Abstract: A control circuit providing an output voltage and including an N-type transistor, a first P-type transistor and a second P-type transistor is provided. The N-type transistor is coupled to a first power terminal. The first P-type transistor includes a first source, a first drain, a first gate and a first bulk. The first gate is coupled to a gate of the N-type transistor. The first bulk is coupled to the first source. The second P-type transistor includes a second source, a second drain, a second gate and a second bulk. The second source is coupled to a second power terminal. The second drain and the second bulk are coupled to the first bulk.

Abstract: A control circuit providing an output voltage and including an N-type transistor, a first P-type transistor and a second P-type transistor is provided. The N-type transistor is coupled to a first power terminal. The first P-type transistor includes a first source, a first drain, a first gate and a first bulk. The first gate is coupled to a gate of the N-type transistor. The first bulk is coupled to the first source. The second P-type transistor includes a second source, a second drain, a second gate and a second bulk. The second source is coupled to a second power terminal. The second drain and the second bulk are coupled to the first bulk.

Abstract: A delay circuit is provided. The delay circuit includes a voltage-generation circuit and a signal-generation circuit. The voltage-generation circuit receives an input signal and generates a first control voltage and a second control voltage. The signal-generation circuit is controlled by the first control voltage and a second control voltage to generate an output signal. A first delay time by which a falling edge of the output signal is delayed from a falling edge of the output signal is determined by the first control voltage. A second delay time by which a rising edge of the output signal is delayed from a rising edge of the output signal is determined by the second control voltage.

Abstract: A reversible buck or boost converter is operable in a buck mode and in a boost mode. In the buck mode, the converter receives a supply voltage via an input terminal and generates a charging current that is supplied to a battery, thereby charging the battery. The supply voltage is also supplied through the converter to an output terminal. In a boost mode, the converter receives power form the battery and generates a supply current and voltage that is output onto the output terminal. The same single current sense resistor is used both to control the charging current in the buck mode and to control a constant current supplied to the output terminal in the boost mode. The output current is controlled to be constant, regardless of changes in the in the battery voltage and changes in the output voltage.

Abstract: A switching regulator having fast start-up time and low standby power is disclosed. In an exemplary embodiment, an apparatus includes a transistor that generates a charging current at a first current level from a base current received at a base terminal. The apparatus also includes a capacitor that charges in response to the charging current at the first current level to generate a voltage signal that increases at a first rate. The apparatus also includes a charge pump having an output coupled to the base terminal. The charge pump outputs a charge pump current when the voltage signal exceeds a first voltage level. The base current is increased by charge pump current to cause the transistor to generate the charging current at a second current level, and the capacitor charges in response to the charging current at the second current level to generate the voltage signal that increases at a second rate.

Abstract: A switching regulator having fast start-up time and low standby power is disclosed. In an exemplary embodiment, an apparatus includes a transistor that generates a charging current at a first current level from a base current received at a base terminal. The apparatus also includes a capacitor that charges in response to the charging current at the first current level to generate a voltage signal that increases at a first rate. The apparatus also includes a charge pump having an output coupled to the base terminal. The charge pump outputs a charge pump current when the voltage signal exceeds a first voltage level. The base current is increased by charge pump current to cause the transistor to generate the charging current at a second current level, and the capacitor charges in response to the charging current at the second current level to generate the voltage signal that increases at a second rate.

Abstract: A reversible buck or boost converter is operable in a buck mode and in a boost mode. In the buck mode, the converter receives a supply voltage via an input terminal and generates a charging current that is supplied to a battery, thereby charging the battery. The supply voltage is also supplied through the converter to an output terminal. In a boost mode, the converter receives power form the battery and generates a supply current and voltage that is output onto the output terminal. The same single current sense resistor is used both to control the charging current in the buck mode and to control a constant current supplied to the output terminal in the boost mode. The output current is controlled to be constant, regardless of changes in the in the battery voltage and changes in the output voltage.

Abstract: A reversible buck or boost converter is operable in a buck mode and in a boost mode. In the buck mode, the converter receives a supply voltage via an input terminal and generates a charging current that is supplied to a battery, thereby charging the battery. The supply voltage is also supplied through the converter to an output terminal. In a boost mode, the converter receives power from the battery and generates a supply current and voltage that is output onto the output terminal. The same single current sense resistor is used both to control the charging current in the buck mode and to control a constant current supplied to the output terminal in the boost mode. The output current is controlled to be constant, regardless of changes in the in the battery voltage and changes in the output voltage.

Abstract: A reversible buck or boost converter is operable in a buck mode and in a boost mode. In the buck mode, the converter receives a supply voltage via an input terminal and generates a charging current that is supplied to a battery, thereby charging the battery. The supply voltage is also supplied through the converter to an output terminal. In a boost mode, the converter receives power from the battery and generates a supply current and voltage that is output onto the output terminal. The same single current sense resistor is used both to control the charging current in the buck mode and to control a constant current supplied to the output terminal in the boost mode. The output current is controlled to be constant, regardless of changes in the in the battery voltage and changes in the output voltage.

