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Dialog Semiconductor Inc patents (2016 archive)


Recent patent applications related to Dialog Semiconductor Inc. Dialog Semiconductor Inc is listed as an Agent/Assignee. Note: Dialog Semiconductor Inc may have other listings under different names/spellings. We're not affiliated with Dialog Semiconductor Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "D" | Dialog Semiconductor Inc-related inventors


Pwm actuator control with pulse regulation

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. ... Dialog Semiconductor Inc

Switching power converter with adaptive power factor correction

A switching power converter is provided that provides an adaptive power factor correction using a peak constant current mode and also a constant on time mode during each cycle of an input voltage.. . ... Dialog Semiconductor Inc

Digital like short circuit to ground protection for dc-dc converter

An adaptive method to protect a dc to dc buck converter from destruction in the event of a short circuit to ground at the output is described. The short circuit protection method is small and inexpensive, and uses very low current, allowing the buck converter to remain active and protected, as it self regulates below an acceptable maximum peak current. ... Dialog Semiconductor Inc

Infra-red wireless communication

An infrared signal generator with an interface for receiving an encoded infrared command; and protocol generation circuitry for generating a bitstream that comprises one or more data words that comprise data to be transmitted and one or more protocol words that describe symbols of an infrared protocol is presented. Optionally, the protocol generation circuitry comprises a first circuit for generating a data word and a second circuit for generating a protocol word. ... Dialog Semiconductor Inc

Dynamic clock divide for current boosting

In order to accelerate the response of buck converters to load transients buck converters having asymmetric phase designs having a load step detection are used. When a relatively large and fast load step is detected, the clock frequency of “fast” valley mode phases is reduced, which are populated with fast, low value inductors. ... Dialog Semiconductor Inc

Circuit and method for maximum duty cycle limitation in switching converters

A switching dc-to-dc converter has an adaptive duty cycle limiting circuit with an inductor current sensor to generate a sense signal indicative of magnitude of the inductor current. A replica signal is generated from the sense signal and transferred through a replica parasitic resistance circuit. ... Dialog Semiconductor Inc

Short circuit self-protected dc-to-dc buck converters

Buck converters with self-protection against short circuit at the buck converter outputs and intrinsic soft start-up circuitry are disclosed. The methods and circuits disclosed are applicable for pfm and pwm modulated converters. ... Dialog Semiconductor Inc

Bandgap voltage reference

A bandgap circuit for providing a bandgap voltage reference comprises a first capacitor and a second capacitor. An inverting amplifier, which is associated with an offset voltage has an input terminal connected to a first terminal of the first capacitor and a first terminal of the second capacitor, and an output terminal connected to an output terminal of the bandgap circuit. ... Dialog Semiconductor Inc

High efficiency switching charger with reduced input voltage ripple

A voltage or current regulated power converter for charging batteries, is described. The power converter comprises an inductor (l), a capacitor cell (c1, c2), switches (s1, s2, s3, s4, s5, s6, s7, s8) and a controller. ... Dialog Semiconductor Inc

High efficiency dc-to-dc converter with adaptive output stage

A circuit and method for providing an improved efficiency for a dcdc converter. A power converter, comprising a buck converter comprising an adaptive output, an adaptive transconductance block configured to evaluate resistive power terms, a multiplier block configured to provide capacitive power terms, and a comparator configured to compare resistive power and capacitive power terms for determining the selection of the branches of said adaptive output. ... Dialog Semiconductor Inc

Bandgap reference circuit and method for room temperature trimming with replica elements

A method and circuit for trimming a bandgap reference are described. The bandgap reference circuit comprises a first diode which is arranged in series with a first resistor between a reference point and a reference potential vss. ... Dialog Semiconductor Inc

Control circuit for multiple high side switches

The present document relates to the control of high side switches, e.g. The high side switches of half bridges. ... Dialog Semiconductor Inc

