Abstract: A power stage controller includes: a reference circuit having a first reference input and a reference output, the first reference input adapted to be coupled to an input terminal of a power stage, and the reference circuit configured to adjust a reference voltage at the reference output responsive to whether a voltage at the first reference input is below a threshold; and a comparator having a current sense input, a second reference input, and a comparator output, the current sense input adapted to be coupled to a current terminal of the power stage, the second reference input coupled to the reference output, and the comparator output coupled to a driver input of a driver circuit configured to configured to control a driver output adapted to be coupled to a gate of a transistor of the power stage and responsive to the driver input.

Abstract: Recently, it is desired to improve responsiveness in case where a drop in the output voltage is prevented. A power supply control device is provided, comprising a switch control unit for controlling an ON/OFF state of a switching device of a boosting chopper using an oscillation wave, a voltage acquisition unit for acquiring DC output voltage corresponding to an output of the boosting chopper, and an oscillation control unit for reducing a change speed of the oscillation wave during at least a part of a period during which the switching device is in an ON state, in response to a drop in the DC output voltage.

Abstract: A control circuit of a power converter is coupled to an output stage and controls it to convert an input voltage into an output voltage and generate an output current. The control circuit includes a ripple generation circuit, a synthesis circuit, an error amplifier, a comparator and a PWM circuit. The ripple generation circuit generates a ripple signal according to an input voltage, an output voltage and output current. The synthesis circuit receives the ripple signal and a first feedback signal related to output voltage to provide a second feedback signal. The error amplifier receives the second feedback signal and a reference voltage to generate an error signal. The comparator receives a ramp signal and error signal to generate a comparison signal. The PWM circuit generates a PWM signal to control output stage according to the comparison signal. A slope of ripple signal is changed with the output current.

Abstract: A circuit includes a transformer having first and second transformer inputs and first and second transformer outputs. The first transformer output can be adapted to be coupled through a capacitor to a first input of an output stage. The second transformer output can be adapted to be coupled to a second input of the output stage. The circuit also includes a switching system having first and second inputs and first and second switching outputs. The first input can be configured to receive a switching signal. The second input can be configured to receive an input voltage. The first and second switching outputs respectively can be coupled to the first and second transformer inputs.

Abstract: A power supply with duty cycle limiting circuit includes a conversion circuit, a drive circuit, a control unit, and a duty cycle limiting circuit. The duty cycle limiting circuit converts a control signal into a control voltage, and determines whether a power switch of a power supply is turned off according to the control voltage and a threshold voltage to limit a duty cycle of the power switch.

Abstract: A switching converter circuit comprises an inductive circuit element; a driver switching circuit configured to provide energy to the inductive circuit element to generate an output voltage of the switching converter circuit, the output voltage having an alternating current (AC) signal component and a direct current (DC) signal component; a current sensing circuit configured to generate a current sense signal representative of inductor current of the inductive circuit element, wherein an output of the current sensing circuit is coupled to a bias circuit node; and a dynamic bias circuit configured to apply a dynamic bias voltage to the bias circuit node, wherein the dynamic bias voltage includes an AC component that tracks the AC signal component of the output voltage.

Abstract: The present disclosure generally relates to the combination of MEMS intrinsic technology with specifically designed solid state ESD protection circuits in state of the art solid state technology for RF applications. Using ESD protection in MEMS devices has some level of complexity in the integration which can be seen by some as a disadvantage. However, the net benefits in the level of overall performance for insertion loss, isolation and linearity outweighs the disadvantages.

Abstract: A flyback converter to control conduction time in AC/DC conversion technology. The flyback converter includes a primary side and a secondary side. The primary side includes a main switch connecting a primary coil to the input of the flyback converter in series. The secondary side includes a secondary coil coupling with the output terminal of the flyback converter. When a switching frequency of the main switch is at a preset first on time in the range between the off frequency and the second switching frequency, the on-time of the main switch continuously changes corresponding to output load changes. When the switching frequency of the main switch is higher than the first switching frequency, the on time of the main switch is constant. The on time is controlled to change linearly, so as to avoid excessive changes in the output voltage ripples, thereby improving circuit efficiency.

Abstract: A switch mode power supply includes a PWM controller, a voltage converter, an output detector and a communicator. The PWM controller is to receive an actuation signal, and generates a PWM signal based on the actuation signal. The voltage converter is to receive the PWM signal and an external voltage, and converts, based on the PWM signal, the external voltage into first and second output voltages. The output detector is to receive the first and second output voltages, and generates an enable signal based on a target voltage value and a magnitude difference between the first and second output voltages. The communicator is to receive the enable signal, and generates the actuation signal corresponding to the enable signal.

Abstract: Provided is a battery-charging device that uses a full-bridge rectifier circuit in which each arm is composed of MOSFET as a circuit that rectifies an output of a magnet-type AC generator. The charging device comprises: an ON/OFF state establishment means that, on the basis of a polarity of a potential of each input terminal of the rectifier circuit, establishes ON/OFF state to be assumed by each MOSFET of the rectifier circuit when a battery is charged; a during-charging FET control means that performs control which matches the state of each MOSFET of the rectifier circuit with the state established by the ON/OFF state establishment means when the battery is charged; a short-circuit control means that performs short-circuit control which causes short-circuiting between output terminals of the generator when battery charging is paused; and a FET OFF means that generates a FET OFF time period in which all of the MOSFETs of the rectifier circuit assume an OFF state in a fixed cycle.

