
- the winding portion 26 is looped around the leg portion 16 b and the terminals 26 a, 26 b are connected to the terminals 24 a, 24 b so that the input signal current “i in ” passed through the second winding portion 26 will produce a magnetic flux 21 b in the leg portion 16 b that circulates in the same sense as the magnetic flux produced by the first winding portion.
- the magnetic flux 21 a is therefore the same as the magnetic flux 21 b.
- FIG. 4 a pair of output signal winding portions 28 , 30 are provided that are electrically isolated from the input winding portions 24 , 26 .
- the winding portions 28 and 30 are looped analogously to the winding portions 24 and 26 .
- the first output signal winding portion 28 is looped around one of the leg portions so that an output current “i out ” will flow through the winding portion 28 as a result of the magnetic flux 21 a in the leg portion 16 a.
- the output signal current passes through the first output signal winding portion 28 from a first terminal 28 a of the winding portion to a second terminal 28 b of the winding portion.
- a second output signal winding portion 30 is looped around the other leg portion 16 b and has a first terminal 30 a and a second terminal 30 b.
- the winding portion 30 is looped around the leg portion 16 b and the terminals 30 a, 30 b are connected to the terminals 28 a, 28 b so that the same output signal current “i out ” will flow through the second output signal winding portion 30 as a result of the magnetic flux 21 b in the leg portion 16 b.
- FIG. 6 an exemplary circuit employing the apparatus 10 as aforedescribed is shown.
- the circuit is part of a DC-DC converter wherein a switching signal V S is provided as input to a switching circuit 29 . It is desired to isolate V S from the input control signal V i , which in this example is derived by differentiating a square wave voltage source V. Shown are the primary winding 18 , the input signal winding portions 24 and 26 , and the output signal winding portions 28 and 30 .
- an input signal transmitted through the appararatus 10 may be modulated and the output signal demodulated to provide additional signal integrity.
- an outstanding advantage provided by the invention is the capability of electrically isolating an output signal from an input signal by utilizing an existing power transformer. Moreover, as has been shown, the invention provides for magnetically isolating the input and output signals from the input and output power that is transmitted by the transformer as well, so that the signals and the power can be transmitted without affecting each other.
- the primary winding may be used to transmit one of the signal input or output currents with a secondary winding (which has not been shown) being used to transmit the other signal current
- the signal input and output windings can be used as primary and secondary power train windings without departing from the principles of the invention, such as shown and described in the present inventor's companion application entitled TRANSFORMER PROVIDING LOW OUTPUT VOLTAGE, executed on even date herewith and incorporated herein by reference in its entirety.
- the preferred embodiment of the invention employs the core 13 for transmitting a signal through the input and output signal windings, these may be employed as another power train (primary and secondary) for transmitting power independently of the main power train as well.
- the magnetic flux through the leg portions of the core 13 is the superposition of the magnetic flux due to the primary and that due to the input signal winding.
- the total magnetic flux resulting from this superposition at any instant leads to magnetic core loss and, therefore, increased heat dissipation in the transformer which is generally undesirable.
- the additional core loss may be negligible.
Abstract
Description
- The present invention relates to a method and apparatus for transmitting a signal through a power magnetic structure, such as the power transformer in a DC-DC converter.
- In power circuitry, it is often required to isolate control signals as well as to isolate the output power from the input power. The power transformer that is found in many power circuits accomplishes the latter objective. However, isolating the control signals has generally required an additional isolation device, such as an optocoupler or a signal transformer, adding undesirable expense and complexity to the power circuit.
- Accordingly, there is a need for a method and apparatus for transmitting a signal through a power magnetic structure that provides for isolating control or other signals in power magnetic circuitry without the expense and complexity of employing an additional isolation device.