Cable protection device

One embodiment of a disclosed cable protection device connected between the positive and negative wires of the cable that provides an efficient method of protection from overheating of the device due to changes in temperatures with minimal power dissipation. The cable protection device includes a temperature monitoring device that continuously senses the temperature of the cable and device to check for overheating. ... Dialog Semiconductor Inc

Low-overhead current generator for lighting circuits

This application relates to a lighting system comprising a plurality of light emitting diode, led, circuits, and a power source for providing a drive voltage to the plurality of led circuits. For each led circuit, the lighting system comprises a first variable resistance element connected between the respective led circuit and ground, and a first feedback circuit configured to control a voltage at a first node between the respective led circuit and the respective first variable resistance element to a first voltage. ... Dialog Semiconductor Inc

10/27/16 / #20160315588

Method for an adaptive transconductance cell utilizing arithmetic operations

A first transconductance cell having a differential input voltage Δv1 and a forced output current Δi1, has a bias set by a feedback loop. A second transconductance cell having a differential input voltage Δv2 and using the same biasing as the first cell has analytically identical transconductance. ... Dialog Semiconductor Inc

10/20/16 / #20160308435

Charge pump

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 pump's maximum efficiency is tracked by storing and comparing successive output voltage values, with sample and hold circuitry.. ... Dialog Semiconductor Inc

10/20/16 / #20160306371

Control scheme for hysteretic buck controller with inductor coil current estimation

A circuit and method for power converter for improved current monitoring, comprising a buck converter comprising a high side switch, a current sensing circuits parallel to the buck converter configured to sense a current through a low side switch, and a positive slope inductor coil estimator sensing circuit parallel to a buck converter configured to estimate a current magnitude.. . ... Dialog Semiconductor Inc

10/06/16 / #20160294371

Bit-capture latch with transparency option

A novel and simple way is presented to implement a zero-capture latch circuit comprising a pair of or and invert gates connected to achieve a zero-capture latch with transparency option, the output of said zero-capture latch configured to latch the input and store a zero, in functional mode, and a buffered version of the input, in test mode. A one-capture latch circuit comprising a pair of and or invert gates connected to achieve a one-capture latch with transparency option, the output of said one-capture latch configured to latch the input and store a one, in functional mode, and a buffered version of the input, in test mode, is also presented. ... Dialog Semiconductor Inc

10/06/16 / #20160294289

Protocol for communication between secondary side and primary side of isolated switching power converters

A power converter system comprises a switching power converter having a primary side and a secondary side that are electrically isolated from each other. A first controller on the primary side of the switching power converter controls a switch in the switching power converter on or off at a switching frequency of the switching power converter to regulate an output voltage of the switching power converter. ... Dialog Semiconductor Inc

09/29/16 / #20160282890

Quiescent current limitation for a low-dropout regulator in dropout condition

An low dropout regulator and method that has reduced quiescent current consumption is presented. The voltage regulator circuit comprises an output terminal, a first circuit branch connected between an input voltage level and the output terminal, a second circuit branch connected between the input voltage level and a predetermined voltage level, a first current mirror for mirroring a current flowing in the second circuit branch to the first circuit branch, a first feedback circuit to regulate the output voltage, and a second feedback circuit for controlling the second switching element. ... Dialog Semiconductor Inc

09/15/16 / #20160268971

Current driven crystal oscillator

An oscillator circuit with an oscillator stage and a first current source arranged to drive the oscillator stage is presented. The oscillator stage has an oscillator stage input terminal, an oscillator stage output terminal, an oscillator arranged to provide an oscillating signal between the oscillator stage input terminal and the oscillator stage output terminal. ... Dialog Semiconductor Inc

09/15/16 / #20160266178

Vds equalizer offset compensation for a current sense circuit

A current sense circuit for a pass transistor is described. The current sense circuit comprises a sense transistor, a differential amplifier comprising a differential input and a differential output, and a differential difference amplifier, referred to as dd amplifier, comprising a main differential input, an auxiliary differential input and an output; wherein the differential output of the differential amplifier is coupled to the auxiliary differential input of the dd amplifier; wherein the output port of the pass transistor is coupled to a first port of the main differential input and wherein the output port of the sense transistor is coupled to a second port of the main differential input. ... Dialog Semiconductor Inc

