Patents by Inventor Martin Faerber
Martin Faerber 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: 10256720Abstract: Circuits and methods to achieve a hysteretic buck-boost converter system, separating buck and boost pulses based on monitoring a difference between the output voltage of the buck-boost converter and a reference voltage (error voltage) or alternatively based on monitoring additionally coil current or load current or both currents have been disclosed. The performance of the buck-boost converter can be further improved by using an optional output voltage change block monitoring if the output voltage rises or falls. The buck-boost converter disclosed has a very simple topology without a modulator block, which is regulating the duty cycle and without frequency compensation.Type: GrantFiled: March 31, 2017Date of Patent: April 9, 2019Assignee: Dialog Semiconductor (UK) LimitedInventors: Kemal Ozanoglu, Guillaume de Cremoux, Pier Cavallini, Martin Faerber
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Patent number: 10164532Abstract: A switched mode power converter comprising a main inductor and a half bridge for providing an inductor current is described. The power converter comprises a first output power switch for directing the inductor current to a first output port and bypass circuitry for making at least part of the inductor current available for controlling the switching state of at least one of the power switches. Furthermore, the power converter comprises a control unit configured to control the first output power switch such that the inductor current is directed to the first output port within different first time intervals. Furthermore, the bypass circuitry is controlled to make the inductor current available for controlling the switching state of the at least one power switch during a non-overlapping time interval.Type: GrantFiled: March 16, 2017Date of Patent: December 25, 2018Assignee: Dialog Semiconductor (UK) LimitedInventors: Horst Knoedgen, Martin Faerber
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Publication number: 20180287489Abstract: Circuits and methods to achieve a hysteretic buck-boost converter system, separating buck and boost pulses based on monitoring a difference between the output voltage of the buck-boost converter and a reference voltage (error voltage) or alternatively based on monitoring additionally coil current or load current or both currents have been disclosed. The performance of the buck-boost converter can be further improved by using an optional output voltage change block monitoring if the output voltage rises or falls. The buck-boost converter disclosed has a very simple topology without a modulator block, which is regulating the duty cycle and without frequency compensation.Type: ApplicationFiled: March 31, 2017Publication date: October 4, 2018Inventors: Kemal Ozanoglu, Guillaume de Cremoux, Pier Cavallini, Martin Faerber
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Patent number: 10014780Abstract: A multiphase switching converter with a plurality of phase circuits coupled with a common output node is presented. Each phase circuit has a drive signal generator to generate a separate drive signal for a switching element of the respective phase based on a feedback signal from the common output node. Multiple voltage loops with different bandwidths or hysteresis are suggested for a multiphase power converter. In embodiments, this allows a slow phase (‘Master’) with a big inductor and low switching frequency and one or multiple fast phases (‘Slaves’) with small inductors and high switching frequency. The Master phase will allow the system to have high efficiency at low output load, while the Slave phase(s) will deliver extra current during load transient and for higher loads.Type: GrantFiled: May 2, 2017Date of Patent: July 3, 2018Assignee: Dialog Semiconductor (UK) LimitedInventors: Alessandro S. Molari, Martin Faerber
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Patent number: 9991784Abstract: A system is disclosed which provides a dynamic current limit circuit that accurately defines both the lower and the upper limits for the current limit. The circuit ensures both the lower and upper current limits are well-controlled. The lower current limit is matched to the normal pulse-frequency modulation (PFM) limit, and the upper current limit is matched to the pulse-width modulation (PWM) limit. This implementation has several key benefits, including making the peak current limit accurate in both sync and dynamic sleep modes. If the scheme is carefully designed, the dynamic sleep current limit gives the best load transient response.Type: GrantFiled: September 2, 2016Date of Patent: June 5, 2018Assignee: Dialog Semiconductor (UK) LimitedInventors: Mark Childs, Martin Faerber, Jens Masuch, Giulio de Vita
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Publication number: 20180069468Abstract: A system is disclosed which provides a dynamic current limit circuit that accurately defines both the lower and the upper limits for the current limit. The circuit ensures both the lower and upper current limits are well-controlled. The lower current limit is matched to the normal pulse-frequency modulation (PFM) limit, and the upper current limit is matched to the pulse-width modulation (PWM) limit. This implementation has several key benefits, including making the peak current limit accurate in both sync and dynamic sleep modes. If the scheme is carefully designed, the dynamic sleep current limit gives the best load transient response.Type: ApplicationFiled: September 2, 2016Publication date: March 8, 2018Inventors: Mark Childs, Martin Faerber, Jens Masuch, Giulio de Vita
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Publication number: 20170324332Abstract: A multiphase switching converter with a plurality of phase circuits coupled with a common output node is presented. Each phase circuit has a drive signal generator to generate a separate drive signal for a switching element of the respective phase based on a feedback signal from the common output node. Multiple voltage loops with different bandwidths or hysteresis are suggested for a multiphase power converter. In embodiments, this allows a slow phase (‘Master’) with a big inductor and low switching frequency and one or multiple fast phases (‘Slaves’) with small inductors and high switching frequency. The Master phase will allow the system to have high efficiency at low output load, while the Slave phase(s) will deliver extra current during load transient and for higher loads.Type: ApplicationFiled: May 2, 2017Publication date: November 9, 2017Inventors: Alessandro S. Molari, Martin Faerber
