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.


Time filter

Source Type

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: 2016-06-24

A driver circuit for generating a sequence of pulses of a drive voltage from a supply voltage is described. The drive voltage is used for operating an electrical actuator, such as an electrical engine or machine. The driver circuit comprises means for providing an amplitude indication of an amplitude of the supply voltage, which is used for generating a first pulse of the sequence of pulses. Furthermore, the driver circuit comprises an integration unit configured to integrate the amplitude indication for a duration of the first pulse, thereby generating an integrated voltage. In addition, the driver circuit comprises a comparator configured to compare the integrated voltage with a reference voltage, thereby generating a comparator signal. Furthermore, the driver circuit comprises a control unit configured to terminate the first pulse in dependence of the comparator signal.


A switching power converter is provided that switches between low-bandwidth PI control and a high-speed control of an output voltage responsive to comparing the output voltage to an upper output voltage limit and to a lower output voltage limit. The switching power converter adapts the upper and lower voltage limits responsive to a load demand.


Patent
Dialog Semiconductor | Date: 2016-04-15

A method of operating a charge pump where successive values of a charge pump output voltage are measured and compared is presented. The result of the comparison is used to adjust one or more parameters of the charge pump operation A charge pumps maximum efficiency is tracked by storing and comparing successive output voltage values, with sample and hold circuitry.


Patent
Dialog Semiconductor | Date: 2016-04-20

A buck converter device with minimum off-time operation, the device comprising a comparator providing an output signal of a minimum off time, a first amplifier, a p-channel MOSFET whose gate is connected to the output of a first amplifier providing a signal threshold voltage to a positive terminal of a comparator, a second amplifier; and, a second p-channel MOSFET whose gate is connected to the output of a second amplifier providing a signal to a negative terminal of a comparator, and a capacitor element.. A capacitor establishes a voltage whose rate of change is proportional to power supply Vdd, establishing a time to charge the capacitor to a threshold voltage proportional to (Vdd-Vref)/Vdd, and establishing a minimum off time on the output of a comparator. The buck converter minimum off time is adaptive at high loads, and is proportional to (1-D), where D is the duty cycle. The frequency is thereby stable and the interferences are controlled.


Patent
Dialog Semiconductor | Date: 2016-01-15

Circuits and methods to improve dynamic load transient performance of circuits supplying high current and having parasitic resistances are disclosed. These circuits comprise e.g. LDOs, amplifiers or buffers. The circuits and methods are characterized by including parasitic resistances, caused by bond wires, metallization of pass devices, and substrate routings, in a loop for fast transient response. Furthermore the circuits comprise a stabilization circuit within said loop and a separate pad for said loop.


A driver circuit using a power converter allows free-wheeling detection and/or provision of supply voltage. A circuit controls a switching state of a power switch. A first port of the switch is coupled to an inductor. The circuit is coupled to a control port of the switch wherein the control port of the switch is different from the first port of the switch. The circuit comprises a unit generating a signal for controlling the switching state of the switch wherein the signal is provided to the control port of the switch. Furthermore, the circuit comprises free-wheeling sensing means to detect an oscillation of a voltage at a measurement port of the switch wherein the measurement port of the switch is different from the first port of the switch and wherein the oscillation of the voltage at the measurement port indicates free-wheeling of the inductor.


Patent
Dialog Semiconductor | Date: 2016-01-15

Power converters, such as switched-mode power converters comprise a reduced number of sensing pins. A power converter is configured to convert electrical energy at an input voltage into electrical energy at an output voltage. The power converter comprises a power switch configured to be switched between on- and off-states; and a controller configured to generate a control signal for putting the power switch into the on-state and off-state, respectively; wherein the control signal is generated based on a first and second measurement signal from the power converter external to the controller. The controller comprises a sensing pin configured to sense the first measurement signal, when the power switch is in on-state, and configured to sense the second measurement signal, when the power switch is in off-state.


An overshoot reduction circuit within a low dropout voltage regulator eliminates an overshoot at an output terminal resulting from a transient fault condition occurring at an input or output terminal. The overshoot reduction circuit monitors to sense if there is a transient fault condition occurring at the input or output terminal and provides a Miller capacitance at the output terminal of a differential amplifier of the low dropout voltage regulator to prevent the output of the differential amplifier from being discharged to ground during the transient. A control loop circuit balances current within an active load of the differential amplifier to clamp the output of the differential amplifier to its normal operating point. When the transient fault condition ends, the output voltage of the differential amplifier is set such that a pass transistor of the low dropout regulator responds quickly to resume the regulation to reduce or eliminate the overshoot.


Patent
Dialog Semiconductor | Date: 2016-04-20

A hysteretic mode control circuit within a DC-to-DC converter is configured for varying the current limit that controls the switching interval and duration of a power switching section of the DC-to-DC converter to permit the DC-to-DC converter to manage large changes in output current load of the DC-to-DC converter. The hysteretic mode control circuit has a positive and a negative current limit section that develop a first and a second reference signal for turning on and turning off the first and the second switching device. The first and second reference signals are compared to an output voltage of the power switching section to determine if the first switching device or the second switching device is to be turned on or turned off.

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