Abstract: A heat-dissipating module includes a plurality of cooling fins arranged radially, spaced apart from each other, and connected annularly in a manner that a hollow core is formed centrally in the heat-dissipating module. The cooling fins each bend at a preset position thereof and in a first direction, such that the cooling fins each include a first flap and a second flap. The first flap and the second flap together form a preset included angle therebetween.

Abstract: A heat-dissipating module includes a plurality of cooling fins arranged radially, spaced apart from each other, and connected annularly in a manner that a hollow core is formed centrally in the heat-dissipating module. The cooling fins each bend at a preset position thereof and in a first direction, such that the cooling fins each include a first flap and a second flap. The first flap and the second flap together form a preset included angle therebetween.

Abstract: An LED lamp includes at least an LED unit, a heat-dissipating module, a substrate, a power module, a base, and a thermally insulating panel. The heat-dissipating module includes a plurality of cooling fins arranged radially, spaced apart from each other, and connected annularly. The LED unit is disposed on and coupled to the substrate. The substrate is disposed above the heat-dissipating module. The base is a hollow casing for accommodating the power module and the thermally insulating panel, and is coupled to the heat-dissipating module. The thermally insulating panel is inserted into a groove disposed on an inner edge of the base and positioned between the heat-dissipating module and the power module. The thermally insulating panel is spaced apart from the heat-dissipating module by an air-filled gap of a preset distance to insulate the heat generated by the LED unit and further protect the power module.

Abstract: A multi-rail power-supply system provides power to circuitry requiring at least one additional rail between a high and a low-voltage rail. The system comprises a first power regulator that interconnects the high-voltage rail and an intermediate node and sets a first voltage rail that has a magnitude that is less than the high-voltage rail, wherein current that flows from the high-voltage rail is employed by a first set of peripheral circuitry prior to sinking through the first power regulator to the intermediate node. The system further comprises a second power regulator that interconnects the intermediate node and the low-voltage rail and sets a second voltage rail that has a magnitude that is greater than the low-voltage rail, wherein current that flows from the intermediate node is sourced by the second regulator and is employed by a second set of peripheral circuitry prior to flowing to the low-voltage rail.

Abstract: A switching regulator generally includes an output circuit, a comparator, an on-time timer and an error amplifier. The output circuit receives an input voltage and produces an output voltage. The comparator causes the output circuit to turn on the output voltage when a feedback voltage falls below a first reference voltage. The on-time timer causes the output circuit to turn off the output voltage after a time-out period. The error amplifier receives the feedback voltage and a second reference voltage and produces the first reference voltage.

Abstract: An amplifier is provided that includes an output portion that sources and sinks current associated with an output load and an amplification portion that is biased by a relatively small bias current with respect to an output current of the amplifier. The amplification portion provides an amplified output signal to the output portion. The amplifier further comprises at least one impedance component coupled between the output portion and the amplification portion to alter at least one pole associated with the amplifier to mitigate instability of the amplifier related to the relatively small bias current.

Abstract: One embodiment of the invention includes a switching power supply system. The system includes a switch network comprising at least one switch configured to provide an output voltage based on switching activity thereof. The system also includes a switching controller configured to control the switch network to maintain the output voltage provided at an output based on a feedback signal associated with the output voltage. A converter pulse detector is configured to detect an output voltage overshoot condition based on the switching activity of the switch network corresponding to a transition in an output load to which the output voltage is provided.

Abstract: Various apparatuses, methods and systems for protecting a driver from electrostatic discharge are disclosed herein. For example, some exemplary embodiments provide a driver, including a buffer, a leakage path blocking transistor connected to an output of the buffer, and an output driver connected to an output of the leakage path blocking transistor. Current from the output driver to the buffer is substantially blocked by the leakage path blocking transistor.

Abstract: Various apparatuses, methods and systems for protecting a driver from electrostatic discharge are disclosed herein. For example, some exemplary embodiments provide a driver, including a buffer, a leakage path blocking transistor connected to an output of the buffer, and an output driver connected to an output of the leakage path blocking transistor. Current from the output driver to the buffer is substantially blocked by the leakage path blocking transistor.

Abstract: A multi-rail power-supply system provides power to circuitry requiring at least one additional rail between a high and a low-voltage rail. The system comprises a first power regulator that interconnects the high-voltage rail and an intermediate node and sets a first voltage rail that has a magnitude that is less than the high-voltage rail, wherein current that flows from the high-voltage rail is employed by a first set of peripheral circuitry prior to sinking through the first power regulator to the intermediate node. The system further comprises a second power regulator that interconnects the intermediate node and the low-voltage rail and sets a second voltage rail that has a magnitude that is greater than the low-voltage rail, wherein current that flows from the intermediate node is sourced by the second regulator and is employed by a second set of peripheral circuitry prior to flowing to the low-voltage rail.

Abstract: An amplifier is provided that includes an output portion that sources and sinks current associated with an output load and an amplification portion that is biased by a relatively small bias current with respect to an output current of the amplifier. The amplification portion provides an amplified output signal to the output portion. The amplifier further comprises at least one impedance component coupled between the output portion and the amplification portion to alter at least one pole associated with the amplifier to mitigate instability of the amplifier related to the relatively small bias current.