09/15/16 / #20160266175

Accurate current sensing

A current sense circuit for a pass transistor is described. The circuit comprises a sense transistor having input and control ports that are coupled to input and control ports respectively of the pass transistor. ... Dialog Semiconductor Inc

09/08/16 / #20160259355

Dynamic current-limit circuit

A comparator circuit is described, which is configured to provide a control current and a control voltage based on a first input voltage and a second input voltage. The comparator circuit comprises an input amplifier configured to generate an output signal based on the first input voltage and the second input voltage, and offset means configured to generate a first offset. ... Dialog Semiconductor Inc

09/01/16 / #20160254753

Detecting open connection of auxiliary winding in a switching mode power supply

A power converter has a transformer including a primary winding coupled to an input voltage, a secondary winding coupled to an output of the power converter, and an auxiliary winding is configured to detect an open connection fault of the auxiliary winding. The power converter includes a current source coupled to the auxiliary winding that, when activated, supplies a current to the auxiliary winding. ... Dialog Semiconductor Inc

09/01/16 / #20160252924

Slew rate and in-rush current controller

An in-rush current controller to turn-on a semiconductor output switch is described. The output switch is arranged in series with an output capacitor. ... Dialog Semiconductor Inc

08/25/16 / #20160249135

Optimised loudspeaker operation

An optimised method for driving a loudspeaker is used for protecting the loudspeaker from damage due to excessive excursion or from overheating. The playback power of an incoming audio data stream is compared with a feedback power derived from the loudspeaker actuator and the comparison is used to adjust the frequency response of the loudspeaker, across individual sub bands.. ... Dialog Semiconductor Inc

08/18/16 / #20160241225

Current-controlled active diode

This application relates to an active diode circuit for letting current pass in one direction and blocking current in the opposite direction. The active diode circuit comprises a transistor, a control voltage generation circuit for generating a control voltage that is supplied to a control terminal of the transistor, and a sensing circuit for detecting a quantity indicative of a current flowing through the transistor. ... Dialog Semiconductor Inc

08/11/16 / #20160233768

Synchronous rectifier for buck converter without the need for a comparator

A switch mode power supply, which functions in a continuous current mode and a discontinuous mode employing a zero crossing control circuit for determining a polarity of an inductor current and from the polarity of the inductor current, controlling an operational state of a switching section of the switch mode power supply such that the inductor current becomes approximately zero amperes at the end of each demagnetization phase of operation.. . ... Dialog Semiconductor Inc

08/11/16 / #20160233663

Short circuit protection for a power switch

A power providing circuit which is configured to provide a current at an output voltage to a load at an output of the power providing circuit is described. The power providing circuit comprises a power transistor which is configured to draw the current from a supply voltage, wherein a resistance of the power transistor is controlled using a control voltage which is applied to a control port of the power transistor. ... Dialog Semiconductor Inc

07/28/16 / #20160218628

Power converter with dynamic preload

A power converter with a dynamic preload. The power converter includes a magnetic component coupled between an input and an output of the power converter. ... Dialog Semiconductor Inc

07/21/16 / #20160211748

Self-powered bjt driver for power supplies

An apparatus for providing auxiliary power to an off-line switcher. The apparatus includes a high voltage semiconductor switch and a driver for the high voltage semiconductor switch. ... Dialog Semiconductor Inc

07/14/16 / #20160204687

Discharger circuit

A node that stores a charge is discharged in two phases, starting with a current controlled phase where a current mirror sink controls the current sunk from the node, and then moving to a second phase where a resistive discharge is provided. A pull down device such as a transistor switches from its saturation mode in the first phase to its linear mode in the second phase. ... Dialog Semiconductor Inc

