Kirchheim Unter Teck, Germany
Kirchheim Unter Teck, Germany

Dialog Semiconductor PLC is a German-based manufacturer of semiconductor based system solutions. The company is registered in the United Kingdom but headquartered in Kirchheim unter Teck, a town in the Stuttgart metropolitan area. Dialog Semiconductor develops integrated circuits for power and motor control as well as audio and display processing. Their products are mainly used within mobile phones and the automotive industry. Dialog Semiconductor is fabless, but maintains own test and physical laboratories at its headquarters in Kirchheim.The company generated a revenue of about 160 million dollars in 2008, 296 million dollars in 2010, and 902 million dollars in 2013, making it one of the fastest growing semiconductor companies in Europe. Customers include Sony Ericsson, Apple, Bosch, Sharp and Samsung.On 10 February 2011, Dialog semiconductor announced that it had completed a transaction to acquire SiTel Semiconductor B.V. , a leader in short-range wireless, digital cordless and VoIP technology.The company is listed on the Frankfurt Stock Exchange and is one of the thirty TecDAX companies. Wikipedia.

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Patent
Dialog Semiconductor | Date: 2016-09-19

A circuit for providing a current flowing from a supply voltage into an electric load is presented. The circuit comprises a first circuit branch connected between the supply voltage and an output node connected to the electric load, wherein the first circuit branch comprises a first transistor device, a second circuit branch connected between the supply voltage and a predetermined voltage level, wherein the second circuit branch comprises a series connection of a second transistor device that is a scaled replica of the first transistor device and a current source. The control terminals of the first and second transistor devices are connected to each other. A control circuit is configured to control the voltage at the control terminal of the first transistor device depending on a current flowing through the first transistor device. The application further relates to a method of operating such circuit.


A switching power converter is provided that cycles a power switch during a group pulse mode of operation to produce a train of pulses within a group period responsive to a control voltage being within a group mode control voltage range.


Patent
Dialog Semiconductor | Date: 2017-04-04

A switching power converter provides regulated voltage to a load. The switching power converter comprises a transformer including a primary winding coupled to an input voltage and a secondary winding coupled to an output of the switching power converter. The switching power converter further comprises a power switch coupled to the primary winding and a rectifier coupled to the secondary winding. Current is generated in the primary winding responsive to the power switch being turned on and not generated responsive to the power switch being turned off. A detection circuit measures a voltage across the rectifier. If the detection circuit detects a decrease in the voltage across the rectifier outside of a blanking period, the detection circuit generates a current pulse in the secondary winding of the transformer.


Patent
Dialog Semiconductor | Date: 2017-04-25

A method of controlling a power converter for converting a DC input voltage to a DC output voltage is presented The power converter comprises an inductor, one or more switching elements for energizing and de-energizing the inductor, a drive circuit for controlling switching operation of the one or more switching elements in accordance with a control signal, and a feedback circuit for generating the control signal on the basis of a first feedback quantity indicative of an actual output voltage of the power converter and in accordance with one or more circuit parameters of the feedback circuit, the method comprising: detecting an open loop condition of feedback control by the feedback circuit; and modifying at least one of the circuit parameters of the feedback circuit in such a manner that a time until the feedback control by the feedback circuit returns to the closed loop condition is reduced.


Patent
Dialog Semiconductor | Date: 2017-02-09

A method of data calibration, and in particular sensor calibration, which involves gathering an initial first estimate and then binning the data samples, so that calibration can be performed without the need for a known reference stimulus. The present disclosure relates to calibration of vectors in a measurement system, and in particular to calibration of a correction function for systematic errors in successive data vectors. There is provided a method of determining a vector calibration function comprising: binning successive data vectors; and optimising the binned data vectors once data vectors allocated to a minimum number of unique bins have been observed. The method comprises establishing an initial calibration estimate and where the binning and optimising are performed based on said initial calibration estimate.


An integrated passive device and power management integrated circuit are directly connected, active surface to active surface, resulting in a pyramid die stack. The die stack is flip-chip attached to a laminate substrate having a cavity drilled therein wherein the smaller die fits into the cavity. The die to die attach is not limited to IPD and PMIC and can be used for other die types as required.


Patent
Dialog Semiconductor | Date: 2017-01-24

History-based valley mode switching techniques and systems are provided to reduce the frequency spreading of switching noise in a switching power converter.


A switching power converter is provided that extrapolates from a reference voltage during dead periods of a rectified input voltage as determined from a comparison of an Isense voltage to a current threshold.


A voltage regulator is described. It comprises an amplification stage to control a voltage level of a first gain node and of a second gain node in response to an input voltage, to activate a first and a second output stage, respectively. It further comprises the first output stage to source a current at an output node of the voltage regulator from a first potential. The voltage regulator comprises the second output stage to sink a current at the output node to a second potential. The voltage regulator comprises a first operating point control circuit to set the voltage level of the first gain node such that a first maintenance current is sourced by the first output stage; and/or a second operating point control circuit to set the voltage level of the second gain node such that a second maintenance current is sunk by the second output stage.


Patent
Dialog Semiconductor | Date: 2017-01-17

The present document relates to the measurement of the current through a transistor. In particular, the present document relates to a circuit arrangement which allows an accurate measurement of the current through a power transistor. A circuit arrangement is described. The circuit arrangement is configured to provide an indication of a current flowing through a pass switch, when the pass switch is arranged in parallel to the circuit arrangement. The circuit arrangement comprises a matching unit which comprises a switch bank comprising a plurality of parallel reference switches; a resistor bank comprising a plurality of serial reference resistors; and a reference current source configured to provide a reference current flowing through the switch bank and the resistor bank. The resistor bank and the switch bank are arranged in series. The switch bank is adapted in accordance to a voltage dependent resistance of the pass switch, and the resistor bank is adapted in accordance to a voltage independent resistance of the pass switch.

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