- The method and apparatus for transmitting a signal through a power magnetic structure of the present invention solves the aforementioned problems and meets the aforementioned needs by providing a power magnetic core having one or more windings for transmitting power, and two windings for transmitting a signal or auxiliary power. The signal or auxiliary power windings are looped around features of the core so as to cancel the effect of magnetic flux circulating in the core as a result of currents flowing through the one or more power windings.
- Preferably, the magnetic core has at least two apertures defining a center portion between the apertures and two leg portions. The core has primary and secondary windings as is typical in the art. Magnetic flux produced in the core by the primary for linking the secondary circulates through one of the leg portions in either the right hand or left hand sense, and circulates through the other leg portion in the opposite sense.
- To transmit a signal, an input signal winding has a first portion looped around one of the leg portions so that an input signal current passed through the first winding will produce a magnetic flux in that leg portion that circulates in either the right hand or left hand sense. A second portion of the input signal winding is looped around the other leg portion in the opposite sense.
- To provide an output, an output signal winding has a first portion looped around one of the leg portions in either the right hand or left hand sense, and a second portion looped around the other leg portion in the opposite sense. A signal or power may be transmitted through power magnetic structure simultaneously with use of the magnetic structure as a component of a main power train.
- Therefore, it is a principal object of the present invention to provide a novel method and apparatus for transmitting a signal through a power magnetic structure.
- It is another object of the present invention to provide a method and apparatus for transmitting a signal through a power magnetic structure that provides for isolating the output of the signal from the input of the signal.
- It is still another object of the present invention to provide such a method and apparatus for transmitting a signal through a power magnetic structure that provides for decreased cost.
- It is yet another object of the present invention to provide such a method and apparatus for transmitting a signal through a power magnetic structure that provides for decreased circuit complexity.
- The foregoing and other objects, features and advantages of the present invention will be more readily understood upon consideration of the following detailed description of the invention, taken in conjunction with the following drawings
- FIG. 1 is a pictorial view of a prior art power transformer.
- FIG. 2 is a pictorial schematic of the transformer of FIG. 1 showing the direction of magnetic lines of flux induced by current flowing through the primary of the transformer.
- FIG. 3 is a pictorial schematic of the transformer of FIG. 1 showing two input signal windings according to the present invention.
- FIG. 4 is a pictorial schematic of the assembly of FIG. 3 showing the lines of flux of FIG. 2.
- FIG. 5 is a pictorial schematic of the transformer of FIG. 1 or FIG. 3 showing two output signal windings according to the present invention.
- FIG. 6 is a pictorial schematic of an exemplary circuit employing a method and apparatus for transmitting a signal through a power magnetic structure according to the present invention.
- FIG. 7 is a pictorial block diagram of yet another exemplary circuit employing a method and apparatus for transmitting a signal through a power magnetic structure according to the present invention.
- Referring to FIG. 1, an
apparatus 10 for transmitting a signal through a power magnetic structure according to the present invention. The power magnetic structure is typically a transformer having acore 13 comprising acenter portion 14 and twoleg portions core 13 is formed of a material that is magnetically permeable relative to the air, such as ferrite. - To transmit power, a
primary winding 18 is looped around thecenter portion 14 of the core, and asecondary winding 20 is also looped around the center portion of the core, or around either or both of theleg portions 16 as is standard practice in the art. A “loop” for purposes herein may encircle the center portion or leg portion once, more than once, or less than once. For example, for low output voltage applications, a loop may be encircle the center portion or leg portion by a fractional turn. - Referring to FIG. 2, a result of looping the primary winding around the center portion of the