07/07/16 / #20160197508

Maximum power point tracking in energy harvesting dc-to-dc converter

An energy harvesting direct current to direct current ‘dc-to-dc’ converter circuit is presented. It is comprised of an energy storage element, an input configured to receive an input voltage, an output; switching means configured to perform cycles. ... Dialog Semiconductor Inc

07/07/16 / #20160195884

Circuits and method for controlling transient fault conditions in a low dropout voltage regulator

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. ... Dialog Semiconductor Inc

06/09/16 / #20160164421

Regulation of the power supply voltage for a flyback converter controller

. . A switching power converter is provided that includes a detector to detect whether a controller power supply voltage has fallen below a threshold voltage during a dormant period in which a power switch is no longer cycling to deliver power to a load. In response to a detection of such a threshold crossing by the detector, a controller powered by the controller power supply voltage is configured to cycle the power switch to replenish the controller power supply voltage.. ... Dialog Semiconductor Inc

06/09/16 / #20160164420

Adaptive reference voltage for switching power converters

A switching power converter is provided that detects an activity signal generated in response to load activity using an adaptively-declining threshold.. . ... Dialog Semiconductor Inc

06/09/16 / #20160164419

Programming of a two terminal device

A two-terminal device that is configured to respond to a voltage modulation of an input signal received through the two terminals by triggering an action. The two-terminal device is further configured to verify a result of the triggered action by modulating a current driven through the two termi+6nals.. ... Dialog Semiconductor Inc

06/09/16 / #20160164397

Adaptive bjt driver for switching power converter

A flyback converter is provided that includes a base driver for driving a base current into a base of a bjt power switch. The base driver is controlled so as to adaptively vary the base current across at least some of the pulses.. ... Dialog Semiconductor Inc

06/02/16 / #20160157306

Resonance converter for driving multiple ac led strings

An ssl assembly is described, which comprises an alternating current, referred to as ac, solid state lighting, referred to as ssl, unit. The ac ssl unit comprises at least two ssl devices which are arranged in an anti-parallel manner with respect to one another. ... Dialog Semiconductor Inc

05/26/16 / #20160147246

Fast bias current startup with feedback

A current mirror circuit comprising an input driver connected to a plurality of output driver circuits through a current mirror network. The current mirror network is separated into two parts, wherein the first part comprises the input driver circuit and the second part comprises capacitive loads including a filter capacitor. ... Dialog Semiconductor Inc

05/26/16 / #20160146877

Load connection detection

An apparatus comprises an output port to be connected to a load; a first input port to receive a first input signal; and a second input port coupled between the first input port and the output port, to receive a second input signal. The apparatus further comprises a coupling circuit to couple the second input signal to the output port and a frequency isolation circuit that has a frequency response to propagate the first input signal to the output port but prevent the second input signal from propagating to the first input port. ... Dialog Semiconductor Inc

05/19/16 / #20160141975

Capacitor drop power supply

A capacitor drop power supply is provided where excess charge is damped into a low impedance switch, avoiding the dissipation of extra energy seen in current designs. Also, because the excess charge is not dissipated, it then becomes available for when a load is applied thus increasing the efficiency of the power supply. ... Dialog Semiconductor Inc

05/19/16 / #20160141957

Output current monitor circuit for switching regulator

A circuit and method for providing switching regulation with an improved current monitor comprising a pulse width modulation (pwm) controller configured to provide an output signal voltage, an output stage configured to provide switching comprising a first and second transistor, and first inverter, a sense circuit configured to provide signal sensing from said output stage, a sampling switch circuit configured to provide sample signals from said sense circuit, a differential integrator circuit configured to provide sample signals from said sampling switch circuit, a comparator configured to provide signals from said integrator circuit, a control logic circuit configured to provide signals from said comparator, a current digital-to-analog converter (dac) configured to provide feedback signal from said control logic circuit, and, a digital filter configured to provide output current information.. . ... Dialog Semiconductor Inc

