Abstract: In some aspects, the disclosure is directed to methods and systems for providing voltage regulation and transient suppression from a battery to an integrated circuit. A resistor between a source power supply and the integrated circuit may dissipate power and reduce the voltage at the integrated circuit's input, with current through the resistor under control of an internal regulator of the integrated circuit.

Abstract: A control system for a voltage regulation device is configured to determine a tap position of a tap changing mechanism of the voltage regulation device, the control system being configured to: determine an internal impedance of the voltage regulation device based on an initial tap position; determine a voltage of the internal impedance based on a measured load current; determine a voltage of the first winding based on the input voltage, the output voltage, and the voltage of the internal impedance; and determine the tap position based on the voltage of the first winding, N, and a voltage of a second winding, where N is an integer value that represents a count of turns on the second winding.

Abstract: A resonant core power supply includes a core with excitation, resonant, and load windings where the resonant winding is coupled to a tank circuit and a controller manipulates the phase, amplitude and waveform of an excitation signal applied to the excitation winding.

Abstract: An interface protection circuit and a device interface are disclosed. The interface protection circuit includes a capacitor and a transient voltage suppressor (TVS) transistor. A first end of the capacitor is connected to a connection port, a second end of the capacitor is connected to a first end of the TVS transistor and an interface chip, and a second end of the TVS transistor is grounded.

Abstract: In a linear regulator system, a pass element has a control terminal, an input terminal and an output terminal. The pass element is configured to provide an output voltage at the output terminal based on: an input voltage at the input terminal; and a control signal at the control terminal. A dropout error amplifier has an error output and first and second inputs. The first input is coupled to the output terminal, and the error output is coupled to the control terminal. The dropout error amplifier is configured to provide a dropout control signal at the error output based on a comparison between: the output voltage at the first input; and a dropout reference voltage at the second input. The pass element is configured to regulate the output voltage at the dropout reference voltage, responsive to the dropout control signal.

Abstract: There is provided a digital voltage regulator, which includes a first comparator, a circuit switching circuit, a voltage regulation control circuit, a first transistor array and a second transistor array; a width-to-length ratio of any one of transistors in the first transistor array is larger than that of any one of transistors in the second transistor array; the first comparator outputs a comparison result between a first reference voltage and an output voltage; the voltage regulation control circuit generates a voltage regulating signal according to the comparison result under control of a clock signal; the circuit switching circuit controls one of the first transistor array and the second transistor array according to a comparison result between the output voltage and a second reference voltage and a comparison result between the output voltage and a third reference voltage to regulate the output voltage based on the voltage regulating signal.

Abstract: This disclosure describes systems, methods, and apparatus for driving a plurality of output circuits from a DC input signal using a resonant converter, the resonant converter comprising a switch network, a resonant tank, and a rectifier network, the resonant tank comprising: a resonant capacitor bridge coupled across the switch network; a plurality of branches, each branch comprising at least one series inductor coupled at a first end to the resonant capacitor bridge and at a second end to the rectifier network; and at least one parallel inductor; the rectifier network comprising one or more groups of transformers, each group coupled to one branch of the plurality of branches, and wherein the primary windings of the transformers of each group are coupled in parallel, and wherein the secondary windings are configured for coupling to an output load.

Abstract: Reference voltage generation circuits and related methods are disclosed. An example reference voltage generation circuit includes a voltage generating circuit including an enhancement mode (E-mode) gallium nitride (GaN) transistor, the voltage generating circuit to, in response to a first clock signal having a first phase, generate a first voltage associated with the E-mode GaN transistor, and, in response to a second clock signal having a second phase different from the first phase, generate a second voltage associated with the E-mode GaN transistor, and a switching capacitor circuit coupled to the voltage generating circuit, the switching capacitor circuit to generate a reference voltage based on a difference between the first voltage and the second voltage.

Abstract: Disclosed is a semiconductor integrated circuit for a regulator, including: a voltage control transistor connected between a voltage input terminal to which a DC voltage is input and an output terminal; a control circuit that controls the voltage control transistor according to a feedback voltage of an output; a first transistor which is provided in parallel with the voltage control transistor and to which an electric current in a proportional reduction from an electric current flowing to the voltage control transistor flows; a first comparison circuit that determines which of the electric current flowing to the first transistor and a predetermined current value is larger; and a first output terminal for outputting the determination result. An output of the first comparison circuit is inverted in response to the flowing to the first transistor of the electric current smaller than a preset rotation lock detection current value.

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to adjust an operating mode of a power converter. An example apparatus includes a first transistor having a gate terminal, a first current terminal, and a second current terminal, the first current terminal to be coupled to a second transistor and an inductor of a power converter, a capacitor coupled to the second current terminal, a logic gate having a first logic gate input, a second logic gate input, and a logic gate output, the logic gate output coupled to the gate terminal, a comparator having a comparator input and a comparator output, the comparator input coupled to the capacitor and the second current terminal, a multiplexer coupled to the comparator output, a first flip-flop coupled to the multiplexer and the second logic gate input, and a second flip-flop coupled to the multiplexer and the first flip-flop.