core 13 is that lines ofmagnetic flux 21 circulate through one of theleg portions 16 a in either the right hand or left hand sense (either clockwise or counterclockwise as seen in FIG. 2 depending on the polarity of the current “i” flowing through the primary), and circulates through theother leg portion 16 b in the opposite sense. For purposes herein, a right hand or left hand “sense” in connection with either a winding around or a flux path may be consistently defined as being in accordance with the well known right hand rule. - According to the invention, the
core 13 may also be employed for transmitting a signal wherein it is desired to isolate the output of the signal from the input of the signal. This provides the outstanding advantage of eliminating the expense and circuit complexity of providing a separate optocoupler, transformer or other isolation device. - For this purpose, two additional windings are provided. Referring to FIG. 3 illustrating two portions of an input signal winding, a first input
signal winding portion 24 is looped around one of theleg portions 16 a so that an input signal current “iin” passed through thefirst winding portion 24 will produce amagnetic flux 21 a in theleg portion 16 a that circulates in either the right or left hand sense, depending on the polarity of the input signal current. The input signal current passes through the first winding portion from afirst terminal 24 a of the winding portion to asecond terminal 24 b of the winding portion. - A second input
signal winding portion 26 is looped around theother leg portion 16 b and has a first terminal 26 a and a second terminal 26 b. Thewinding portion 26 is looped around theleg portion 16 b and the terminals 26 a, 26 b are connected to theterminals second winding portion 26 will produce a magnetic flux 21 b in theleg portion 16 b that circulates in the same sense as the magnetic flux produced by the first winding portion. Themagnetic flux 21 a is therefore the same as the magnetic flux 21 b. - Turning to FIG. 4, according to the invention a pair of output
signal winding portions input winding portions winding portions winding portions signal winding portion 28 is looped around one of the leg portions so that an output current “iout” will flow through thewinding portion 28 as a result of themagnetic flux 21 a in theleg portion 16 a. The output signal current passes through the first outputsignal winding portion 28 from a first terminal 28 a of the winding portion to a second terminal 28 b of the winding portion. - A second output
signal winding portion 30 is looped around theother leg portion 16 b and has a first terminal 30 a and asecond terminal 30 b. The windingportion 30 is looped around theleg portion 16 b and theterminals 30 a, 30 b are connected to the terminals 28 a, 28 b so that the same output signal current “iout” will flow through the second outputsignal winding portion 30 as a result of the magnetic flux 21 b in theleg portion 16 b. - Referring to FIG. 5, lines of
magnetic flux 21 induced by power current “ipower” flowing through theprimary winding 18 links thewinding portions terminals 28 b and 30 b that is induced by power transmission will be zero Accordingly, the output signal current is unaffected by the power input Similarly, currents produced in theinput winding portions - Turning now to FIG. 6, an exemplary circuit employing the
apparatus 10 as aforedescribed is shown. The circuit is part of a DC-DC converter wherein a switching signal VS is provided as input to aswitching circuit 29. It is desired to isolate VS from the input control signal Vi, which in this example is derived by differentiating a square wave voltage source V. Shown are theprimary winding 18, the inputsignal winding portions signal winding portions - Referring to FIG. 7, an input signal transmitted through the
appararatus 10 may be modulated and the output signal demodulated to provide additional signal integrity. - As mentioned, an outstanding advantage provided by the invention is the capability of electrically isolating an output signal from an input signal by utilizing an existing power transformer. Moreover, as has been shown, the invention provides for magnetically isolating the input and output signals from the input and output power that is transmitted by the transformer as well, so that the signals and the power can be transmitted without affecting each other. Further, the primary winding may be used to transmit one of the signal input or output currents with a secondary winding (which has not been shown) being used to transmit the other signal current, while the signal input and output windings can be used as primary and secondary power train windings without departing from the principles of the invention, such as shown and described in the present inventor's companion application entitled TRANSFORMER PROVIDING LOW OUTPUT VOLTAGE, executed on even date herewith and incorporated herein by reference in its entirety.