05/12/16 / #20160134381

Method and apparatus for powering a portable device

A method of monitoring a process of powering a portable device through a cable connected between a power supply and said portable device is proposed, the method comprising applying a time-dependent current variation to one end of the cable in accordance with a spreading sequence, detecting a time-dependent voltage variation at the one end of the cable, the time dependent voltage variation resulting from said applying of the time-dependent current variation, and determining a quantity indicative of an impedance of the cable assembly based on the time-dependent voltage variation and the spreading sequence. Further, an apparatus for monitoring a process of powering a portable device through a cable connected between a power supply and said portable device is proposed.. ... Dialog Semiconductor Inc

05/12/16 / #20160134196

Converter one pin sensing

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. ... Dialog Semiconductor Inc

05/12/16 / #20160134183

Vcc charge and free-wheeling detection via source controlled mos transistor

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. ... Dialog Semiconductor Inc

05/12/16 / #20160133813

On-chip thermoelectric generator

An on-chip thermoelectric generator comprises an integrated circuit comprising a substrate and at least one thermocouple integrated with the substrate, wherein the thermocouple is configured to convert a temperature difference into a voltage. A metal bump or metal pillar is thermally connected to a portion of the thermocouple for generating the temperature difference. ... Dialog Semiconductor Inc

05/12/16 / #20160132064

Load transient , reduced bond wires for circuits supplying large currents

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. ... Dialog Semiconductor Inc

05/05/16 / #20160126838

Automatic reference generator in switching boost converters

The present document relates to switching dc converters in particular, the present document relates to creating an auxiliary reference voltage for the switching converter to implement a dynamic correction of static load regulation. Main objective of the disclosure is minimizing the regulation error on account of accuracy when non-idealities present in the regulation loop are considered. ... Dialog Semiconductor Inc

05/05/16 / #20160124447

Method to pre-set a compensation capacitor voltage

Compensation capacitor voltages of dc-to-dc converters are pre-set without switching to enable smooth transition from sleep mode to active mode. Appropriate compensation capacitor voltages are set regardless of the length of no-switching sleep period or input voltage change. ... Dialog Semiconductor Inc

04/28/16 / #20160119992

Accurate mains time-base for led light driver

A controller for a driver circuit of a solid state lighting (ssl) device is described. The driver circuit comprises a power converter to transfer energy from ac mains voltage to the ssl device. ... Dialog Semiconductor Inc

04/07/16 / #20160098057

Voltage regulator

A voltage regulator, which contains a circuit to determine its output power. It has an output node providing an output voltage for a load; current sensing means for sensing an output current flowing at the output node; voltage providing means for providing a digital representation of the output voltage or of an input voltage to the voltage regulator; output power determination means comprising a digitally controllable variable resistance circuit receiving the digital voltage representation from the voltage providing means and generating a resistance, wherein the variable resistance circuit is connected to the current sensing means to obtain a signal that depends upon the output current and generates a voltage depending on the generated resistance and the obtained signal; and the output power determining means are adapted to determine the output power of the voltage regulator based on the voltage generated by the variable resistance circuit.. ... Dialog Semiconductor Inc

03/31/16 / #20160095181

Low-overhead current generator for lighting circuits

This application relates to a lighting system comprising a plurality of light emitting diode, led, circuits, and a power source for providing a drive voltage to the plurality of led circuits. For each led circuit, the lighting system comprises a first variable resistance element connected between the respective led circuit and ground, and a first feedback circuit configured to control a voltage at a first node between the respective led circuit and the respective first variable resistance element to a first voltage. ... Dialog Semiconductor Inc

03/31/16 / #20160094208

Dynamic level shifter circuit

A level shifter does not require any dc (standby) current consumption and has a fast operation with low propagation delay. The level shifting from input to output voltage ranges is performed by a pair of level shifting capacitors. ... Dialog Semiconductor Inc

03/24/16 / #20160087615

Debounce circuit with dynamic time base adjustment for a digital system

A debounce circuit eliminates noise, glitches, or transient signal variations resulting from mechanical bounce occurring at a change of state of analog signals and provides a dynamic debounce period alteration and time base variation without loss of the current debounce state. The debounce circuit has a physical counter that is configured for being adjusted within a virtual counter such that the noise, glitches, or transient signal variations resulting from mechanical bounce occurring at an initiation of a change of state of an analog input signal from a source device are filtered by delaying a change of output state of the debounce circuit. ... Dialog Semiconductor Inc