Abstract: An adaptable LDO regulator includes an error amplifier providing an error voltage according to a difference between a feedback voltage and a reference voltage, first and second pass transistors each having a first current electrode for receiving an input voltage, a control electrode for receiving the error voltage, and a second current electrode, the second current electrode of the second pass transistor providing an output voltage, a voltage divider generating the feedback voltage in response to a voltage on an input thereof, and a mode selection network that in a closed loop mode, couples the second current electrodes of the first and second pass transistors together and to the input of the voltage divider, and in an open loop mode, couples the second current electrode of the first pass transistor to the input of the voltage divider and decouples the second current electrodes of the first and second pass transistors.

Abstract: A thin-film ESD protection device includes a semiconductor substrate including a low-resistivity portion at least adjacent to a first principal surface thereof; an insulating layer formed on the first principal surface; first and second input/output electrodes, and a ground electrode formed on a surface of the insulating layer. Moreover, a diode element and a capacitor element are formed adjacent to the first principal surface. The diode element is connected at a first end thereof to the first input/output electrode and connected at a second end thereof to the ground electrode. The capacitor element is connected at a third end thereof to the second input/output electrode and connected at a fourth end thereof to the ground electrode. The second end of the diode element and the fourth end of the capacitor element are connected by the low-resistivity portion of the semiconductor substrate to the ground electrode.

Abstract: An electronic device includes a first voltage conversion unit that divides an input voltage and outputs the divided voltage, a detection unit that detects the input voltage, and a control unit that controls the voltage division ratio of the first voltage conversion unit such that the output voltage of the first voltage conversion unit decreases as the input voltage increases.

Abstract: A zero current detection system for a switching regulator is provided. The switching includes an inductor. In the zero current detection system, a comparator has a positive input coupled to a terminal of the inductor and an output terminal for outputting a comparison result signal; a first signal latch circuit has a clock terminal for receiving the comparison result signal and outputting a latched output signal; a delay line module starts counting upon receipt of the latched output signal, and then outputs a zero current detection signal after counting a delay time; in response to the zero current detection signal, a voltage sampling module samples a node voltage at two different time points, to generate two sampling voltages; a delay control module adjusts the delay time of the delay line module according to the two sampling voltages.

Abstract: A power converter includes a network of switches having a first capacitor switch coupled to a first flying-capacitor, a first switch to couple a second flying-capacitor to a first port, an inductor coupled to a ground switch. A driver drives the network of switches in two states. In the first state the ground port is coupled to a second port via a first path comprising the first flying-capacitor and the inductor, and the first port is coupled to the second port via a second path comprising the first switch, the second flying-capacitor and the inductor. In the second state the ground is coupled to the second port via a third path comprising the ground switch and the inductor, and one of the first port and the ground port is coupled to the second port via a fourth path comprising the first flying-capacitor while bypassing the inductor.

Abstract: A power conversion device includes first to fourth switching elements, and first to eighth diodes. The first to fourth diodes are electrically connected in inverse parallel to the first to fourth switching elements, respectively. The seventh diode is electrically connected in parallel to the second diode. The eighth diode is electrically connected in parallel to the third diode. The second diode is housed in a first package. The seventh diode is housed in a second package, which is different from the first package, and which does not include the switching elements. The eighth diode is housed in the second package, or alternatively, the eighth diode is housed in another package, which is different from the first package and the second package, and which does not include the switching elements.

Abstract: Disclosed is a voltage converter capable of adaptively operating in one of a synchronous mode and an asynchronous mode according to an input voltage of an input terminal. The voltage converter includes: a voltage detector generating a detection result according to the input voltage; a switch control circuit generating a first switch control signal and a second switch control signal according to the detection result and an output voltage of an output terminal; a first switch intermittently turned on according to the first switch control signal in the synchronous and asynchronous modes; a second switch intermittently turned on/off according to the second switch control signal in the synchronous/asynchronous mode; and an energy storage circuit electrically connected to the input and output terminals to store and release energy according to the on-off states of the first and second switches.

Abstract: A power supply circuit in which an increase in a leakage current can be suppressed is provided. In a power supply circuit in which a main LDO unit outputs a first internal voltage during a normal operation and a sub LDO unit outputs a sleep voltage during a sleep operation, the sleep voltage is applied to a drain of a transistor, and an external voltage higher than the sleep voltage is applied to a gate and a back gate thereof.

Abstract: A green bridge circuit for adjusting a DC power source and an AC power source is provided. The green bridge circuit includes a bridge circuit and a bias adjustment circuit. The bridge circuit includes four transistors connected to a first power terminal, a system load, and a second power terminal. The bias adjustment circuit has an input terminal coupled to an output terminal of the bridge circuit and an output terminal coupled to control terminals of the transistors. The bias adjustment circuit changes bias voltages of the control terminals of the transistors according to a rectified voltage outputted by the bridge circuit. In this way, loss is reduced, heat generation is prevented, and transmission loss is addressed.

Abstract: A hysteresis voltage detection circuit includes a voltage stabilizing unit, a first power switch, a first voltage dividing resister, a second voltage dividing resister, a third voltage dividing resistor and a second power switch. The voltage stabilizing unit is coupled to an adjustable voltage source. When both the first power switch and the second power switch are turned on, the first voltage dividing resistor, the second voltage dividing resistor, and the third voltage dividing resistor divide the adjustable voltage source. When both the first power switch and the second power switch are turned off, the first voltage dividing resistor and the second voltage dividing resistor divide the adjustable voltage source.