Abstract: A method is provided comprising: detecting a connection between an electronic device and a battery charger; transmitting to the battery charger a first request for at least one of a first voltage level and a first current level; receiving from the battery charger a signal; and charging a battery of the electronic device with the signal.

Abstract: A method is provided comprising: detecting a connection between an electronic device and a battery charger; transmitting to the battery charger a first request for at least one of a first voltage level and a first current level; receiving from the battery charger a signal; and charging a battery of the electronic device with the signal.

Abstract: In a general aspect, a circuit assembly apparatus can include first and second semiconductor die, and a substrate. The substrate can include an insulating layer; a first metal layer disposed on a first side of the insulating layer, a first side of the first semiconductor die disposed on and electrically coupled with the first metal layer; a second metal layer disposed on a second side of the insulating layer, the second side of the insulating layer being opposite the first side of the insulating layer, a first side of the second semiconductor die being disposed on and electrically coupled with the second metal layer; and a conductive via disposed through the insulating layer, the conductive via electrically coupling the first metal layer with the second metal layer, the first metal layer, the conductive via and the second metal layer electrically coupling the first semiconductor die with the second semiconductor die.

Abstract: In a general aspect, an apparatus can include a semiconductor die, a substrate, and a leadframe coupled to the substrate. The apparatus can include a conductive clip coupled to the semiconductor die. The leadframe can be disposed between the semiconductor die and the substrate, and the semiconductor die can be disposed between the conductive clip and the leadframe.

Abstract: A power supply device includes a power switch that is switched according to a gate voltage. A sense resistor receives a switch current that flows through the power switch to develop a sense voltage. A peak of a primary-side current is detected from the sense voltage.

Abstract: A power semiconductor device includes: a substrate; an anode electrode and a cathode electrode disposed on the substrate; a well region disposed inside the substrate in a lower portion of the anode electrode, and having p-type conductivity; an NISO region disposed in a lower portion of the well region inside the substrate, and having a first n-type impurity concentration; and an n-type buried layer disposed in a lower portion of the NISO region, and having a second impurity concentration greater than the first n-type impurity concentration, inside the substrate.

Abstract: A phase-cut dimming control system according to the embodiment includes a phase angle detector configured to detect a phase angle of an input voltage generated by phase-cut dimming, a feedback signal generator configured to generate a first reference signal corresponding to the detected phase angle, and generate an initial feedback signal based on a detection signal corresponding to power supplied to a load and the first reference signal, a feedback signal modulator configured to modulate the initial feedback signal and generate a feedback signal, a power transmission controller configured to generate a control signal which controls power transmission according to the feedback signal, and a power transmission circuit configured to transmit power to the load according to the control signal.

Abstract: A method for controlling a power converter includes determining whether a value of a feedback signal is in a first range, detecting a plurality of points of the feedback signal, and decreasing one or both of a proportional coefficient and an integral coefficient of a first control loop of the power converter at a first plurality of times corresponding to the detected plurality of points of the feedback signal when the value of the feedback signal is in the first range. The feedback signal indicates an output signal of the power converter. A circuit for controlling a power converter includes a transient detector that generates a transient detection signal in response to a feedback signal indicating an output signal of the power converter and a gain selector that generates a gain selection signal in response to the transient detection signal.

Abstract: An electrostatic discharge circuit may include a substrate, an N+ buried layer in the substrate, an n-type epitaxial layer on the N+ buried layer and the substrate, a first P? region in an anode region of the n-type epitaxial layer, a first N+ region in the first P? region, an N-well in a cathode region of the n-type epitaxial layer, a first P+ region in the N-well, and a second N+ region located in the N-well. The first N+ region may be located closer to the second N+ region than the first P+ region.

Abstract: A power factor correction circuit includes an overcurrent protection circuit, and the overcurrent protection circuit detects at least one of a line input voltage, a switch current of a power factor correction circuit, and a line period peak and performs overcurrent protection operations using a detection result.

