Patents by Inventor Arian Jansen
Arian Jansen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9204575Abstract: An electronic device such as an AC/DC power adapter includes a conductive heat dissipation system. The device contains heat generating components and is powered via power supply leads by an external power supply circuit. The device further contains a thermally conductive mass that is thermally coupled to both the heat generating components and to the power supply leads. When the power supply leads are coupled to receive electricity from the external power supply circuit, heat generated by the device is thermally conducted into the external power supply circuit via the power supply leads.Type: GrantFiled: August 30, 2012Date of Patent: December 1, 2015Assignee: Flextronics AP, LLCInventors: Bahman Sharifipour, Arian Jansen
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Publication number: 20130016476Abstract: An electronic device such as an AC/DC power adapter includes a conductive heat dissipation system. The device contains heat generating components and is powered via power supply leads by an external power supply circuit. The device further contains a thermally conductive mass that is thermally coupled to both the heat generating components and to the power supply leads. When the power supply leads are coupled to receive electricity from the external power supply circuit, heat generated by the device is thermally conducted into the external power supply circuit via the power supply leads.Type: ApplicationFiled: August 30, 2012Publication date: January 17, 2013Applicant: Flextronics AP, LLCInventors: Bahman Sharifipour, Arian Jansen
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Patent number: 8295048Abstract: An electronic device such as an AC/DC power adapter includes a conductive heat dissipation system. The device contains heat generating components and is powered via power supply leads by an external power supply circuit. The device further contains a thermally conductive mass that is thermally coupled to both the heat generating components and to the power supply leads. When the power supply leads are coupled to receive electricity from the external power supply circuit, heat generated by the device is thermally conducted into the external power supply circuit via the power supply leads.Type: GrantFiled: December 20, 2010Date of Patent: October 23, 2012Assignee: Flextronics AP, LLCInventors: Bahman Sharifipour, Arian Jansen
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Publication number: 20110103119Abstract: An electronic device such as an AC/DC power adapter includes a conductive heat dissipation system. The device contains heat generating components and is powered via power supply leads by an external power supply circuit. The device further contains a thermally conductive mass that is thermally coupled to both the heat generating components and to the power supply leads. When the power supply leads are coupled to receive electricity from the external power supply circuit, heat generated by the device is thermally conducted into the external power supply circuit via the power supply leads.Type: ApplicationFiled: December 20, 2010Publication date: May 5, 2011Applicant: FLEXTRONICS AP, LLCInventors: Bahman Sharifipour, Arian Jansen
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Patent number: 7924577Abstract: A power converter includes a transformer, a primary switch, an auxiliary switch, first and second resonance capacitors, and a secondary side rectification means. A switch mode power supply is formed to use reflected voltage and parasitic capacitance as an energy source for a transformer resonance. The auxiliary switch effectively exchanges energy between the primary inductance of the transformer and the first and second resonant capacitors. The auxiliary switch effectively switches the transformer resonance between two distinct frequencies. In one embodiment of the invention, the power converter can be, but is not limited to, a flyback converter and further includes a comparator and a driver. The comparator is for detecting the voltage across the second resonance capacitor and the driver is configured to drive the auxiliary switch based on the output state of the comparator. The resonant nature of the converter provides zero voltage (ZVS) for the primary switch as well as for the auxiliary switch.Type: GrantFiled: November 17, 2009Date of Patent: April 12, 2011Assignee: Flextronics AP, LLCInventors: Arian Jansen, Mark Telefus, Bahman Sharifipour