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Publication number: 20170271990Abstract: A switched mode power converter comprising a main inductor and a half bridge for providing an inductor current is described. The power converter comprises a first output power switch for directing the inductor current to a first output port and bypass circuitry for making at least part of the inductor current available for controlling the switching state of at least one of the power switches. Furthermore, the power converter comprises a control unit configured to control the first output power switch such that the inductor current is directed to the first output port within different first time intervals. Furthermore, the bypass circuitry is controlled to make the inductor current available for controlling the switching state of the at least one power switch during a non-overlapping time interval.Type: ApplicationFiled: March 16, 2017Publication date: September 21, 2017Inventors: Horst Knoedgen, Martin Faerber
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Patent number: 9473029Abstract: A time off estimator and an adaptive controller implemented on an integrated circuit to emulate current dependent zero crossing circuitry to permit improved performance of a buck type switching mode power supply. The time off estimator circuit is enhanced by an automatic correction circuit for the timing of a zero crossing where energy to a reference capacitor returns to zero and is turned off awaiting the next cycle where the capacitor is again charged and discharged.Type: GrantFiled: May 16, 2013Date of Patent: October 18, 2016Assignee: Dialog Semiconductor GmbHInventors: Jindrich Svorc, Martin Faerber
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Patent number: 9343968Abstract: A time off estimator and an adaptive controller implemented on an integrated circuit to emulate current dependent zero crossing circuitry to permit improved performance of a buck type switching mode power supply. The time off estimator circuit is enhanced by an automatic correction circuit for the timing of a zero crossing where energy to a reference capacitor returns to zero and is turned off awaiting the next cycle where the capacitor is again charged and discharged.Type: GrantFiled: May 16, 2013Date of Patent: May 17, 2016Assignee: Dialog Semiconductor GmbHInventors: Jindrich Svorc, Martin Faerber
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Patent number: 9013163Abstract: Circuits and methods to detect a threshold for entering and leaving a discontinuous current mode of a buck converter have been disclosed. A buck converter is switched to continuous mode if the filtered battery current has reached a defined threshold current Ithccm. In order to expedite the transition from DCM mode to CCM mode the time delay between two or more pulses of a current through an inductor is monitored and the buck converter is switched to CCM mode if this time delay is smaller than a defined threshold.Type: GrantFiled: July 15, 2008Date of Patent: April 21, 2015Assignee: Dialog Semiconductor GmbHInventor: Martin Faerber
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Publication number: 20140340065Abstract: A time off estimator and an adaptive controller implemented on an integrated circuit to emulate current dependent zero crossing circuitry to permit improved performance of a buck type switching mode power supply. The time off estimator circuit is enhanced by an automatic correction circuit for the timing of a zero crossing where energy to a reference capacitor returns to zero and is turned off awaiting the next cycle where the capacitor is again charged and discharged.Type: ApplicationFiled: May 16, 2013Publication date: November 20, 2014Applicant: Dialog Semiconductor GmbHInventors: Jindrich Svorc, Martin Faerber
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Publication number: 20110319262Abstract: A combination, suitable for agricultural use comprising (I): a compound of formula (X) and (II): one or more agents selected, independently of each other, from any one of (A) to (G): (A) a certain fungicide; (B) a certain insecticide and/or nematicide; (C) a certain protein produced by the plant pathogenic bacterium, Erwinia amylovora; (D) a certain biological strain, (E) a certain Isoflavone; (F) a plant growth regulator; and (G) a plant activator, wherein compound of formula (X) is:Type: ApplicationFiled: September 16, 2009Publication date: December 29, 2011Applicant: SYNGENTA CROP PROTECTION, LLCInventors: Michael Schade, Christoph Grimm, Martin Faerber, Dieter Hofer, Kaspar Müller, Scott Campbell
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Publication number: 20110263429Abstract: A combination, suitable for agricultural use comprises (I) a compound of formula (X) and (II) one or more agents selected, independently of each other, from any one of (A) to (G): (A) a certain fungicide, (B) a certain insecticide or nematicide, (C) a certain protein produced by the plant pathogenic bacterium Erwinia amylovora, (D) a certain biological strain, (E) a certain Isoflavone, (F) a plant growth regulator, and (G) a plant activator, wherein compound of formula (X) is a mixture ofType: ApplicationFiled: October 28, 2008Publication date: October 27, 2011Applicant: SYNGENTA CROP PROTECTION, LLCInventors: Michael Schade, Christoph Grimm, Martin Faerber, Dieter Hofer, Kaspar Müller, Scott Campbell
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Publication number: 20100007318Abstract: Circuits and methods to detect a threshold for entering and leaving a discontinuous current mode of a buck converter have been disclosed. A buck converter is switched to continuous mode if the filtered battery current has reached a defined threshold current Ithccm. In order to expedite the transition from DCM mode to CCM mode the time delay between two or more pulses of a current through an inductor is monitored and the buck converter is switched to CCM mode if this time delay is smaller than a defined threshold.Type: ApplicationFiled: July 15, 2008Publication date: January 14, 2010Inventor: Martin Faerber