Abstract: According to an implementation, a resonant converter for detecting non-zero voltage switching includes an oscillator configured to generate a first clock signal to drive a first power switch, and a second clock signal to drive a second power switch. The resonant converter includes a non-zero voltage switching (non-ZVS) detection circuit configured to receive an integrated current sense signal sensed on a primary side of a transformer of a resonant network, and determine a polarity of a voltage of the integrated current sense signal at a predetermined point in the first clock signal or the second clock signal during a switching cycle. The non-ZVS detection circuit is configured to detect a non-ZVS event based on the polarity of the voltage of the integrated current sense signal at the predetermined point in the first clock signal or the second clock signal during the switching cycle.

Abstract: According to an implementation, a resonant converter for burst mode control includes an oscillator configured to control switching operations of at least one power switch, and a burst mode controller configured to control a burst mode by determining a start of a burst pulse of the burst mode using a first internal signal and determining an end of the burst pulse of the burst mode using a second internal signal. The burst mode controller is configured to stop the switching operations during the burst pulse.

Abstract: According to an implementation, a resonant converter for resonant capacitance stabilization during start-up includes an oscillator configured to generate a first clock signal to drive a first driver for a first power switch, and a second clock signal to drive a second driver for a second power switch during switching operations, and a resonant capacitor stabilizer configured to control the second driver to periodically activate the second power switch to discharge a resonant capacitor of a resonant network during initialization of the switching operations of the resonant converter.

Abstract: According to an implementation, a resonant converter for short-circuit protection includes an oscillator, a short-circuit detector configured to detect a short-circuit condition in a component of the resonant converter, and a pulse width modulation (PWM) controller configured to control the oscillator in a PWM mode before short-circuit protection is triggered. The oscillator, when in the PWM mode, is configured to generate a first clock signal for driving a first power switch and a second clock signal for driving a second power switch.

Abstract: A lighting circuit includes a light emitting diode (LED), a transistor that controls a current through the LED, and a lighting controller integrated circuit (IC) that controls the transistor to vary a brightness of the LED. The controller IC has a dimming pin that receives a dimming signal. The controller IC generates a low reference threshold and a high reference threshold that follow the dimming signal. The lighting controller IC controls the transistor by hysteretic control by comparing a sense signal indicative of the current through the LED to the low reference threshold and the high reference threshold.

Abstract: A lighting circuit includes a light emitting diode (LED), a transistor that controls a current through the LED, and a controller integrated circuit (IC) that controls the transistor to vary a brightness of the LED. The controller IC has a dimming pin that receives a hybrid dimming signal from a dimming input circuit. The dimming input circuit receives pulse width modulation (PWM) dimming signals and generates the hybrid dimming signal as a PWM dimming signal, an analog dimming signal, or both depending on the received PWM dimming signals.

Abstract: A reference voltage generator disclosed herein includes an amplifier including two input terminals connected to a dimming signal and a first node, respectively, and an output terminal, a first transistor including a gate connected to the output terminal of the amplifier and one electrode connected to the first node, second and third transistors configured to form a current mirror, and two resistors connected between one electrode of the second transistor and one electrode of the first transistor.

Abstract: A light emitting diode (LED) lighting circuit includes a ripple reducer. The ripple reducer includes a ripple detector, an adaptive offset generator, and a linear regulator. The ripple detector generates a ripple voltage that is indicative of a ripple current. The adaptive offset generator generates an adaptive offset voltage from the ripple voltage and from a voltage of a transistor. The linear regulator drives the transistor to regulate an LED current in accordance with a reference control voltage that is generated from the ripple voltage and the adaptive offset voltage.

Abstract: A charge pump includes: a first diode that is connected to a first node; a second diode that is connected to a second node; a pump capacitor that is connected to a third node to which the first diode and the second diode are connected; a power supply capacitor that is connected to the pump capacitor; a third diode that is connected between the pump capacitor and the power supply capacitor; and a zener diode that is connected in parallel to the third diode and the power supply capacitor. A power supply device decreases a ripple of an output current using a ripple reduction signal.

Abstract: A superjunction semiconductor device includes a first semiconductor layer doped with a first conductivity type; an active region formed on the first semiconductor layer, the active region including a drift layer; and a termination region disposed to surround the active region, the termination region including a lower edge region disposed on a side surface of the drift layer and an upper edge region disposed on the lower edge region, wherein the upper edge region includes a lower charge balance region disposed on the lower edge region, the lower charge balance region having a second conductivity type different from the first conductivity type, and an upper charge balance region disposed on the lower charge balance region, the upper charge balance region having the first conductivity type.