- Although the preferred embodiment of the invention employs the
core 13 for transmitting a signal through the input and output signal windings, these may be employed as another power train (primary and secondary) for transmitting power independently of the main power train as well. In this regard, it may be noted that the magnetic flux through the leg portions of thecore 13 is the superposition of the magnetic flux due to the primary and that due to the input signal winding. However, the total magnetic flux resulting from this superposition at any instant leads to magnetic core loss and, therefore, increased heat dissipation in the transformer which is generally undesirable. Where the input signal winding transmits is used to transmit relatively low power compared to the primary winding, the additional core loss may be negligible. On the other hand, where it is desired to transmit appreciable power through the input signal winding, this additional loss may be unacceptable. Then, the frequency and phase of either or both the currents flowing through the primary and input signal windings may be adjusted to minimize this loss as will now be readily apparent to those having ordinary skill. - It is to be recognized that, while a particular method and apparatus for transmitting a signal through a power magnetic structure has been shown and described as preferred, other configurations and methods could be utilized, in addition to those already mentioned, without departing from the principles of the invention.
- The terms and expressions which have been employed in the foregoing specification are used therein as terms of description and not of limitation, and there is no intention of the use of such terms and expressions of excluding equivalents of the features shown and described or portions thereof, it being recognized that the scope of the invention is defined and limited only by the claims which follow.
Claims (6)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/740,314 US6414578B1 (en) | 2000-12-18 | 2000-12-18 | Method and apparatus for transmitting a signal through a power magnetic structure |
EP01271703A EP1348260B1 (en) | 2000-12-18 | 2001-12-17 | Method and apparatus for transmitting a signal through a power magnetic structure |
DE60109205T DE60109205T2 (en) | 2000-12-18 | 2001-12-17 | METHOD AND DEVICE FOR TRANSMITTING A SIGNAL THROUGH A POWER MAGNETIC STRUCTURE |
AU2002220432A AU2002220432A1 (en) | 2000-12-18 | 2001-12-17 | Method and apparatus for transmitting a signal through a power magnetic structure |
PCT/CH2001/000721 WO2002051026A2 (en) | 2000-12-18 | 2001-12-17 | Method and apparatus for transmitting a signal through a power magnetic structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/740,314 US6414578B1 (en) | 2000-12-18 | 2000-12-18 | Method and apparatus for transmitting a signal through a power magnetic structure |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020075113A1 true US20020075113A1 (en) | 2002-06-20 |
US6414578B1 US6414578B1 (en) | 2002-07-02 |
Family
ID=24975971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/740,314 Expired - Lifetime US6414578B1 (en) | 2000-12-18 | 2000-12-18 | Method and apparatus for transmitting a signal through a power magnetic structure |
Country Status (5)
Country | Link |
---|---|
US (1) | US6414578B1 (en) |
EP (1) | EP1348260B1 (en) |
AU (1) | AU2002220432A1 (en) |
DE (1) | DE60109205T2 (en) |
WO (1) | WO2002051026A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080265858A1 (en) * | 2007-04-25 | 2008-10-30 | Texas Instruments Incorporated | Inductive element for a multi-phase interleaved power supply and apparatus and method using the same |