03/24/16 / #20160087530

Ringing suppression method and apparatus for power converters

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.. . ... Dialog Semiconductor Inc

03/24/16 / #20160085559

Conditional processor auto boot with no boot loader when coupled with a nonvolatile memory

The use of a sleep, or halt, instruction enables a processor to halt execution when read from a non-volatile memory. The opcode for the sleep instruction is the same value as the constant bit value of an un-programmed, nonvolatile memory. ... Dialog Semiconductor Inc

03/17/16 / #20160081153

Powering internal components of led lamps using dissipative sources

An led lamp comprises one or more leds and an led driver receiving an input signal from a dimmer switch indicative of an amount of dimming for the led lamp. The led driver controls regulated current through the one or more leds based on the input signal such that an output light intensity of the one or more leds substantially corresponds to the amount of dimming for the led lamp. ... Dialog Semiconductor Inc

03/17/16 / #20160081152

Generating a voltage feedback signal in non-isolated led drivers

An led lamp comprises one or more leds, an inductive element coupled to an input voltage source and the one or more leds, and a switch coupled to the inductive element. A first current detector is coupled between the input voltage source and a ground node of the led lamp, such that a current detected by the first current detector is proportional to a bulk voltage across the input voltage source. ... Dialog Semiconductor Inc

03/17/16 / #20160081151

Dynamic bleeder current control for led dimmers

Led lamp systems as described herein include a dimmer switch and a bleeder circuit. The bleeder circuit provides a bleeder current to management voltage and to prevent the dimmer switch from turning off prematurely. ... Dialog Semiconductor Inc

03/17/16 / #20160081149

Solid state lamp control

Intelligent control of a solid state lamp when coupled to a trailing edge phase cut dimmer switch is provided. On and off cycles of the lamp's power stage switch are enabled during a period when the energy in the bulk capacitor is at its highest levels. ... Dialog Semiconductor Inc

03/17/16 / #20160081148

Led driver with comprehensive fault protections

The embodiments disclosed herein describe a set of fault detection circuits for led circuits in an led channel. A first fault detection circuit is configured to detect a short fault across one or more leds. ... Dialog Semiconductor Inc

03/17/16 / #20160077536

Power converter

Control circuit for a power converter that converts an input voltage into an output voltage is disclosed. The control circuit comprises a power switch; a power switch driver coupled with the power switch to control the switching state of the power switch so as to provide the output voltage at an output port of the power converter, the output port for coupling with a first terminal of a load; a load port for coupling with a second terminal of the load; a switching element coupled with the load port to selectively connect the load port to ground; and operating voltage supply means coupled with the load port, for providing an operating voltage to the control circuit.. ... Dialog Semiconductor Inc

03/17/16 / #20160077165

Time based ac line detection

A power supply detection system and method for determining the ac mains voltage range when a device (e.g., led based bulbs) is indirectly connected to the ac mains and the device does not receive the complete sinusoidal ac mains signal.. . ... Dialog Semiconductor Inc

03/17/16 / #20160077140

Low power on-chip impedance detector

An impedance detector for measuring an impedance of a circuit comprises a frequency source, a resistor connected in between the frequency source and the circuit to be measured, a phase shift circuit for applying a phase shift to a signal from the frequency source, a first multiplier for mixing the signal from the frequency source with a signal from the circuit to be measured, a second multiplier for mixing the phase shifted signal with the signal from the circuit to be measured, and a processing circuit for determining an indication of an impedance of the circuit to be measured in dependence on the first mixed signal and the second mixed signal.. . ... Dialog Semiconductor Inc