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Patent number: 7924578Abstract: A power converter includes a transformer, a primary switch, an auxiliary switch, first and second resonance capacitors, and a secondary side rectification means. A switch mode power supply is formed to use reflected voltage and parasitic capacitance as an energy source for a transformer resonance. The auxiliary switch effectively exchanges energy between the primary inductance of the transformer and the first and second resonant capacitors. The auxiliary switch effectively switches the transformer resonance between two distinct frequencies. In one embodiment of the invention, the power converter can be, but is not limited to, a flyback converter and further includes a comparator and a driver. The comparator is for detecting the voltage across the second resonance capacitor and the driver is configured to drive the auxiliary switch based on the output state of the comparator. The resonant nature of the converter provides zero voltage (ZVS) for the primary switch as well as for the auxiliary switch.Type: GrantFiled: November 17, 2009Date of Patent: April 12, 2011Assignee: Flextronics AP, LLCInventors: Arian Jansen, Mark Telefus, Bahman Sharifipour
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Patent number: 7885076Abstract: An electronic device such as an AC/DC power adapter includes a conductive heat dissipation system. The device contains heat generating components and is powered via power supply leads by an external power supply circuit. The device further contains a thermally conductive mass that is thermally coupled to both the heat generating components and to the power supply leads. When the power supply leads are coupled to receive electricity from the external power supply circuit, heat generated by the device is thermally conducted into the external power supply circuit via the power supply leads.Type: GrantFiled: September 6, 2005Date of Patent: February 8, 2011Assignee: Flextronics AP, LLCInventors: Bahman Sharifipour, Arian Jansen
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Publication number: 20100280676Abstract: Connecting a load device to a power supply is described. A connection to a load device is detected on a communication link, where the load device is in a first power state. In response to detecting the connection to the load device, a bias power source is enabled to supply bias power on the communication link to the load device. Power information of the load device is received over the communication link. Power is supplied to the load device, based on the power information, to place the load device in a second power state.Type: ApplicationFiled: April 30, 2010Publication date: November 4, 2010Inventors: Gus Charles PABON, Kevin David Jones, Chia Yin Ko, George Lagui, Parag Mody, Mark Edward Walsh, Huijie Yu, Bogdan Tudor Bucheru, Arian Jansen
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Patent number: 7764515Abstract: A power converter includes a transformer, a primary switch, an auxiliary switch, first and second resonance capacitors, and a secondary side rectification means. A switch mode power supply is formed to use reflected voltage and parasitic capacitance as an energy source for a transformer resonance. The auxiliary switch effectively exchanges energy between the primary inductance of the transformer and the first and second resonant capacitors. The auxiliary switch effectively switches the transformer resonance between two distinct frequencies. In one embodiment of the invention, the power converter can be, but is not limited to, a flyback converter and further includes a comparator and a driver. The comparator is for detecting the voltage across the second resonance capacitor and the driver is configured to drive the auxiliary switch based on the output state of the comparator. The resonant nature of the converter provides zero voltage (ZVS) for the primary switch as well as for the auxiliary switch.Type: GrantFiled: February 14, 2007Date of Patent: July 27, 2010Assignee: Flextronics AP, LLCInventors: Arian Jansen, Mark Telefus, Bahmar Sharifipour
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Publication number: 20100067276Abstract: A power converter includes a transformer, a primary switch, an auxiliary switch, first and second resonance capacitors, and a secondary side rectification means. A switch mode power supply is formed to use reflected voltage and parasitic capacitance as an energy source for a transformer resonance. The auxiliary switch effectively exchanges energy between the primary inductance of the transformer and the first and second resonant capacitors. The auxiliary switch effectively switches the transformer resonance between two distinct frequencies. In one embodiment of the invention, the power converter can be, but is not limited to, a flyback converter and further includes a comparator and a driver. The comparator is for detecting the voltage across the second resonance capacitor and the driver is configured to drive the auxiliary switch based on the output state of the comparator. The resonant nature of the converter provides zero voltage (ZVS) for the primary switch as well as for the auxiliary switch.Type: ApplicationFiled: November 17, 2009Publication date: March 18, 2010Applicant: FLEXTRONICS AP, LLCInventors: Arian Jansen, Mark Telefus, Bahman Sharifipour