WO2013003483A1 (en) * | 2011-06-27 | 2013-01-03 | Onyxip, Inc. | Magnetic power converter |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030019349A (en) * | 2000-04-14 | 2003-03-06 | 커런트 테크놀로지스, 엘엘씨 | Digital communication utilizing medium voltage power distribution lines |
US7103240B2 (en) * | 2001-02-14 | 2006-09-05 | Current Technologies, Llc | Method and apparatus for providing inductive coupling and decoupling of high-frequency, high-bandwidth data signals directly on and off of a high voltage power line |
US6998962B2 (en) | 2000-04-14 | 2006-02-14 | Current Technologies, Llc | Power line communication apparatus and method of using the same |
US7280026B2 (en) * | 2002-04-18 | 2007-10-09 | Coldwatt, Inc. | Extended E matrix integrated magnetics (MIM) core |
EP1391900A1 (en) * | 2002-08-22 | 2004-02-25 | Abb Research Ltd. | Signal transformer as well as method of operation of such a signal transformer |
US7427910B2 (en) * | 2004-08-19 | 2008-09-23 | Coldwatt, Inc. | Winding structure for efficient switch-mode power converters |
US7321283B2 (en) * | 2004-08-19 | 2008-01-22 | Coldwatt, Inc. | Vertical winding structures for planar magnetic switched-mode power converters |
US7417875B2 (en) * | 2005-02-08 | 2008-08-26 | Coldwatt, Inc. | Power converter employing integrated magnetics with a current multiplier rectifier and method of operating the same |
US7385375B2 (en) * | 2005-02-23 | 2008-06-10 | Coldwatt, Inc. | Control circuit for a depletion mode switch and method of operating the same |
US7176662B2 (en) * | 2005-02-23 | 2007-02-13 | Coldwatt, Inc. | Power converter employing a tapped inductor and integrated magnetics and method of operating the same |
US7876191B2 (en) | 2005-02-23 | 2011-01-25 | Flextronics International Usa, Inc. | Power converter employing a tapped inductor and integrated magnetics and method of operating the same |
EP1958218A2 (en) * | 2005-12-02 | 2008-08-20 | Koninklijke Philips Electronics N.V. | Coupling system |
US8595041B2 (en) * | 2006-02-07 | 2013-11-26 | Sap Ag | Task responsibility system |
US8125205B2 (en) | 2006-08-31 | 2012-02-28 | Flextronics International Usa, Inc. | Power converter employing regulators with a coupled inductor |
US9197132B2 (en) | 2006-12-01 | 2015-11-24 | Flextronics International Usa, Inc. | Power converter with an adaptive controller and method of operating the same |
US7667986B2 (en) | 2006-12-01 | 2010-02-23 | Flextronics International Usa, Inc. | Power system with power converters having an adaptive controller |
US7675759B2 (en) | 2006-12-01 | 2010-03-09 | Flextronics International Usa, Inc. | Power system with power converters having an adaptive controller |
US7675758B2 (en) * | 2006-12-01 | 2010-03-09 | Flextronics International Usa, Inc. | Power converter with an adaptive controller and method of operating the same |
US7889517B2 (en) | 2006-12-01 | 2011-02-15 | Flextronics International Usa, Inc. | Power system with power converters having an adaptive controller |
US7468649B2 (en) | 2007-03-14 | 2008-12-23 | Flextronics International Usa, Inc. | Isolated power converter |
US7906941B2 (en) | 2007-06-19 | 2011-03-15 | Flextronics International Usa, Inc. | System and method for estimating input power for a power processing circuit |
CN102342007B (en) | 2009-01-19 | 2015-01-07 | 伟创力国际美国公司 | Controller for a power converter |
US9088216B2 (en) | 2009-01-19 | 2015-07-21 | Power Systems Technologies, Ltd. | Controller for a synchronous rectifier switch |
US9019061B2 (en) | 2009-03-31 | 2015-04-28 | Power Systems Technologies, Ltd. | Magnetic device formed with U-shaped core pieces and power converter employing the same |
US9077248B2 (en) | 2009-06-17 | 2015-07-07 | Power Systems Technologies Ltd | Start-up circuit for a power adapter |
US8514593B2 (en) | 2009-06-17 | 2013-08-20 | Power Systems Technologies, Ltd. | Power converter employing a variable switching frequency and a magnetic device with a non-uniform gap |