Abstract: A circuit device includes a pulse signal output circuit and a driving circuit. The pulse signal output circuit, when a detection voltage has decreased below a reference voltage, changes a pulse signal to an active level at which a switching element is turned on. The pulse signal output circuit, after the detection voltage has decreased below the reference voltage, performs monitoring as to whether or not the detection voltage has exceeded the reference voltage, and upon detecting that the detection voltage has exceeded the reference voltage, changes the pulse signal to an inactive level at which the switching element is turned off. The driving circuit outputs a driving signal based on the pulse signal to the switching element.

Abstract: A switching converter has a first converter output for connection to a user load and a second converter output for connection to the user load. A first direct current rail power negative terminal has a first positive output and a first negative output connected to the second converter output. A second direct current rail power negative terminal has a second negative output and a second positive output connected to the first positive output. A first switch has a first positive terminal connected to the first positive output, a first negative terminal and a first control terminal. A second switch has a second positive terminal connected to the first negative terminal, a second negative terminal connected to the second negative output, and a second control terminal. A pulse width modulator has a first modulator output connected to the first control terminal, and a second modulator output connected to the second control terminal.

Abstract: Disclosed are a power supply control device and an electronic apparatus. The power supply control device includes a power supply unit configured to generate an output voltage from an input voltage, and an output discharge unit configured to start to discharge the output voltage when an instruction to disable the power supply unit is given, and continue discharging the output voltage until the output voltage falls below a predetermined threshold voltage or until a predetermined delay time passes while the output voltage does not fall below the threshold voltage even when an instruction to enable the power supply unit is given. The electronic apparatus includes a power supply device including the power supply control device as a main constituent, and at least one load configured to operate while supplied with an output voltage from the power supply device.

Abstract: A switching module includes a switching unit and a determination unit configured to determine a function of the switching unit and an ON/OFF state of the switching unit. The switching unit is provided with a plurality of function determination resistors. The determination unit is configured to determine the function of the switching unit according to a combination of voltages applied to the plurality of function determination resistors corresponding to resistor values of the plurality of function determination resistors.

Abstract: An integrated switching regulator device has a switching mode regulator comprising an input voltage source and a switching circuit coupled to the input voltage source configured to generate a pulsed voltage from the input voltage. A low pass filter is coupled to the switching regulator and is configured to filter the pulsed voltage to provide a regulated voltage to a load. The low pass filter comprises at least two LC stages, wherein the first LC stage comprises an air cored inductor and each subsequent LC stage comprises a non-air cored inductor. The switching circuit comprises two or more switching elements configurable to operate at a switching frequency of several megahertz.

Abstract: The present document relates to power converters. A power converter has a first stage coupled between an input of the power converter and an intermediate node, and a second stage coupled between the intermediate node and an output of the power converter. The first stage has a capacitive voltage divider with a first flying capacitor, and the second stage has a second flying capacitor and an inductor. On the one hand, the power converter establishes, in a magnetizing state, a magnetizing current path in the second stage from the intermediate node via the inductor to the output of the power converter. On the other hand, the power converter establishes, in a capacitive state, a parallel current path in the second stage from the intermediate node via the second flying capacitor to the output of the power converter.

Abstract: A system may include a power converter configured to convert a source voltage from a power source to an output voltage at an output capacitor at an output of the power converter, a dual-mode power converter electrically coupled to the power converter, the dual-mode power converter having a plurality of switches and a power inductor, an energy storage element electrically coupled to the dual-mode power converter, and control circuity configured to, when the output voltage is below a threshold voltage magnitude, control the plurality of switches to operate the dual-mode power converter as a buck converter in order to transfer energy from the energy storage element to the output capacitor via an electrical current through the power inductor.

Abstract: A power supply unit for an aerosol inhaler includes: a power supply; a first DC/DC converter; a second DC/DC converter; and a circuit board. As viewed from a first direction perpendicular to a surface of the circuit board on which the first DC/DC converter and the second DC/DC converter are mounted, at least a portion of the circuit board includes: a connection portion; a first portion extending from the connection portion in a second direction perpendicular to the first direction; and a second portion extending from the connection portion in a third direction perpendicular to the first direction and the second direction. The first DC/DC converter is mounted on the first portion, and the second DC/DC converter is mounted on the second portion.

Abstract: A gate driver circuit comprises an auxiliary winding, a voltage summer, an auxiliary voltage bus, a gate driver integrated circuit (IC), and a controller. The auxiliary winding is positioned adjacently to the inductor and configured to inductively couple with the inductor. The voltage summer comprises a pair of diodes coupled to the auxiliary winding and a pair of capacitors coupled to the pair of diodes. The auxiliary voltage bus is configured to receive a summed voltage from the voltage summer based on a sum of voltages stored in the pair of capacitors. The gate driver IC is configured to receive a voltage from a positive rail of the auxiliary voltage bus and to output a gate control signal to control a switching device based on the received voltage and based on a pulse signal generated by the controller.

Abstract: An object is to reduce the time it takes to switch PWM signals used to perform drive control of a voltage converter. An inverted PWM signal used to perform drive control of a voltage conversion unit (20) is generated based on a result of comparison between a first voltage value and a first target value, and a second PWM signal used to perform drive control of the voltage conversion unit (20) is generated based on a result of comparison between a second voltage value and a second target value. Then, an AND signal or an OR signal is generated, the AND signal being in an ON state when both of the inverted PWM signal and the second PWM signal are in an ON state, the OR signal being in an ON state when at least one of the inverted PWM signal and the second PWM is in an ON state.