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Publication number: 20100061123Abstract: A power converter includes a transformer, a primary switch, an auxiliary switch, first and second resonance capacitors, and a secondary side rectification means. A switch mode power supply is formed to use reflected voltage and parasitic capacitance as an energy source for a transformer resonance. The auxiliary switch effectively exchanges energy between the primary inductance of the transformer and the first and second resonant capacitors. The auxiliary switch effectively switches the transformer resonance between two distinct frequencies. In one embodiment of the invention, the power converter can be, but is not limited to, a flyback converter and further includes a comparator and a driver. The comparator is for detecting the voltage across the second resonance capacitor and the driver is configured to drive the auxiliary switch based on the output state of the comparator. The resonant nature of the converter provides zero voltage (ZVS) for the primary switch as well as for the auxiliary switch.Type: ApplicationFiled: November 17, 2009Publication date: March 11, 2010Applicant: Flextronics AP, LLCInventors: Arian Jansen, Mark Telefus, Bahman Sharifipour
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Publication number: 20070263415Abstract: A power converter includes a transformer, a primary switch, an auxiliary switch, first and second resonance capacitors, and a secondary side rectification means. A switch mode power supply is formed to use reflected voltage and parasitic capacitance as an energy source for a transformer resonance. The auxiliary switch effectively exchanges energy between the primary inductance of the transformer and the first and second resonant capacitors. The auxiliary switch effectively switches the transformer resonance between two distinct frequencies. In one embodiment of the invention, the power converter can be, but is not limited to, a flyback converter and further includes a comparator and a driver. The comparator is for detecting the voltage across the second resonance capacitor and the driver is configured to drive the auxiliary switch based on the output state of the comparator. The resonant nature of the converter provides zero voltage (ZVS) for the primary switch as well as for the auxiliary switch.Type: ApplicationFiled: February 14, 2007Publication date: November 15, 2007Inventors: Arian Jansen, Mark Telefus, Bahmar Sharifipour
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Patent number: 7205752Abstract: A system and a method for to use multiple power sources for supplying power to a load. The system and method use a triggering system to automatically and substantially cancel a ripple component of the input current drawn by the system. A master power source and a slave power source supply power to the load. The triggering system results in the two power sources having switching frequencies that are substantially equal and switching cycles that are substantially 180° out of phase. Further, the method and the device contemplate the use of a local oscillator in the triggering system to ensure that the slave power source is triggered to the on position at a point in the switching cycle of the master power source that is approximately 180° out of phase with a leading edge of the master switching drive signal. The system and method are advantageously used to provide a power factor correction front-end for a switch-mode power supply.Type: GrantFiled: September 6, 2005Date of Patent: April 17, 2007Assignee: Flextronics AP, LLCInventor: Arian Jansen
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Publication number: 20060077604Abstract: A system and a method for to use multiple power sources for supplying power to a load. The system and method use a triggering system to automatically and substantially cancel a ripple component of the input current drawn by the system. A master power source and a slave power source supply power to the load. The triggering system results in the two power sources having switching frequencies that are substantially equal and switching cycles that are substantially 180° out of phase. Further, the method and the device contemplate the use of a local oscillator in the triggering system to ensure that the slave power source is triggered to the on position at a point in the switching cycle of the master power source that is approximately 180° out of phase with a leading edge of the master switching drive signal. The system and method are advantageously used to provide a power factor correction front-end for a switch-mode power supply.Type: ApplicationFiled: September 6, 2005Publication date: April 13, 2006Inventor: Arian Jansen
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Publication number: 20060076124Abstract: An electronic device such as an AC/DC power adapter includes a conductive heat dissipation system. The device contains heat generating components and is powered via power supply leads by an external power supply circuit. The device further contains a thermally conductive mass that is thermally coupled to both the heat generating components and to the power supply leads. When the power supply leads are coupled to receive electricity from the external power supply circuit, heat generated by the device is thermally conducted into the external power supply circuit via the power supply leads.Type: ApplicationFiled: September 6, 2005Publication date: April 13, 2006Inventors: Bahman Sharifipour, Arian Jansen