US8643222B2 (en) | 2009-06-17 | 2014-02-04 | Power Systems Technologies Ltd | Power adapter employing a power reducer |
US8638578B2 (en) | 2009-08-14 | 2014-01-28 | Power System Technologies, Ltd. | Power converter including a charge pump employable in a power adapter |
US8976549B2 (en) | 2009-12-03 | 2015-03-10 | Power Systems Technologies, Ltd. | Startup circuit including first and second Schmitt triggers and power converter employing the same |
US8520420B2 (en) | 2009-12-18 | 2013-08-27 | Power Systems Technologies, Ltd. | Controller for modifying dead time between switches in a power converter |
US9246391B2 (en) | 2010-01-22 | 2016-01-26 | Power Systems Technologies Ltd. | Controller for providing a corrected signal to a sensed peak current through a circuit element of a power converter |
US8787043B2 (en) | 2010-01-22 | 2014-07-22 | Power Systems Technologies, Ltd. | Controller for a power converter and method of operating the same |
US8767418B2 (en) | 2010-03-17 | 2014-07-01 | Power Systems Technologies Ltd. | Control system for a power converter and method of operating the same |
US8792257B2 (en) | 2011-03-25 | 2014-07-29 | Power Systems Technologies, Ltd. | Power converter with reduced power dissipation |
US8792256B2 (en) | 2012-01-27 | 2014-07-29 | Power Systems Technologies Ltd. | Controller for a switch and method of operating the same |
US9190898B2 (en) | 2012-07-06 | 2015-11-17 | Power Systems Technologies, Ltd | Controller for a power converter and method of operating the same |
US9106130B2 (en) | 2012-07-16 | 2015-08-11 | Power Systems Technologies, Inc. | Magnetic device and power converter employing the same |
US9379629B2 (en) | 2012-07-16 | 2016-06-28 | Power Systems Technologies, Ltd. | Magnetic device and power converter employing the same |
US9099232B2 (en) | 2012-07-16 | 2015-08-04 | Power Systems Technologies Ltd. | Magnetic device and power converter employing the same |
US9214264B2 (en) | 2012-07-16 | 2015-12-15 | Power Systems Technologies, Ltd. | Magnetic device and power converter employing the same |
US9240712B2 (en) | 2012-12-13 | 2016-01-19 | Power Systems Technologies Ltd. | Controller including a common current-sense device for power switches of a power converter |
US20140266535A1 (en) * | 2013-03-14 | 2014-09-18 | Hiq Solar, Inc. | Low loss inductor with offset gap and windings |
US9300206B2 (en) | 2013-11-15 | 2016-03-29 | Power Systems Technologies Ltd. | Method for estimating power of a power converter |
JP6734328B2 (en) * | 2018-08-06 | 2020-08-05 | 株式会社京三製作所 | Reactor |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA868033A (en) * | 1969-11-07 | 1971-04-06 | Lindsay Specialty Products Limited | Directional communication signal tap |
US3710135A (en) * | 1971-01-15 | 1973-01-09 | Technical Management Services | Alternating and direct current transformer using harmonic modulator |
US4422056A (en) * | 1981-09-28 | 1983-12-20 | General Electric Company | Integrated multi-stage electrical filter |
DE3311535A1 (en) * | 1983-03-30 | 1984-10-04 | Hartmann & Braun Ag, 6000 Frankfurt | Circuit arrangement for transmission and DC-isolation of analog DC signals |
US4994952A (en) * | 1988-02-10 | 1991-02-19 | Electronics Research Group, Inc. | Low-noise switching power supply having variable reluctance transformer |
ATE135835T1 (en) * | 1990-07-16 | 1996-04-15 | Siemens Ag | DEVICE FOR CONTACTLESS DATA AND ENERGY TRANSMISSION AND USE OF SUCH |
US5783984A (en) * | 1995-06-16 | 1998-07-21 | Hughes Electronics | Method and means for combining a transformer and inductor on a single core structure |
-
2000
- 2000-12-18 US US09/740,314 patent/US6414578B1/en not_active Expired - Lifetime
-
2001
- 2001-12-17 AU AU2002220432A patent/AU2002220432A1/en not_active Abandoned
- 2001-12-17 EP EP01271703A patent/EP1348260B1/en not_active Expired - Lifetime