03/10/16 / #20160070291

Static offset reduction in a current conveyor

A voltage mirror circuit, having an input node and an output node provides substantially equal voltage levels at the input node and the output node. The voltage mirror circuit comprises an input current source transistor, an input gain transistor arranged in series with the input current source transistor such that the input gain transistor is traversed by the bias current, wherein the voltage level at the input node corresponds to the voltage drop across the input current source transistor and the input gain transistor. ... Dialog Semiconductor Inc

03/03/16 / #20160064964

Battery balancing with resonant converter

A system and a method for charging of rechargeable batteries is presented. In particular, the charging of battery stacks comprising a plurality of battery cells or storage cells is presented. ... Dialog Semiconductor Inc

02/25/16 / #20160054748

Robust sink / source output stage and control circuit

Multi-stage amplifiers, such as linear regulators, configured to provide a constant output voltage subject to load transients, are described. The multi-stage amplifier includes a first amplification stage which activates or deactivates a first output stage in response to an input voltage at an input node. ... Dialog Semiconductor Inc

02/18/16 / #20160049874

Apparatus and method for current sharing in a multi-phase switching regulator

An apparatus and method for a multi-phase switch regulator with improved efficiency is disclosed. The device has parallel implementations for the different phases comprising a driver, a current sense variable gain amplifier, a current share circuit, a pulse width modulation (pwm) control circuit, a trim network, and an inductor. ... Dialog Semiconductor Inc

02/18/16 / #20160049859

Digital pulse skipping modulation for buck converter with auto-transition to pulse frequency modulation (pfm)

An apparatus and method for a buck converter and regulation loop with pulse skipping modulation (psm) and auto-transition to pulse frequency modulation (pfm) comprising of a peak current loop configured to provide a method of generating a constant minimal inductor peak current, a system configured to provide a method of skipping pulses utilizing a pulse skipping modulation (psm) mode of operation, and, the peak current loop configured to provide a method of auto-transition from the pulse skipping modulation (psm) to a pulse frequency modulation (pfm) mode of operation.. . ... Dialog Semiconductor Inc

01/28/16 / #20160029446

Power converter for light bulb assembly comprising multiple led arrays

Circuitry for solid state lighting (ssl) light bulb assemblies is presented. In particular, a driver circuit and/or power converter used for such light bulb assemblies is described. ... Dialog Semiconductor Inc

01/28/16 / #20160028314

Secondary-side dynamic load detection and communication device

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. ... Dialog Semiconductor Inc

01/28/16 / #20160028313

Secondary-side dynamic load detection and communication device

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. ... Dialog Semiconductor Inc

01/28/16 / #20160026204

High-voltage to low-voltage low dropout regulator with self contained voltage reference

A circuit and method for providing a temperature compensated voltage comprising a voltage regulator circuit configured to provide a regulator voltage, a voltage reference circuit configured to provide a reference voltage, vref, a comparison circuit configured to provide a control voltage vctl, and an operational amplifier configured to provide amplification and coupling to said comparison circuit, wherein the voltage can be a high voltage greater than 1.2 v.. . ... Dialog Semiconductor Inc

01/21/16 / #20160020691

Hysteretic power factor control method for single stage power converters

Embodiments described herein describe a switching power converter that includes a transformer, a switch, and a controller that generates a control signal to turn on and turn off the switch. For each alternating current (ac) half-cycle of an input voltage, the controller determines a minimum value of a signal representing an on-time of the power converter, compares the determined minimum value with a threshold value that is used to determine whether the switching power converter operates in a constant on-time mode or in a constant power mode, and adjusts the threshold value based on a result of the comparison. ... Dialog Semiconductor Inc

01/21/16 / #20160018834

Leakage reduction technique for low voltage ldos

The present document relates to multi-stage amplifiers, such as linear regulators (e.g. Low-dropout regulators). ... Dialog Semiconductor Inc

01/07/16 / #20160007417

Multi-function terminal

Embodiments described herein describe a power supply controller configured to control a power supply that provides power to an output load via a power supply transformer. The power supply controller includes a first terminal that provides supply voltage to the controller. ... Dialog Semiconductor Inc








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