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Patent number: 6671189Abstract: A power converter having a transformer with a primary side winding and a secondary side winding, each having a switch. When the primary master switch is switched on, the transformer charges. When it is switched off, the intrinsic capacitance of the secondary slave switch discharges generating the zero voltage switching condition for the secondary slave switch. The secondary slave switch is switched on at a time determined in accordance with the waveform generated by the transformer. When the secondary slave switch is switched on, the transformer discharges and ultimately the charge from an output capacitor flows into the transformer as a backflow which charges the transformer. The secondary slave switch is switched off at a time determined in accordance with a current flowing through said secondary switch. The intrinsic capacitance of primary master switch discharges generating the zero voltage switching condition for primary master switch which is then switched on.Type: GrantFiled: May 3, 2002Date of Patent: December 30, 2003Assignee: Minebea Co., Ltd.Inventors: Arian Jansen, Xiaoyang Zhang
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Publication number: 20030090914Abstract: The invention is a power converter having a transformer with a primary side winding and a secondary side winding. Both the primary side and the secondary side have switches which are switched on and off alternately. When the primary master switch is switched on, the transformer charges. When the primary master switch is switched off, the intrinsic capacitance of the secondary slave switch discharges generating the zero voltage switching condition for the secondary slave switch. The secondary slave switch is switched on at a time determined in accordance with the waveform generated by the transformer. When the secondary slave switch is switched on, the transformer discharges and ultimately the charge from an output capacitor flows into the transformer as a backflow which charges the transformer. The secondary slave switch is switched off at a time determined in accordance with a current flowing through said secondary switch.Type: ApplicationFiled: May 3, 2002Publication date: May 15, 2003Inventors: Arian Jansen, Xiaoyang Zhang
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Patent number: 5835360Abstract: A switched mode power supply is provided that has two output circuits one of which is directly regulated by control of the input switching device and the other of which is indirectly regulated. This indirect regulation is provided by means of an additional winding wound in common on an energy-storing magnetic core with windings of the first and second output circuits. The additional winding is connected between a lower-voltage one of the output circuits and the other, higher-voltage, output circuit such that when the lower-voltage output circuit is lightly loaded current can flow from this output circuit through the additional winding to the higher-voltage output circuit, this current decreasing as the loading on the lower-voltage output circuit increases.Type: GrantFiled: July 1, 1996Date of Patent: November 10, 1998Assignee: Hewlett-Packard CompanyInventor: Arian Jansen
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Patent number: 5828204Abstract: An electrical power supply is provided with a regulation stage which on being supplied at its input with a dc input voltage with a significant ripple component (V.sub.S1.sbsb.--.sub.OUT), outputs a dc output voltage (V.sub.S2.sbsb.--.sub.OUT) at a level substantially equal to the dc input voltage value at the troughs of the input ripple component (V.sub.T). As a result of this operation, the power dissipated in the stage is minimized. In order to regulate the dc output voltage (V.sub.S2.sbsb.--.sub.OUT) to be at a particular level, this output voltage is compared to a reference to produce a control signal (S) that is fed back to an upstream regulation stage. This upstream stage then serves to vary the level of the trough voltage at the input of the downstream regulation stage.Type: GrantFiled: July 1, 1996Date of Patent: October 27, 1998Assignee: Hewlett-Packard CompanyInventor: Arian Jansen
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Patent number: 5682306Abstract: A switched mode power supply is provided which combines voltage regulation and power factor correction in a single converter stage. The power supply comprises a bridge rectifier feeding a double rectified voltage sine wave to a flyback converter comprising input and output circuits connected by an energy-storing transformer. The input circuit comprises an energy-storing inductor, a switching device connected in series with the inductor across the output of the bridge rectifier, a control arrangement for controlling the cyclic turning on and off of the switching device, and a coupling capacitor connected in series with the primary winding of the transformer across the switching device.Type: GrantFiled: July 1, 1996Date of Patent: October 28, 1997Assignee: Hewlett-Packard CompanyInventor: Arian Jansen