- 2001-12-17 WO PCT/CH2001/000721 patent/WO2002051026A2/en not_active Application Discontinuation
- 2001-12-17 DE DE60109205T patent/DE60109205T2/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080265858A1 (en) * | 2007-04-25 | 2008-10-30 | Texas Instruments Incorporated | Inductive element for a multi-phase interleaved power supply and apparatus and method using the same |
US7667441B2 (en) * | 2007-04-25 | 2010-02-23 | Texas Instruments Incorporated | Inductive element for a multi-phase interleaved power supply and apparatus and method using the same |
WO2013003483A1 (en) * | 2011-06-27 | 2013-01-03 | Onyxip, Inc. | Magnetic power converter |
US8416045B2 (en) | 2011-06-27 | 2013-04-09 | Onyxip, Inc. | Magnetic power converter |
Also Published As
Publication number | Publication date |
---|---|
WO2002051026A3 (en) | 2002-09-12 |
AU2002220432A1 (en) | 2002-07-01 |
US6414578B1 (en) | 2002-07-02 |
DE60109205D1 (en) | 2005-04-07 |
WO2002051026A2 (en) | 2002-06-27 |
EP1348260B1 (en) | 2005-03-02 |
DE60109205T2 (en) | 2006-02-16 |
EP1348260A2 (en) | 2003-10-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6414578B1 (en) | Method and apparatus for transmitting a signal through a power magnetic structure | |
US5568047A (en) | Current sensor and method using differentially generated feedback | |
US5783984A (en) | Method and means for combining a transformer and inductor on a single core structure | |
US4467293A (en) | Ferrite type directional coupler | |
US4951312A (en) | Balanced transmission device | |
EP0098066B1 (en) | A data transmission system | |
US4172244A (en) | High voltage resistant signal transmission device with isolating transformer | |
EP1344231A1 (en) | Transformer providing low output voltage | |
EP0676862B1 (en) | Direct-current impressing circuit | |
JPH07506180A (en) | Electronic device for multiplexing multiple loads excited by alternating current | |
JPH03165428A (en) | Display device | |
US4172215A (en) | Transformer coupling circuit providing for cancellation of D.C. fluxes | |
JPH07297035A (en) | Noise removal unit and transmission system using that unit | |
GB2115613A (en) | Combiner network | |
JPH0335623A (en) | Carrier signal coupling circuit for distribution line | |
RU94035585A (en) | Matrix transformer | |
SU623675A2 (en) | Rectifier | |
SU1432723A1 (en) | Frequency converter | |
JPH03296313A (en) | Single phase three wire blocking filter for power line carrier communication | |
JPS6134779Y2 (en) | ||
JPH03278410A (en) | Winding system of common mode choke coil | |
JPH0263310A (en) | Device eliminating induced voltage due to undesired electromagnetic field introduced to terminal equipment | |
JPS58201576A (en) | Noise insulating system for dc power source | |
JP2566359Y2 (en) | Variable coupling degree coupler | |
JPH0426068B2 (en) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ROMPOWER, INCORPORATED, ARIZONA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JITARU, IONEL;REEL/FRAME:011385/0435 Effective date: 20001218 |
|
AS | Assignment |
Owner name: ASCOM ENERGY SYSTEMS AG, SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ROMPOWER INC.;REEL/FRAME:011700/0932 Effective date: 20010202 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: DELTA ENERGY SYSTEMS ( SWITZERLAND) AG, SWITZERLAN Free format text: CHANGE OF NAME;ASSIGNOR:ASCOM ENERGY SYSTEMS AG;REEL/FRAME:015156/0889 Effective date: 20031209 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
AS | Assignment |
Owner name: DET INTERNATIONAL HOLDING LIMITED, CAYMAN ISLANDS Free format text: CONFIRMATORY LICENSE;ASSIGNOR:DELTA ENERGY SYSTEMS (SWITZERLAND) AG;REEL/FRAME:019084/0751 Effective date: 20070212 |
|
FEPP | Fee payment procedure |
Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
FPAY | Fee payment |
Year of fee payment: 12 |